libcli/auth: make use of netlogon_creds_cli_check_transport() in more places

This was somehow missing in commit
7a5ad9f64a

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15425

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Thu Nov  7 09:14:33 UTC 2024 on atb-devel-224

(cherry picked from commit f340dce654)

Autobuild-User(v4-20-test): Jule Anger <janger@samba.org>
Autobuild-Date(v4-20-test): Wed Nov 13 11:36:37 UTC 2024 on atb-devel-224

auth/credentials/pycredentials.c

@@ -1024,9 +1024,11 @@ static PyObject *py_creds_get_aes256_key(PyObject *self, PyObject *args)
 static PyObject *py_creds_encrypt_netr_crypt_password(PyObject *self,
 						      PyObject *args)
 {
-	DATA_BLOB data = data_blob_null;
 	struct cli_credentials    *creds  = NULL;
 	struct netr_CryptPassword *pwd    = NULL;
+	struct samr_CryptPassword spwd;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
 	NTSTATUS status;
 	PyObject *py_cp = Py_None;
 
@@ -1045,9 +1047,18 @@ static PyObject *py_creds_encrypt_netr_crypt_password(PyObject *self,
 		/* pytalloc_get_type sets TypeError */
 		return NULL;
 	}
-	data.length = sizeof(struct netr_CryptPassword);
-	data.data   = (uint8_t *)pwd;
-	status = netlogon_creds_session_encrypt(creds->netlogon_creds, data);
+
+	memcpy(spwd.data, pwd->data, 512);
+	PUSH_LE_U32(spwd.data, 512, pwd->length);
+
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds->netlogon_creds,
+							   &spwd,
+							   auth_type,
+							   auth_level);
+
+	memcpy(pwd->data, spwd.data, 512);
+	pwd->length = PULL_LE_U32(spwd.data, 512);
+	ZERO_STRUCT(spwd);
 
 	PyErr_NTSTATUS_IS_ERR_RAISE(status);
 
@@ -1096,6 +1107,68 @@ static PyObject *py_creds_encrypt_samr_password(PyObject *self,
 	Py_RETURN_NONE;
 }
 
+static PyObject *py_creds_encrypt_netr_PasswordInfo(PyObject *self,
+						    PyObject *args,
+						    PyObject *kwargs)
+{
+	const char * const kwnames[] = {
+		"info",
+		"auth_type",
+		"auth_level",
+		NULL
+	};
+	struct cli_credentials *creds = NULL;
+	PyObject *py_info = Py_None;
+	enum netr_LogonInfoClass level = NetlogonInteractiveInformation;
+	union netr_LogonLevel logon = { .password = NULL, };
+	uint8_t auth_type = DCERPC_AUTH_TYPE_NONE;
+	uint8_t auth_level = DCERPC_AUTH_LEVEL_NONE;
+	NTSTATUS status;
+	bool ok;
+
+	creds = PyCredentials_AsCliCredentials(self);
+	if (creds == NULL) {
+		PyErr_Format(PyExc_TypeError, "Credentials expected");
+		return NULL;
+	}
+
+	if (creds->netlogon_creds == NULL) {
+		PyErr_Format(PyExc_ValueError, "NetLogon credentials not set");
+		return NULL;
+	}
+
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "Obb",
+					 discard_const_p(char *, kwnames),
+					 &py_info, &auth_type, &auth_level))
+	{
+		return NULL;
+	}
+
+	ok = py_check_dcerpc_type(py_info,
+				  "samba.dcerpc.netlogon",
+				  "netr_PasswordInfo");
+	if (!ok) {
+		/* py_check_dcerpc_type sets TypeError */
+		return NULL;
+	}
+
+	logon.password = pytalloc_get_type(py_info, struct netr_PasswordInfo);
+	if (logon.password == NULL) {
+		/* pytalloc_get_type sets TypeError */
+		return NULL;
+	}
+
+	status = netlogon_creds_encrypt_samlogon_logon(creds->netlogon_creds,
+						       level,
+						       &logon,
+						       auth_type,
+						       auth_level);
+
+	PyErr_NTSTATUS_IS_ERR_RAISE(status);
+
+	Py_RETURN_NONE;
+}
+
 static PyObject *py_creds_get_smb_signing(PyObject *self, PyObject *unused)
 {
 	enum smb_signing_setting signing_state;
@@ -1611,6 +1684,17 @@ static PyMethodDef py_creds_methods[] = {
 			    "the negotiated encryption algorithm in place\n"
 			    "i.e. it overwrites the original data"
 	},
+	{
+		.ml_name  = "encrypt_netr_PasswordInfo",
+		.ml_meth  = PY_DISCARD_FUNC_SIG(PyCFunction,
+					py_creds_encrypt_netr_PasswordInfo),
+		.ml_flags = METH_VARARGS | METH_KEYWORDS,
+		.ml_doc   = "S.encrypt_netr_PasswordInfo(info, "
+			    "auth_type, auth_level) -> None\n"
+			    "Encrypt the supplied password info using the session key and\n"
+			    "the negotiated encryption algorithm in place\n"
+			    "i.e. it overwrites the original data"
+	},
 	{
 		.ml_name  = "get_smb_signing",
 		.ml_meth  = py_creds_get_smb_signing,

libcli/auth/credentials.c

@@ -290,7 +290,7 @@ static NTSTATUS netlogon_creds_step(struct netlogon_creds_CredentialState *creds
 /*
   DES encrypt a 8 byte LMSessionKey buffer using the Netlogon session key
 */
-NTSTATUS netlogon_creds_des_encrypt_LMKey(struct netlogon_creds_CredentialState *creds,
+static NTSTATUS netlogon_creds_des_encrypt_LMKey(struct netlogon_creds_CredentialState *creds,
 					  struct netr_LMSessionKey *key)
 {
 	int rc;
@@ -308,7 +308,7 @@ NTSTATUS netlogon_creds_des_encrypt_LMKey(struct netlogon_creds_CredentialState
 /*
   DES decrypt a 8 byte LMSessionKey buffer using the Netlogon session key
 */
-NTSTATUS netlogon_creds_des_decrypt_LMKey(struct netlogon_creds_CredentialState *creds,
+static NTSTATUS netlogon_creds_des_decrypt_LMKey(struct netlogon_creds_CredentialState *creds,
 					  struct netr_LMSessionKey *key)
 {
 	int rc;
@@ -473,6 +473,58 @@ NTSTATUS netlogon_creds_aes_decrypt(struct netlogon_creds_CredentialState *creds
 	return NT_STATUS_OK;
 }
 
+static struct netlogon_creds_CredentialState *
+netlogon_creds_alloc(TALLOC_CTX *mem_ctx,
+		     const char *client_account,
+		     const char *client_computer_name,
+		     uint16_t secure_channel_type,
+		     uint32_t client_requested_flags,
+		     const struct dom_sid *client_sid,
+		     uint32_t negotiate_flags)
+{
+	struct netlogon_creds_CredentialState *creds = NULL;
+	struct timeval tv = timeval_current();
+	NTTIME now = timeval_to_nttime(&tv);
+
+	creds = talloc_zero(mem_ctx, struct netlogon_creds_CredentialState);
+	if (creds == NULL) {
+		return NULL;
+	}
+
+	if (client_sid == NULL) {
+		creds->sequence = tv.tv_sec;
+	}
+	creds->negotiate_flags = negotiate_flags;
+	creds->secure_channel_type = secure_channel_type;
+
+	creds->computer_name = talloc_strdup(creds, client_computer_name);
+	if (!creds->computer_name) {
+		talloc_free(creds);
+		return NULL;
+	}
+	creds->account_name = talloc_strdup(creds, client_account);
+	if (!creds->account_name) {
+		talloc_free(creds);
+		return NULL;
+	}
+
+	creds->ex = talloc_zero(creds,
+			struct netlogon_creds_CredentialState_extra_info);
+	if (creds->ex == NULL) {
+		talloc_free(creds);
+		return NULL;
+	}
+	creds->ex->client_requested_flags = client_requested_flags;
+	creds->ex->auth_time = now;
+	if (client_sid != NULL) {
+		creds->ex->client_sid = *client_sid;
+	} else {
+		creds->ex->client_sid = global_sid_NULL;
+	}
+
+	return creds;
+}
+
 /*****************************************************************
 The above functions are common to the client and server interface
 next comes the client specific functions
@@ -491,30 +543,23 @@ struct netlogon_creds_CredentialState *netlogon_creds_client_init(TALLOC_CTX *me
 								  const struct netr_Credential *server_challenge,
 								  const struct samr_Password *machine_password,
 								  struct netr_Credential *initial_credential,
+								  uint32_t client_requested_flags,
 								  uint32_t negotiate_flags)
 {
-	struct netlogon_creds_CredentialState *creds = talloc_zero(mem_ctx, struct netlogon_creds_CredentialState);
+	struct netlogon_creds_CredentialState *creds = NULL;
 	NTSTATUS status;
 
+	creds = netlogon_creds_alloc(mem_ctx,
+				     client_account,
+				     client_computer_name,
+				     secure_channel_type,
+				     client_requested_flags,
+				     NULL, /* client_sid */
+				     negotiate_flags);
 	if (!creds) {
 		return NULL;
 	}
 
-	creds->sequence = time(NULL);
-	creds->negotiate_flags = negotiate_flags;
-	creds->secure_channel_type = secure_channel_type;
-
-	creds->computer_name = talloc_strdup(creds, client_computer_name);
-	if (!creds->computer_name) {
-		talloc_free(creds);
-		return NULL;
-	}
-	creds->account_name = talloc_strdup(creds, client_account);
-	if (!creds->account_name) {
-		talloc_free(creds);
-		return NULL;
-	}
-
 	dump_data_pw("Client chall", client_challenge->data, sizeof(client_challenge->data));
 	dump_data_pw("Server chall", server_challenge->data, sizeof(server_challenge->data));
 	dump_data_pw("Machine Pass", machine_password->hash, sizeof(machine_password->hash));
@@ -563,25 +608,6 @@ struct netlogon_creds_CredentialState *netlogon_creds_client_init(TALLOC_CTX *me
 	return creds;
 }
 
-/*
-  initialise the credentials structure with only a session key.  The caller better know what they are doing!
- */
-
-struct netlogon_creds_CredentialState *netlogon_creds_client_init_session_key(TALLOC_CTX *mem_ctx,
-									      const uint8_t session_key[16])
-{
-	struct netlogon_creds_CredentialState *creds;
-
-	creds = talloc_zero(mem_ctx, struct netlogon_creds_CredentialState);
-	if (!creds) {
-		return NULL;
-	}
-
-	memcpy(creds->session_key, session_key, 16);
-
-	return creds;
-}
-
 /*
   step the credentials to the next element in the chain, updating the
   current client and server credentials and the seed
@@ -631,14 +657,34 @@ netlogon_creds_client_authenticator(struct netlogon_creds_CredentialState *creds
 /*
   check that a credentials reply from a server is correct
 */
-bool netlogon_creds_client_check(struct netlogon_creds_CredentialState *creds,
-			const struct netr_Credential *received_credentials)
+NTSTATUS netlogon_creds_client_verify(struct netlogon_creds_CredentialState *creds,
+			const struct netr_Credential *received_credentials,
+			enum dcerpc_AuthType auth_type,
+			enum dcerpc_AuthLevel auth_level)
 {
 	if (!received_credentials ||
 	    !mem_equal_const_time(received_credentials->data, creds->server.data, 8)) {
 		DEBUG(2,("credentials check failed\n"));
+		return NT_STATUS_ACCESS_DENIED;
+	}
+	return NT_STATUS_OK;
+}
+
+bool netlogon_creds_client_check(struct netlogon_creds_CredentialState *creds,
+			const struct netr_Credential *received_credentials)
+{
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+	NTSTATUS status;
+
+	status = netlogon_creds_client_verify(creds,
+					      received_credentials,
+					      auth_type,
+					      auth_level);
+	if (!NT_STATUS_IS_OK(status)) {
 		return false;
 	}
+
 	return true;
 }
 
@@ -676,20 +722,25 @@ struct netlogon_creds_CredentialState *netlogon_creds_server_init(TALLOC_CTX *me
 								  const struct samr_Password *machine_password,
 								  const struct netr_Credential *credentials_in,
 								  struct netr_Credential *credentials_out,
+								  uint32_t client_requested_flags,
+								  const struct dom_sid *client_sid,
 								  uint32_t negotiate_flags)
 {
-
-	struct netlogon_creds_CredentialState *creds = talloc_zero(mem_ctx, struct netlogon_creds_CredentialState);
+	struct netlogon_creds_CredentialState *creds = NULL;
 	NTSTATUS status;
 	bool ok;
 
+	creds = netlogon_creds_alloc(mem_ctx,
+				     client_account,
+				     client_computer_name,
+				     secure_channel_type,
+				     client_requested_flags,
+				     client_sid,
+				     negotiate_flags);
 	if (!creds) {
 		return NULL;
 	}
 
-	creds->negotiate_flags = negotiate_flags;
-	creds->secure_channel_type = secure_channel_type;
-
 	dump_data_pw("Client chall", client_challenge->data, sizeof(client_challenge->data));
 	dump_data_pw("Server chall", server_challenge->data, sizeof(server_challenge->data));
 	dump_data_pw("Machine Pass", machine_password->hash, sizeof(machine_password->hash));
@@ -708,17 +759,6 @@ struct netlogon_creds_CredentialState *netlogon_creds_server_init(TALLOC_CTX *me
 		return NULL;
 	}
 
-	creds->computer_name = talloc_strdup(creds, client_computer_name);
-	if (!creds->computer_name) {
-		talloc_free(creds);
-		return NULL;
-	}
-	creds->account_name = talloc_strdup(creds, client_account);
-	if (!creds->account_name) {
-		talloc_free(creds);
-		return NULL;
-	}
-
 	if (negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
 		status = netlogon_creds_init_hmac_sha256(creds,
 							 client_challenge,
@@ -778,7 +818,9 @@ struct netlogon_creds_CredentialState *netlogon_creds_server_init(TALLOC_CTX *me
 
 NTSTATUS netlogon_creds_server_step_check(struct netlogon_creds_CredentialState *creds,
 				 const struct netr_Authenticator *received_authenticator,
-				 struct netr_Authenticator *return_authenticator)
+				 struct netr_Authenticator *return_authenticator,
+				 enum dcerpc_AuthType auth_type,
+				 enum dcerpc_AuthLevel auth_level)
 {
 	NTSTATUS status;
 
@@ -810,6 +852,8 @@ NTSTATUS netlogon_creds_server_step_check(struct netlogon_creds_CredentialState
 static NTSTATUS netlogon_creds_crypt_samlogon_validation(struct netlogon_creds_CredentialState *creds,
 							 uint16_t validation_level,
 							 union netr_Validation *validation,
+							 enum dcerpc_AuthType auth_type,
+							 enum dcerpc_AuthLevel auth_level,
 							 bool do_encrypt)
 {
 	struct netr_SamBaseInfo *base = NULL;
@@ -925,27 +969,37 @@ static NTSTATUS netlogon_creds_crypt_samlogon_validation(struct netlogon_creds_C
 
 NTSTATUS netlogon_creds_decrypt_samlogon_validation(struct netlogon_creds_CredentialState *creds,
 						    uint16_t validation_level,
-						    union netr_Validation *validation)
+						    union netr_Validation *validation,
+						    enum dcerpc_AuthType auth_type,
+						    enum dcerpc_AuthLevel auth_level)
 {
 	return netlogon_creds_crypt_samlogon_validation(creds,
 							validation_level,
 							validation,
+							auth_type,
+							auth_level,
 							false);
 }
 
 NTSTATUS netlogon_creds_encrypt_samlogon_validation(struct netlogon_creds_CredentialState *creds,
 						    uint16_t validation_level,
-						    union netr_Validation *validation)
+						    union netr_Validation *validation,
+						    enum dcerpc_AuthType auth_type,
+						    enum dcerpc_AuthLevel auth_level)
 {
 	return netlogon_creds_crypt_samlogon_validation(creds,
 							validation_level,
 							validation,
+							auth_type,
+							auth_level,
 							true);
 }
 
 static NTSTATUS netlogon_creds_crypt_samlogon_logon(struct netlogon_creds_CredentialState *creds,
 						    enum netr_LogonInfoClass level,
 						    union netr_LogonLevel *logon,
+						    enum dcerpc_AuthType auth_type,
+						    enum dcerpc_AuthLevel auth_level,
 						    bool do_encrypt)
 {
 	NTSTATUS status;
@@ -1082,6 +1136,7 @@ static NTSTATUS netlogon_creds_crypt_samlogon_logon(struct netlogon_creds_Creden
 			}
 		} else {
 			/* Using DES to verify kerberos tickets makes no sense */
+			return NT_STATUS_INVALID_PARAMETER;
 		}
 		break;
 	}
@@ -1091,16 +1146,178 @@ static NTSTATUS netlogon_creds_crypt_samlogon_logon(struct netlogon_creds_Creden
 
 NTSTATUS netlogon_creds_decrypt_samlogon_logon(struct netlogon_creds_CredentialState *creds,
 					       enum netr_LogonInfoClass level,
-					       union netr_LogonLevel *logon)
+					       union netr_LogonLevel *logon,
+					       enum dcerpc_AuthType auth_type,
+					       enum dcerpc_AuthLevel auth_level)
 {
-	return netlogon_creds_crypt_samlogon_logon(creds, level, logon, false);
+	return netlogon_creds_crypt_samlogon_logon(creds,
+						   level,
+						   logon,
+						   auth_type,
+						   auth_level,
+						   false);
 }
 
 NTSTATUS netlogon_creds_encrypt_samlogon_logon(struct netlogon_creds_CredentialState *creds,
 					       enum netr_LogonInfoClass level,
-					       union netr_LogonLevel *logon)
+					       union netr_LogonLevel *logon,
+					       enum dcerpc_AuthType auth_type,
+					       enum dcerpc_AuthLevel auth_level)
 {
-	return netlogon_creds_crypt_samlogon_logon(creds, level, logon, true);
+	return netlogon_creds_crypt_samlogon_logon(creds,
+						   level,
+						   logon,
+						   auth_type,
+						   auth_level,
+						   true);
+}
+
+static NTSTATUS netlogon_creds_crypt_samr_Password(
+		struct netlogon_creds_CredentialState *creds,
+		struct samr_Password *pass,
+		enum dcerpc_AuthType auth_type,
+		enum dcerpc_AuthLevel auth_level,
+		bool do_encrypt)
+{
+	if (all_zero(pass->hash, ARRAY_SIZE(pass->hash))) {
+		return NT_STATUS_OK;
+	}
+
+	/*
+	 * Even with NETLOGON_NEG_SUPPORTS_AES or
+	 * NETLOGON_NEG_ARCFOUR this uses DES
+	 */
+
+	if (do_encrypt) {
+		return netlogon_creds_des_encrypt(creds, pass);
+	}
+
+	return netlogon_creds_des_decrypt(creds, pass);
+}
+
+NTSTATUS netlogon_creds_decrypt_samr_Password(struct netlogon_creds_CredentialState *creds,
+					      struct samr_Password *pass,
+					      enum dcerpc_AuthType auth_type,
+					      enum dcerpc_AuthLevel auth_level)
+{
+	return netlogon_creds_crypt_samr_Password(creds,
+						  pass,
+						  auth_type,
+						  auth_level,
+						  false);
+}
+
+NTSTATUS netlogon_creds_encrypt_samr_Password(struct netlogon_creds_CredentialState *creds,
+					      struct samr_Password *pass,
+					      enum dcerpc_AuthType auth_type,
+					      enum dcerpc_AuthLevel auth_level)
+{
+	return netlogon_creds_crypt_samr_Password(creds,
+						  pass,
+						  auth_type,
+						  auth_level,
+						  true);
+}
+
+static NTSTATUS netlogon_creds_crypt_samr_CryptPassword(
+		struct netlogon_creds_CredentialState *creds,
+		struct samr_CryptPassword *pass,
+		enum dcerpc_AuthType auth_type,
+		enum dcerpc_AuthLevel auth_level,
+		bool do_encrypt)
+{
+	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
+		if (do_encrypt) {
+			return netlogon_creds_aes_encrypt(creds,
+							  pass->data,
+							  ARRAY_SIZE(pass->data));
+		}
+
+		return netlogon_creds_aes_decrypt(creds,
+						  pass->data,
+						  ARRAY_SIZE(pass->data));
+	}
+
+	return netlogon_creds_arcfour_crypt(creds,
+					    pass->data,
+					    ARRAY_SIZE(pass->data));
+}
+
+NTSTATUS netlogon_creds_decrypt_samr_CryptPassword(struct netlogon_creds_CredentialState *creds,
+						   struct samr_CryptPassword *pass,
+						   enum dcerpc_AuthType auth_type,
+						   enum dcerpc_AuthLevel auth_level)
+{
+	return netlogon_creds_crypt_samr_CryptPassword(creds,
+						       pass,
+						       auth_type,
+						       auth_level,
+						       false);
+}
+
+NTSTATUS netlogon_creds_encrypt_samr_CryptPassword(struct netlogon_creds_CredentialState *creds,
+						   struct samr_CryptPassword *pass,
+						   enum dcerpc_AuthType auth_type,
+						   enum dcerpc_AuthLevel auth_level)
+{
+	return netlogon_creds_crypt_samr_CryptPassword(creds,
+						       pass,
+						       auth_type,
+						       auth_level,
+						       true);
+}
+
+static NTSTATUS netlogon_creds_crypt_SendToSam(
+		struct netlogon_creds_CredentialState *creds,
+		uint8_t *opaque_data,
+		size_t opaque_length,
+		enum dcerpc_AuthType auth_type,
+		enum dcerpc_AuthLevel auth_level,
+		bool do_encrypt)
+{
+	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
+		if (do_encrypt) {
+			return netlogon_creds_aes_encrypt(creds,
+							  opaque_data,
+							  opaque_length);
+		}
+
+		return netlogon_creds_aes_decrypt(creds,
+						  opaque_data,
+						  opaque_length);
+	}
+
+	return netlogon_creds_arcfour_crypt(creds,
+					    opaque_data,
+					    opaque_length);
+}
+
+NTSTATUS netlogon_creds_decrypt_SendToSam(struct netlogon_creds_CredentialState *creds,
+					  uint8_t *opaque_data,
+					  size_t opaque_length,
+					  enum dcerpc_AuthType auth_type,
+					  enum dcerpc_AuthLevel auth_level)
+{
+	return netlogon_creds_crypt_SendToSam(creds,
+					      opaque_data,
+					      opaque_length,
+					      auth_type,
+					      auth_level,
+					      false);
+}
+
+NTSTATUS netlogon_creds_encrypt_SendToSam(struct netlogon_creds_CredentialState *creds,
+					  uint8_t *opaque_data,
+					  size_t opaque_length,
+					  enum dcerpc_AuthType auth_type,
+					  enum dcerpc_AuthLevel auth_level)
+{
+	return netlogon_creds_crypt_SendToSam(creds,
+					      opaque_data,
+					      opaque_length,
+					      auth_type,
+					      auth_level,
+					      true);
 }
 
 union netr_LogonLevel *netlogon_creds_shallow_copy_logon(TALLOC_CTX *mem_ctx,
@@ -1190,9 +1407,7 @@ struct netlogon_creds_CredentialState *netlogon_creds_copy(
 		return NULL;
 	}
 
-	creds->sequence			= creds_in->sequence;
-	creds->negotiate_flags		= creds_in->negotiate_flags;
-	creds->secure_channel_type	= creds_in->secure_channel_type;
+	*creds = *creds_in;
 
 	creds->computer_name = talloc_strdup(creds, creds_in->computer_name);
 	if (!creds->computer_name) {
@@ -1205,18 +1420,15 @@ struct netlogon_creds_CredentialState *netlogon_creds_copy(
 		return NULL;
 	}
 
-	if (creds_in->sid) {
-		creds->sid = dom_sid_dup(creds, creds_in->sid);
-		if (!creds->sid) {
+	if (creds_in->ex != NULL) {
+		creds->ex = talloc_zero(creds,
+			struct netlogon_creds_CredentialState_extra_info);
+		if (creds->ex == NULL) {
 			talloc_free(creds);
 			return NULL;
 		}
+		*creds->ex = *creds_in->ex;
 	}
 
-	memcpy(creds->session_key, creds_in->session_key, sizeof(creds->session_key));
-	memcpy(creds->seed.data, creds_in->seed.data, sizeof(creds->seed.data));
-	memcpy(creds->client.data, creds_in->client.data, sizeof(creds->client.data));
-	memcpy(creds->server.data, creds_in->server.data, sizeof(creds->server.data));
-
 	return creds;
 }

libcli/auth/libcli_auth.h

@@ -17,6 +17,7 @@
 #ifndef __LIBCLI_AUTH_H__
 #define __LIBCLI_AUTH_H__
 
+#include "librpc/gen_ndr/dcerpc.h"
 #include "librpc/gen_ndr/netlogon.h"
 #include "librpc/gen_ndr/wkssvc.h"
 #include "librpc/gen_ndr/schannel.h"

libcli/auth/proto.h

@@ -16,10 +16,6 @@
 bool netlogon_creds_is_random_challenge(const struct netr_Credential *challenge);
 void netlogon_creds_random_challenge(struct netr_Credential *challenge);
 
-NTSTATUS netlogon_creds_des_encrypt_LMKey(struct netlogon_creds_CredentialState *creds,
-					  struct netr_LMSessionKey *key);
-NTSTATUS netlogon_creds_des_decrypt_LMKey(struct netlogon_creds_CredentialState *creds,
-					  struct netr_LMSessionKey *key);
 NTSTATUS netlogon_creds_des_encrypt(struct netlogon_creds_CredentialState *creds,
 				    struct samr_Password *pass);
 NTSTATUS netlogon_creds_des_decrypt(struct netlogon_creds_CredentialState *creds,
@@ -46,12 +42,15 @@ struct netlogon_creds_CredentialState *netlogon_creds_client_init(TALLOC_CTX *me
 								  const struct netr_Credential *server_challenge,
 								  const struct samr_Password *machine_password,
 								  struct netr_Credential *initial_credential,
+								  uint32_t client_requested_flags,
 								  uint32_t negotiate_flags);
-struct netlogon_creds_CredentialState *netlogon_creds_client_init_session_key(TALLOC_CTX *mem_ctx,
-									      const uint8_t session_key[16]);
 NTSTATUS
 netlogon_creds_client_authenticator(struct netlogon_creds_CredentialState *creds,
 				    struct netr_Authenticator *next);
+NTSTATUS netlogon_creds_client_verify(struct netlogon_creds_CredentialState *creds,
+			const struct netr_Credential *received_credentials,
+			enum dcerpc_AuthType auth_type,
+			enum dcerpc_AuthLevel auth_level);
 bool netlogon_creds_client_check(struct netlogon_creds_CredentialState *creds,
 			const struct netr_Credential *received_credentials);
 struct netlogon_creds_CredentialState *netlogon_creds_copy(
@@ -71,22 +70,60 @@ struct netlogon_creds_CredentialState *netlogon_creds_server_init(TALLOC_CTX *me
 								  const struct samr_Password *machine_password,
 								  const struct netr_Credential *credentials_in,
 								  struct netr_Credential *credentials_out,
+								  uint32_t client_requested_flags,
+								  const struct dom_sid *client_sid,
 								  uint32_t negotiate_flags);
 NTSTATUS netlogon_creds_server_step_check(struct netlogon_creds_CredentialState *creds,
 				 const struct netr_Authenticator *received_authenticator,
-				 struct netr_Authenticator *return_authenticator) ;
+				 struct netr_Authenticator *return_authenticator,
+				 enum dcerpc_AuthType auth_type,
+				 enum dcerpc_AuthLevel auth_level);
 NTSTATUS netlogon_creds_decrypt_samlogon_validation(struct netlogon_creds_CredentialState *creds,
 						    uint16_t validation_level,
-						    union netr_Validation *validation);
+						    union netr_Validation *validation,
+						    enum dcerpc_AuthType auth_type,
+						    enum dcerpc_AuthLevel auth_level);
 NTSTATUS netlogon_creds_encrypt_samlogon_validation(struct netlogon_creds_CredentialState *creds,
 						    uint16_t validation_level,
-						    union netr_Validation *validation);
+						    union netr_Validation *validation,
+						    enum dcerpc_AuthType auth_type,
+						    enum dcerpc_AuthLevel auth_level);
 NTSTATUS netlogon_creds_decrypt_samlogon_logon(struct netlogon_creds_CredentialState *creds,
 					       enum netr_LogonInfoClass level,
-					       union netr_LogonLevel *logon);
+					       union netr_LogonLevel *logon,
+					       enum dcerpc_AuthType auth_type,
+					       enum dcerpc_AuthLevel auth_level);
 NTSTATUS netlogon_creds_encrypt_samlogon_logon(struct netlogon_creds_CredentialState *creds,
 					       enum netr_LogonInfoClass level,
-					       union netr_LogonLevel *logon);
+					       union netr_LogonLevel *logon,
+					       enum dcerpc_AuthType auth_type,
+					       enum dcerpc_AuthLevel auth_level);
+NTSTATUS netlogon_creds_decrypt_samr_Password(struct netlogon_creds_CredentialState *creds,
+					      struct samr_Password *pass,
+					      enum dcerpc_AuthType auth_type,
+					      enum dcerpc_AuthLevel auth_level);
+NTSTATUS netlogon_creds_encrypt_samr_Password(struct netlogon_creds_CredentialState *creds,
+					      struct samr_Password *pass,
+					      enum dcerpc_AuthType auth_type,
+					      enum dcerpc_AuthLevel auth_level);
+NTSTATUS netlogon_creds_decrypt_samr_CryptPassword(struct netlogon_creds_CredentialState *creds,
+						   struct samr_CryptPassword *pass,
+						   enum dcerpc_AuthType auth_type,
+						   enum dcerpc_AuthLevel auth_level);
+NTSTATUS netlogon_creds_encrypt_samr_CryptPassword(struct netlogon_creds_CredentialState *creds,
+						   struct samr_CryptPassword *pass,
+						   enum dcerpc_AuthType auth_type,
+						   enum dcerpc_AuthLevel auth_level);
+NTSTATUS netlogon_creds_decrypt_SendToSam(struct netlogon_creds_CredentialState *creds,
+					  uint8_t *opaque_data,
+					  size_t opaque_length,
+					  enum dcerpc_AuthType auth_type,
+					  enum dcerpc_AuthLevel auth_level);
+NTSTATUS netlogon_creds_encrypt_SendToSam(struct netlogon_creds_CredentialState *creds,
+					  uint8_t *opaque_data,
+					  size_t opaque_length,
+					  enum dcerpc_AuthType auth_type,
+					  enum dcerpc_AuthLevel auth_level);
 union netr_LogonLevel *netlogon_creds_shallow_copy_logon(TALLOC_CTX *mem_ctx,
 					enum netr_LogonInfoClass level,
 					const union netr_LogonLevel *in);

libcli/auth/schannel_state.h

@@ -37,6 +37,8 @@ NTSTATUS schannel_check_creds_state(TALLOC_CTX *mem_ctx,
 				    const char *computer_name,
 				    struct netr_Authenticator *received_authenticator,
 				    struct netr_Authenticator *return_authenticator,
+				    enum dcerpc_AuthType auth_type,
+				    enum dcerpc_AuthLevel auth_level,
 				    struct netlogon_creds_CredentialState **creds_out);
 
 NTSTATUS schannel_get_challenge(struct loadparm_context *lp_ctx,

libcli/auth/schannel_state_tdb.c

@@ -88,6 +88,10 @@ NTSTATUS schannel_store_session_key_tdb(struct db_context *db_sc,
 	char *name_upper;
 	NTSTATUS status;
 
+	if (creds->ex == NULL) {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
 	if (strlen(creds->computer_name) > 15) {
 		/*
 		 * We may want to check for a completely
@@ -195,6 +199,11 @@ NTSTATUS schannel_fetch_session_key_tdb(struct db_context *db_sc,
 		NDR_PRINT_DEBUG(netlogon_creds_CredentialState, creds);
 	}
 
+	if (creds->ex == NULL) {
+		status = NT_STATUS_INTERNAL_ERROR;
+		goto done;
+	}
+
 	DEBUG(3,("schannel_fetch_session_key_tdb: restored schannel info key %s\n",
 		keystr));
 
@@ -560,6 +569,8 @@ NTSTATUS schannel_check_creds_state(TALLOC_CTX *mem_ctx,
 				    const char *computer_name,
 				    struct netr_Authenticator *received_authenticator,
 				    struct netr_Authenticator *return_authenticator,
+				    enum dcerpc_AuthType auth_type,
+				    enum dcerpc_AuthLevel auth_level,
 				    struct netlogon_creds_CredentialState **creds_out)
 {
 	TALLOC_CTX *tmpctx;
@@ -619,7 +630,9 @@ NTSTATUS schannel_check_creds_state(TALLOC_CTX *mem_ctx,
 
 	status = netlogon_creds_server_step_check(creds,
 						  received_authenticator,
-						  return_authenticator);
+						  return_authenticator,
+						  auth_type,
+						  auth_level);
 	if (!NT_STATUS_IS_OK(status)) {
 		goto done;
 	}

librpc/idl/netlogon.idl

@@ -1036,7 +1036,8 @@ interface netlogon
 		NETLOGON_NEG_SUPPORTS_AES_SHA2		= 0x00400000,
 		NETLOGON_NEG_SUPPORTS_AES		= 0x01000000,
 		NETLOGON_NEG_AUTHENTICATED_RPC_LSASS	= 0x20000000,
-		NETLOGON_NEG_AUTHENTICATED_RPC		= 0x40000000
+		NETLOGON_NEG_AUTHENTICATED_RPC		= 0x40000000,
+		NETLOGON_NEG_SUPPORTS_KERBEROS_AUTH	= 0x80000000
 	} netr_NegotiateFlags;
 
 	const uint32 NETLOGON_NEG_128BIT = NETLOGON_NEG_STRONG_KEYS;
@@ -1236,7 +1237,7 @@ interface netlogon
 	/* Function 0x15 */
 	typedef [switch_type(uint32)] union {
 		[case(1)] netr_NegotiateFlags server_capabilities;
-		[case(2)] netr_NegotiateFlags server_capabilities;
+		[case(2)] netr_NegotiateFlags requested_flags;
 	} netr_Capabilities;
 
 	NTSTATUS netr_LogonGetCapabilities(
@@ -1885,4 +1886,32 @@ interface netlogon
 		[in] uint32 dns_ttl,
 		[in,out,ref] NL_DNS_NAME_INFO_ARRAY *dns_names
 		);
+
+	[todo] void netr_Opnum49NotUsedOnWire(void);
+	[todo] void netr_Opnum50NotUsedOnWire(void);
+	[todo] void netr_Opnum51NotUsedOnWire(void);
+	[todo] void netr_Opnum52NotUsedOnWire(void);
+	[todo] void netr_Opnum53NotUsedOnWire(void);
+
+	/**********************/
+	/* Function 0x36 (54) */
+	/* from wireshark:    */
+	/* This is documented as 49 (0x31) but it's 54) */
+	[todo] NTSTATUS netr_ChainSetClientAttributes();
+
+	[todo] void netr_Opnum55NotUsedOnWire(void);
+	[todo] void netr_Opnum56NotUsedOnWire(void);
+	[todo] void netr_Opnum57NotUsedOnWire(void);
+	[todo] void netr_Opnum58NotUsedOnWire(void);
+
+	/*****************/
+	/* Function 0x3b (59) */
+	[public] NTSTATUS netr_ServerAuthenticateKerberos(
+		[in,unique]  [string,charset(UTF16)] uint16 *server_name,
+		[in]         [string,charset(UTF16)] uint16 *account_name,
+		[in]         netr_SchannelType account_type,
+		[in]         [string,charset(UTF16)] uint16 *computer_name,
+		[in,out,ref] netr_NegotiateFlags *negotiate_flags,
+		[out,ref]    uint32 *rid
+		);
 }

librpc/idl/schannel.idl

@@ -14,6 +14,77 @@ interface schannel
 {
 	/* this structure is used internally in the NETLOGON server */
 
+	typedef [flag(NDR_PAHEX)] struct {
+		/*
+		 * These were only used on the server part
+		 * with a single dom_sid for the client_sid.
+		 *
+		 * On the server we use CLEAR_IF_FIRST,
+		 * so db layout changes don't matter there,
+		 * but on the client side we need to handle
+		 * the ctdb case were CLEAR_IF_FIRST only
+		 * works if all cluster nodes are restarted.
+		 *
+		 * As this was a single dom_sid before,
+		 * we add some magic in order to let
+		 * old code (on other nodes to parse the new layout).
+		 *
+		 * We have basically this definition of dom_sid:
+		 *
+		 * typedef struct {
+		 *    uint8 sid_rev_num;
+		 *    [range(0,15)] int8 num_auths;
+		 *    uint8  id_auth[6];
+		 *    uint32 sub_auths[num_auths];
+		 * } dom_sid;
+		 *
+		 * It means it consumes at least 8 bytes while
+		 * and it's also 4 byte aligned (before sid_rev_num).
+		 * The largest sid would have 68 bytes.
+		 *
+		 * The old client side code would see a sid like
+		 * this: S-1-RSV-CRF-ATL-ATH-257-0-RID
+		 *
+		 * RSV => reserved (the last 4 bytes of id_auth)
+		 *
+		 * CRF => client_requested_flags (sub_auths[0]
+		 *
+		 * Note NTTIME used ndr_pull_udlong, it's not NTTIME_hyper!
+		 * ATL => low 4 bytes of auth_time (sub_auths[1])
+		 * ATH => high 4 bytes of auth_time (sub_auths[2])
+		 *
+		 * From client_sid (S-1-0-RID): sub_auth[3-5]
+		 *
+		 * 257 => 0x01 0x01 0x00 0x00 =
+		 *        (sid_rev_num = 1, num_auths =1,
+		 *         id_auth[0] = 0, id_auth[1] = 0)
+		 * 0   => id_auth[2-6]
+		 *
+		 * RID => the RID of the client
+		 *
+		 * It means the magic needs to simulate
+		 * num_auths = 6
+		 */
+		[value(0x00000601)] uint32 magic;
+		[value(0)] uint32 reserved;
+		netr_NegotiateFlags client_requested_flags;
+		NTTIME auth_time;
+		dom_sid client_sid;
+	} netlogon_creds_CredentialState_extra_info;
+
+	typedef [public,flag(NDR_PAHEX)] struct {
+		netr_NegotiateFlags negotiate_flags;
+		uint8 session_key[16];
+		uint32 sequence;
+		netr_Credential seed;
+		netr_Credential client;
+		netr_Credential server;
+		netr_SchannelType secure_channel_type;
+		[string,charset(UTF8)] uint8 computer_name[];
+		[string,charset(UTF8)] uint8 account_name[];
+		netlogon_creds_CredentialState_extra_info *ex;
+	} netlogon_creds_CredentialState;
+
 	typedef [public,flag(NDR_PAHEX)] struct {
 		netr_NegotiateFlags negotiate_flags;
 		uint8 session_key[16];
@@ -25,7 +96,7 @@ interface schannel
 		[string,charset(UTF8)] uint8 computer_name[];
 		[string,charset(UTF8)] uint8 account_name[];
 		dom_sid *sid;
-	} netlogon_creds_CredentialState;
+	} netlogon_creds_CredentialState_legacy;
 
 	/* This is used in the schannel_store.tdb */
 	typedef [public] struct {

librpc/rpc/dcesrv_core.h

@@ -578,6 +578,14 @@ NTSTATUS dcesrv_transport_session_key(struct dcesrv_call_state *call,
 	return; \
 } while(0)
 
+#define DCESRV_NOT_USED_ON_WIRE(__opname) \
+static void dcesrv_## __opname(struct dcesrv_call_state *dce_call,\
+			       TALLOC_CTX *mem_ctx, \
+			       struct __opname *r) \
+{ \
+        DCESRV_FAULT_VOID(DCERPC_FAULT_OP_RNG_ERROR); \
+}
+
 /* a useful macro for checking the validity of a dcerpc policy handle
    and giving the right fault code if invalid */
 #define DCESRV_CHECK_HANDLE(h) do {if (!(h)) DCESRV_FAULT(DCERPC_FAULT_CONTEXT_MISMATCH); } while (0)

librpc/rpc/server/netlogon/schannel_util.c

@@ -70,7 +70,7 @@ static NTSTATUS dcesrv_netr_check_schannel_get_state(struct dcesrv_call_state *d
 			DCESRV_NETR_CHECK_SCHANNEL_STATE_MAGIC,
 			struct dcesrv_netr_check_schannel_state);
 	if (s != NULL) {
-		if (!dom_sid_equal(&s->account_sid, creds->sid)) {
+		if (!dom_sid_equal(&s->account_sid, &creds->ex->client_sid)) {
 			goto new_state;
 		}
 		if (s->auth_type != auth_type) {
@@ -92,7 +92,7 @@ new_state:
 		return NT_STATUS_NO_MEMORY;
 	}
 
-	s->account_sid = *creds->sid;
+	s->account_sid = creds->ex->client_sid;
 	s->auth_type = auth_type;
 	s->auth_level = auth_level;
 	s->result = NT_STATUS_MORE_PROCESSING_REQUIRED;
@@ -548,6 +548,8 @@ NTSTATUS dcesrv_netr_creds_server_step_check(struct dcesrv_call_state *dce_call,
 					       computer_name,
 					       received_authenticator,
 					       return_authenticator,
+					       auth_type,
+					       auth_level,
 					       &creds);
 	if (!NT_STATUS_IS_OK(nt_status)) {
 		ZERO_STRUCTP(return_authenticator);

python/samba/tests/krb5/kdc_base_test.py

@@ -51,6 +51,7 @@ from samba.credentials import (
 from samba.crypto import des_crypt_blob_16, md4_hash_blob
 from samba.dcerpc import (
     claims,
+    dcerpc,
     drsblobs,
     drsuapi,
     krb5ccache,
@@ -3685,10 +3686,12 @@ class KDCBaseTest(TestCaseInTempDir, RawKerberosTest):
         workstation = domain_joined_mach_creds.get_username()
 
         # Calling this initializes netlogon_creds on mach_creds, as is required
-        # before calling mach_creds.encrypt_samr_password().
+        # before calling mach_creds.encrypt_netr_PasswordInfo().
         conn = netlogon.netlogon(f'ncacn_ip_tcp:{dc_server}[schannel,seal]',
                                  self.get_lp(),
                                  domain_joined_mach_creds)
+        auth_type = dcerpc.DCERPC_AUTH_TYPE_SCHANNEL
+        auth_level = dcerpc.DCERPC_AUTH_LEVEL_PRIVACY
 
         if logon_type == netlogon.NetlogonInteractiveInformation:
             logon = netlogon.netr_PasswordInfo()
@@ -3698,11 +3701,14 @@ class KDCBaseTest(TestCaseInTempDir, RawKerberosTest):
 
             nt_pass = samr.Password()
             nt_pass.hash = list(creds.get_nt_hash())
-            domain_joined_mach_creds.encrypt_samr_password(nt_pass)
 
             logon.lmpassword = lm_pass
             logon.ntpassword = nt_pass
 
+            domain_joined_mach_creds.encrypt_netr_PasswordInfo(info=logon,
+                                                               auth_type=auth_type,
+                                                               auth_level=auth_level)
+
         elif logon_type == netlogon.NetlogonNetworkInformation:
             computername = ntlmssp.AV_PAIR()
             computername.AvId = ntlmssp.MsvAvNbComputerName

source3/rpc_client/cli_netlogon.c

@@ -387,6 +387,7 @@ again:
 		if (!retry && NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
 			DBG_DEBUG("Retrying with serverauthenticate\n");
 			TALLOC_FREE(lck);
+			force_reauth = true;
 			retry = true;
 			goto again;
 		}

source3/rpc_server/netlogon/srv_netlog_nt.c

@@ -886,6 +886,7 @@ NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
 	/* r->in.negotiate_flags is an aliased pointer to r->out.negotiate_flags,
 	 * so use a copy to avoid destroying the client values. */
 	uint32_t in_neg_flags = *r->in.negotiate_flags;
+	uint32_t neg_flags = 0;
 	const char *fn;
 	struct loadparm_context *lp_ctx = p->dce_call->conn->dce_ctx->lp_ctx;
 	struct dom_sid sid;
@@ -902,7 +903,6 @@ NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
 	 * an error or not.
 	 */
 
-	/* 0x000001ff */
 	srv_flgs = NETLOGON_NEG_ACCOUNT_LOCKOUT |
 		   NETLOGON_NEG_PERSISTENT_SAMREPL |
 		   NETLOGON_NEG_ARCFOUR |
@@ -912,20 +912,22 @@ NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
 		   NETLOGON_NEG_MULTIPLE_SIDS |
 		   NETLOGON_NEG_REDO |
 		   NETLOGON_NEG_PASSWORD_CHANGE_REFUSAL |
-		   NETLOGON_NEG_PASSWORD_SET2;
+		   NETLOGON_NEG_PASSWORD_SET2 |
+		   NETLOGON_NEG_STRONG_KEYS |
+		   NETLOGON_NEG_SUPPORTS_AES |
+		   NETLOGON_NEG_SCHANNEL;
 
-	/* Ensure we support strong (128-bit) keys. */
-	if (in_neg_flags & NETLOGON_NEG_STRONG_KEYS) {
-		srv_flgs |= NETLOGON_NEG_STRONG_KEYS;
-	}
-
-	if (in_neg_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		srv_flgs |= NETLOGON_NEG_SUPPORTS_AES;
-	}
-
-	if (in_neg_flags & NETLOGON_NEG_SCHANNEL) {
-		srv_flgs |= NETLOGON_NEG_SCHANNEL;
-	}
+	/*
+	 * With SAMBA_WEAK_CRYPTO_DISALLOWED we will return DOWNGRADE_DETECTED
+	 * with negotiate_flags = 0 below, if NETLOGON_NEG_SUPPORTS_AES was not
+	 * negotiated...
+	 *
+	 * And if NETLOGON_NEG_SUPPORTS_AES was negotiated there's no harm in
+	 * returning the NETLOGON_NEG_ARCFOUR flag too...
+	 *
+	 * So there's no reason to remove NETLOGON_NEG_ARCFOUR nor
+	 * NETLOGON_NEG_STRONG_KEYS from srv_flgs...
+	 */
 
 	/*
 	 * Support authentication of trusted domains.
@@ -940,12 +942,7 @@ NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
 			    NETLOGON_NEG_NEUTRALIZE_NT4_EMULATION;
 	}
 
-	/*
-	 * If weak crypto is disabled, do not announce that we support RC4.
-	 */
-	if (lp_weak_crypto() == SAMBA_WEAK_CRYPTO_DISALLOWED) {
-		srv_flgs &= ~NETLOGON_NEG_ARCFOUR;
-	}
+	neg_flags = in_neg_flags & srv_flgs;
 
 	switch (dce_call->pkt.u.request.opnum) {
 		case NDR_NETR_SERVERAUTHENTICATE:
@@ -961,6 +958,19 @@ NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
 			return NT_STATUS_INTERNAL_ERROR;
 	}
 
+	if (lp_weak_crypto() == SAMBA_WEAK_CRYPTO_DISALLOWED) {
+		if (!(neg_flags & NETLOGON_NEG_SUPPORTS_AES)) {
+			DBG_NOTICE("%s: no AES support negotiated from client %s\n",
+				   fn, r->in.computer_name);
+			/*
+			 * Here we match Windows 2012 and return no flags.
+			 */
+			neg_flags = 0;
+			status = NT_STATUS_DOWNGRADE_DETECTED;
+			goto out;
+		}
+	}
+
 	/* We use this as the key to store the creds: */
 	/* r->in.computer_name */
 
@@ -1000,7 +1010,9 @@ NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
 					   &mach_pwd,
 					   r->in.credentials,
 					   r->out.return_credentials,
-					   srv_flgs);
+					   in_neg_flags,
+					   &sid,
+					   neg_flags);
 	if (!creds) {
 		DEBUG(0,("%s: netlogon_creds_server_check failed. Rejecting auth "
 			"request from client %s machine account %s\n",
@@ -1010,12 +1022,6 @@ NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
 		goto out;
 	}
 
-	creds->sid = dom_sid_dup(creds, &sid);
-	if (!creds->sid) {
-		status = NT_STATUS_NO_MEMORY;
-		goto out;
-	}
-
 	/* Store off the state so we can continue after client disconnect. */
 	become_root();
 	status = schannel_save_creds_state(p->mem_ctx, lp_ctx, creds);
@@ -1032,7 +1038,7 @@ NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
 
   out:
 
-	*r->out.negotiate_flags = srv_flgs;
+	*r->out.negotiate_flags = neg_flags;
 	return status;
 }
 
@@ -1301,6 +1307,11 @@ NTSTATUS _netr_ServerPasswordSet(struct pipes_struct *p,
 	size_t i;
 	struct netlogon_creds_CredentialState *creds = NULL;
 	struct _samr_Credentials_t cr = { CRED_TYPE_NT_HASH, {0}};
+	const struct dom_sid *client_sid = NULL;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+
+	dcesrv_call_auth_info(dce_call, &auth_type, &auth_level);
 
 	DEBUG(5,("_netr_ServerPasswordSet: %d\n", __LINE__));
 
@@ -1325,11 +1336,15 @@ NTSTATUS _netr_ServerPasswordSet(struct pipes_struct *p,
 		TALLOC_FREE(creds);
 		return status;
 	}
+	client_sid = &creds->ex->client_sid;
 
 	DEBUG(3,("_netr_ServerPasswordSet: Server Password Set by remote machine:[%s] on account [%s]\n",
 			r->in.computer_name, creds->computer_name));
 
-	status = netlogon_creds_des_decrypt(creds, r->in.new_password);
+	status = netlogon_creds_decrypt_samr_Password(creds,
+						      r->in.new_password,
+						      auth_type,
+						      auth_level);
 	if (!NT_STATUS_IS_OK(status)) {
 		return status;
 	}
@@ -1343,7 +1358,7 @@ NTSTATUS _netr_ServerPasswordSet(struct pipes_struct *p,
 	status = netr_set_machine_account_password(p->mem_ctx,
 						   session_info,
 						   p->msg_ctx,
-						   creds->sid,
+						   client_sid,
 						   &cr);
 	return status;
 }
@@ -1360,6 +1375,7 @@ NTSTATUS _netr_ServerPasswordSet2(struct pipes_struct *p,
 		dcesrv_call_session_info(dce_call);
 	NTSTATUS status;
 	struct netlogon_creds_CredentialState *creds = NULL;
+	const struct dom_sid *client_sid = NULL;
 	DATA_BLOB plaintext = data_blob_null;
 	DATA_BLOB new_password = data_blob_null;
 	size_t confounder_len;
@@ -1368,6 +1384,10 @@ NTSTATUS _netr_ServerPasswordSet2(struct pipes_struct *p,
 	struct samr_CryptPassword password_buf;
 	struct _samr_Credentials_t cr = { CRED_TYPE_PLAIN_TEXT, {0}};
 	bool ok;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+
+	dcesrv_call_auth_info(dce_call, &auth_type, &auth_level);
 
 	become_root();
 	status = dcesrv_netr_creds_server_step_check(p->dce_call,
@@ -1385,6 +1405,7 @@ NTSTATUS _netr_ServerPasswordSet2(struct pipes_struct *p,
 		TALLOC_FREE(creds);
 		return status;
 	}
+	client_sid = &creds->ex->client_sid;
 
 	DBG_NOTICE("Server Password Set2 by remote "
 		   "machine:[%s] on account [%s]\n",
@@ -1395,15 +1416,10 @@ NTSTATUS _netr_ServerPasswordSet2(struct pipes_struct *p,
 	memcpy(password_buf.data, r->in.new_password->data, 512);
 	SIVAL(password_buf.data, 512, r->in.new_password->length);
 
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		status = netlogon_creds_aes_decrypt(creds,
-						    password_buf.data,
-						    516);
-	} else {
-		status = netlogon_creds_arcfour_crypt(creds,
-						      password_buf.data,
-						      516);
-	}
+	status = netlogon_creds_decrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
 	if (!NT_STATUS_IS_OK(status)) {
 		TALLOC_FREE(creds);
 		return status;
@@ -1505,7 +1521,7 @@ NTSTATUS _netr_ServerPasswordSet2(struct pipes_struct *p,
 	status = netr_set_machine_account_password(p->mem_ctx,
 						   session_info,
 						   p->msg_ctx,
-						   creds->sid,
+						   client_sid,
 						   &cr);
 	TALLOC_FREE(creds);
 	return status;
@@ -1745,7 +1761,9 @@ static NTSTATUS _netr_LogonSamLogon_base(struct pipes_struct *p,
 
 	status = netlogon_creds_decrypt_samlogon_logon(creds,
 						       r->in.logon_level,
-						       logon);
+						       logon,
+						       auth_type,
+						       auth_level);
 	if (!NT_STATUS_IS_OK(status)) {
 		return status;
 	}
@@ -1928,7 +1946,9 @@ static NTSTATUS _netr_LogonSamLogon_base(struct pipes_struct *p,
 
 	status = netlogon_creds_encrypt_samlogon_validation(creds,
 							    r->in.validation_level,
-							    r->out.validation);
+							    r->out.validation,
+							    auth_type,
+							    auth_level);
 
 	return status;
 }
@@ -2297,12 +2317,7 @@ NTSTATUS _netr_LogonGetCapabilities(struct pipes_struct *p,
 	case 1:
 		break;
 	case 2:
-		/*
-		 * Until we know the details behind KB5028166
-		 * just return DCERPC_NCA_S_FAULT_INVALID_TAG
-		 * like an unpatched Windows Server.
-		 */
-		FALL_THROUGH;
+		break;
 	default:
 		/*
 		 * There would not be a way to marshall the
@@ -2330,7 +2345,15 @@ NTSTATUS _netr_LogonGetCapabilities(struct pipes_struct *p,
 		return status;
 	}
 
+	switch (r->in.query_level) {
+	case 1:
 		r->out.capabilities->server_capabilities = creds->negotiate_flags;
+		break;
+	case 2:
+		r->out.capabilities->requested_flags =
+			creds->ex->client_requested_flags;
+		break;
+	}
 
 	return NT_STATUS_OK;
 }
@@ -2724,7 +2747,9 @@ static NTSTATUS get_password_from_trustAuth(TALLOC_CTX *mem_ctx,
 					    const DATA_BLOB *trustAuth_blob,
 					    struct netlogon_creds_CredentialState *creds,
 					    struct samr_Password *current_pw_enc,
-					    struct samr_Password *previous_pw_enc)
+					    struct samr_Password *previous_pw_enc,
+					    enum dcerpc_AuthType auth_type,
+					    enum dcerpc_AuthLevel auth_level)
 {
 	enum ndr_err_code ndr_err;
 	struct trustAuthInOutBlob trustAuth;
@@ -2741,7 +2766,10 @@ static NTSTATUS get_password_from_trustAuth(TALLOC_CTX *mem_ctx,
 		mdfour(current_pw_enc->hash,
 		       trustAuth.current.array[0].AuthInfo.clear.password,
 		       trustAuth.current.array[0].AuthInfo.clear.size);
-		status = netlogon_creds_des_encrypt(creds, current_pw_enc);
+		status = netlogon_creds_encrypt_samr_Password(creds,
+							      current_pw_enc,
+							      auth_type,
+							      auth_level);
 		if (!NT_STATUS_IS_OK(status)) {
 			return status;
 		}
@@ -2755,7 +2783,10 @@ static NTSTATUS get_password_from_trustAuth(TALLOC_CTX *mem_ctx,
 		mdfour(previous_pw_enc->hash,
 		       trustAuth.previous.array[0].AuthInfo.clear.password,
 		       trustAuth.previous.array[0].AuthInfo.clear.size);
-		status = netlogon_creds_des_encrypt(creds, previous_pw_enc);
+		status = netlogon_creds_encrypt_samr_Password(creds,
+							      previous_pw_enc,
+							      auth_type,
+							      auth_level);
 		if (!NT_STATUS_IS_OK(status)) {
 			return status;
 		}
@@ -2780,6 +2811,10 @@ NTSTATUS _netr_ServerGetTrustInfo(struct pipes_struct *p,
 	bool trusted;
 	struct netr_TrustInfo *trust_info;
 	struct pdb_trusted_domain *td;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+
+	dcesrv_call_auth_info(p->dce_call, &auth_type, &auth_level);
 
 	/* TODO: check server name */
 
@@ -2856,8 +2891,9 @@ NTSTATUS _netr_ServerGetTrustInfo(struct pipes_struct *p,
 						     &td->trust_auth_incoming,
 						     creds,
 						     r->out.new_owf_password,
-						     r->out.old_owf_password);
-
+						     r->out.old_owf_password,
+						     auth_type,
+						     auth_level);
 		if (!NT_STATUS_IS_OK(status)) {
 			return status;
 		}
@@ -2893,6 +2929,31 @@ NTSTATUS _netr_DsrUpdateReadOnlyServerDnsRecords(struct pipes_struct *p,
 	return NT_STATUS_NOT_IMPLEMENTED;
 }
 
+DCESRV_COMPAT_NOT_USED_ON_WIRE(netr_Opnum49NotUsedOnWire)
+DCESRV_COMPAT_NOT_USED_ON_WIRE(netr_Opnum50NotUsedOnWire)
+DCESRV_COMPAT_NOT_USED_ON_WIRE(netr_Opnum51NotUsedOnWire)
+DCESRV_COMPAT_NOT_USED_ON_WIRE(netr_Opnum52NotUsedOnWire)
+DCESRV_COMPAT_NOT_USED_ON_WIRE(netr_Opnum53NotUsedOnWire)
+
+NTSTATUS _netr_ChainSetClientAttributes(struct pipes_struct *p,
+					struct netr_ChainSetClientAttributes *r)
+{
+	p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+DCESRV_COMPAT_NOT_USED_ON_WIRE(netr_Opnum55NotUsedOnWire)
+DCESRV_COMPAT_NOT_USED_ON_WIRE(netr_Opnum56NotUsedOnWire)
+DCESRV_COMPAT_NOT_USED_ON_WIRE(netr_Opnum57NotUsedOnWire)
+DCESRV_COMPAT_NOT_USED_ON_WIRE(netr_Opnum58NotUsedOnWire)
+
+NTSTATUS _netr_ServerAuthenticateKerberos(struct pipes_struct *p,
+					  struct netr_ServerAuthenticateKerberos *r)
+{
+	p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
 /*
  * Define the bind function that will be used by ndr_netlogon_scompat.c,
  * included at the bottom of this file.

source3/rpc_server/rpc_pipes.h

@@ -70,4 +70,10 @@ void *_find_policy_by_hnd(struct pipes_struct *p,
 bool close_policy_hnd(struct pipes_struct *p, struct policy_handle *hnd);
 bool pipe_access_check(struct pipes_struct *p);
 
+#define DCESRV_COMPAT_NOT_USED_ON_WIRE(__opname) \
+void _## __opname(struct pipes_struct *p, struct __opname *r) \
+{ \
+	p->fault_state = DCERPC_FAULT_OP_RNG_ERROR; \
+}
+
 #endif /* _RPC_PIPES_H_ */

source4/dsdb/common/rodc_helper.c

@@ -237,7 +237,7 @@ WERROR samdb_confirm_rodc_allowed_to_repl_to_sid_list(struct ldb_context *sam_ct
  * rather than relying on the caller providing those
  */
 WERROR samdb_confirm_rodc_allowed_to_repl_to(struct ldb_context *sam_ctx,
-					     struct dom_sid *rodc_machine_account_sid,
+					     const struct dom_sid *rodc_machine_account_sid,
 					     struct ldb_message *rodc_msg,
 					     struct ldb_message *obj_msg)
 {

source4/dsdb/common/util_trusts.c

@@ -2646,7 +2646,7 @@ NTSTATUS dsdb_trust_search_tdo_by_sid(struct ldb_context *sam_ctx,
 	return NT_STATUS_OK;
 }
 
-NTSTATUS dsdb_trust_get_incoming_passwords(struct ldb_message *msg,
+NTSTATUS dsdb_trust_get_incoming_passwords(const struct ldb_message *msg,
 					   TALLOC_CTX *mem_ctx,
 					   struct samr_Password **_current,
 					   struct samr_Password **_previous)

source4/librpc/rpc/dcerpc_schannel.c

@@ -40,6 +40,8 @@ struct schannel_key_state {
 	bool dcerpc_schannel_auto;
 	struct cli_credentials *credentials;
 	struct netlogon_creds_CredentialState *creds;
+	uint32_t requested_negotiate_flags;
+	uint32_t required_negotiate_flags;
 	uint32_t local_negotiate_flags;
 	uint32_t remote_negotiate_flags;
 	struct netr_Credential credentials1;
@@ -55,7 +57,8 @@ static void continue_secondary_connection(struct composite_context *ctx);
 static void continue_bind_auth_none(struct composite_context *ctx);
 static void continue_srv_challenge(struct tevent_req *subreq);
 static void continue_srv_auth2(struct tevent_req *subreq);
-static void continue_get_capabilities(struct tevent_req *subreq);
+static void continue_get_negotiated_capabilities(struct tevent_req *subreq);
+static void continue_get_client_capabilities(struct tevent_req *subreq);
 
 
 /*
@@ -183,7 +186,7 @@ static void continue_srv_challenge(struct tevent_req *subreq)
 	s->a.in.secure_channel_type =
 		cli_credentials_get_secure_channel_type(s->credentials);
 	s->a.in.computer_name    = cli_credentials_get_workstation(s->credentials);
-	s->a.in.negotiate_flags  = &s->local_negotiate_flags;
+	s->a.in.negotiate_flags  = &s->requested_negotiate_flags;
 	s->a.in.credentials      = &s->credentials3;
 	s->a.out.negotiate_flags = &s->remote_negotiate_flags;
 	s->a.out.return_credentials     = &s->credentials3;
@@ -194,6 +197,7 @@ static void continue_srv_challenge(struct tevent_req *subreq)
 					      s->a.in.secure_channel_type,
 					      &s->credentials1, &s->credentials2,
 					      s->mach_pwd, &s->credentials3,
+					      s->requested_negotiate_flags,
 					      s->local_negotiate_flags);
 	if (composite_nomem(s->creds, c)) {
 		return;
@@ -218,10 +222,17 @@ static void continue_srv_auth2(struct tevent_req *subreq)
 {
 	struct composite_context *c;
 	struct schannel_key_state *s;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	c = tevent_req_callback_data(subreq, struct composite_context);
 	s = talloc_get_type(c->private_data, struct schannel_key_state);
 
+	dcerpc_binding_handle_auth_info(s->pipe2->binding_handle,
+					&auth_type,
+					&auth_level);
+
 	/* receive rpc request result - auth2 credentials */ 
 	c->status = dcerpc_netr_ServerAuthenticate2_r_recv(subreq, s);
 	TALLOC_FREE(subreq);
@@ -233,6 +244,29 @@ static void continue_srv_auth2(struct tevent_req *subreq)
 		return;
 	}
 
+	{
+		uint32_t rqf = s->required_negotiate_flags;
+		uint32_t rf = s->remote_negotiate_flags;
+		uint32_t lf = s->local_negotiate_flags;
+
+		if ((rf & NETLOGON_NEG_SUPPORTS_AES) &&
+		    (lf & NETLOGON_NEG_SUPPORTS_AES))
+		{
+			rqf &= ~NETLOGON_NEG_ARCFOUR;
+			rqf &= ~NETLOGON_NEG_STRONG_KEYS;
+		}
+
+		if ((rqf & rf) != rqf) {
+			rqf = s->required_negotiate_flags;
+			DBG_ERR("The client capabilities don't match "
+				"the server capabilities: local[0x%08X] "
+				"required[0x%08X] remote[0x%08X]\n",
+				lf, rqf, rf);
+			composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
+			return;
+		}
+	}
+
 	/*
 	 * Strong keys could be unsupported (NT4) or disabled. So retry with the
 	 * flags returned by the server. - asn
@@ -243,6 +277,14 @@ static void continue_srv_auth2(struct tevent_req *subreq)
 		uint32_t rf = s->remote_negotiate_flags;
 		const char *rn = NULL;
 
+		if ((lf & rf) == lf) {
+			/*
+			 * without a change in flags
+			 * there's no need to retry...
+			 */
+			s->dcerpc_schannel_auto = false;
+		}
+
 		if (!s->dcerpc_schannel_auto) {
 			composite_error(c, s->a.out.result);
 			return;
@@ -277,7 +319,7 @@ static void continue_srv_auth2(struct tevent_req *subreq)
 			  "and retry! local[0x%08X] remote[0x%08X]\n",
 			  ln, rn, lf, rf));
 
-		s->local_negotiate_flags = s->remote_negotiate_flags;
+		s->local_negotiate_flags &= s->remote_negotiate_flags;
 
 		generate_random_buffer(s->credentials1.data,
 				       sizeof(s->credentials1.data));
@@ -292,11 +334,30 @@ static void continue_srv_auth2(struct tevent_req *subreq)
 		return;
 	}
 
-	s->creds->negotiate_flags = s->remote_negotiate_flags;
-
 	/* verify credentials */
-	if (!netlogon_creds_client_check(s->creds, s->a.out.return_credentials)) {
-		composite_error(c, NT_STATUS_UNSUCCESSFUL);
+	status = netlogon_creds_client_verify(s->creds,
+					      s->a.out.return_credentials,
+					      auth_type,
+					      auth_level);
+	if (!NT_STATUS_IS_OK(status)) {
+		composite_error(c, status);
+		return;
+	}
+
+	if (s->requested_negotiate_flags == s->local_negotiate_flags) {
+		/*
+		 * Without a downgrade in the crypto we proposed
+		 * we can adjust the otherwise downgraded flags
+		 * before storing.
+		 */
+		s->creds->negotiate_flags &= s->remote_negotiate_flags;
+	} else if (s->local_negotiate_flags != s->remote_negotiate_flags) {
+		/*
+		 * We downgraded our crypto once, we should not
+		 * allow any additional downgrade!
+		 */
+		DBG_ERR("%s: NT_STATUS_DOWNGRADE_DETECTED\n", __location__);
+		composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
 		return;
 	}
 
@@ -317,6 +378,8 @@ static struct composite_context *dcerpc_schannel_key_send(TALLOC_CTX *mem_ctx,
 	struct composite_context *epm_map_req;
 	enum netr_SchannelType schannel_type = cli_credentials_get_secure_channel_type(credentials);
 	struct cli_credentials *epm_creds = NULL;
+	bool reject_md5_servers = false;
+	bool require_strong_key = false;
 
 	/* composite context allocation and setup */
 	c = composite_create(mem_ctx, p->conn->event_ctx);
@@ -330,19 +393,48 @@ static struct composite_context *dcerpc_schannel_key_send(TALLOC_CTX *mem_ctx,
 	s->pipe        = p;
 	s->credentials = credentials;
 	s->local_negotiate_flags = NETLOGON_NEG_AUTH2_FLAGS;
+	s->required_negotiate_flags = NETLOGON_NEG_AUTHENTICATED_RPC;
 
 	/* allocate credentials */
 	if (s->pipe->conn->flags & DCERPC_SCHANNEL_128) {
 		s->local_negotiate_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
+		require_strong_key = true;
 	}
 	if (s->pipe->conn->flags & DCERPC_SCHANNEL_AES) {
 		s->local_negotiate_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
-		s->local_negotiate_flags |= NETLOGON_NEG_SUPPORTS_AES;
+		reject_md5_servers = true;
 	}
 	if (s->pipe->conn->flags & DCERPC_SCHANNEL_AUTO) {
 		s->local_negotiate_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
 		s->local_negotiate_flags |= NETLOGON_NEG_SUPPORTS_AES;
 		s->dcerpc_schannel_auto = true;
+		reject_md5_servers = lpcfg_reject_md5_servers(lp_ctx);
+		require_strong_key = lpcfg_require_strong_key(lp_ctx);
+	}
+
+	if (lpcfg_weak_crypto(lp_ctx) == SAMBA_WEAK_CRYPTO_DISALLOWED) {
+		reject_md5_servers = true;
+	}
+
+	if (reject_md5_servers) {
+		require_strong_key = true;
+	}
+
+	if (require_strong_key) {
+		s->required_negotiate_flags |= NETLOGON_NEG_ARCFOUR;
+		s->required_negotiate_flags |= NETLOGON_NEG_STRONG_KEYS;
+	}
+
+	if (reject_md5_servers) {
+		s->required_negotiate_flags |= NETLOGON_NEG_PASSWORD_SET2;
+		s->required_negotiate_flags |= NETLOGON_NEG_SUPPORTS_AES;
+	}
+
+	s->local_negotiate_flags |= s->required_negotiate_flags;
+
+	if (s->required_negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
+		s->required_negotiate_flags &= ~NETLOGON_NEG_ARCFOUR;
+		s->required_negotiate_flags &= ~NETLOGON_NEG_STRONG_KEYS;
 	}
 
 	/* type of authentication depends on schannel type */
@@ -350,9 +442,7 @@ static struct composite_context *dcerpc_schannel_key_send(TALLOC_CTX *mem_ctx,
 		s->local_negotiate_flags |= NETLOGON_NEG_RODC_PASSTHROUGH;
 	}
 
-	if (lpcfg_weak_crypto(lp_ctx) == SAMBA_WEAK_CRYPTO_DISALLOWED) {
-		s->local_negotiate_flags &= ~NETLOGON_NEG_ARCFOUR;
-	}
+	s->requested_negotiate_flags = s->local_negotiate_flags;
 
 	epm_creds = cli_credentials_init_anon(s);
 	if (composite_nomem(epm_creds, c)) return c;
@@ -379,7 +469,8 @@ static struct composite_context *dcerpc_schannel_key_send(TALLOC_CTX *mem_ctx,
  */
 static NTSTATUS dcerpc_schannel_key_recv(struct composite_context *c,
 				TALLOC_CTX *mem_ctx,
-				struct netlogon_creds_CredentialState **creds)
+				struct netlogon_creds_CredentialState **creds,
+				uint32_t *requested_negotiate_flags)
 {
 	NTSTATUS status = composite_wait(c);
 
@@ -388,6 +479,7 @@ static NTSTATUS dcerpc_schannel_key_recv(struct composite_context *c,
 			talloc_get_type_abort(c->private_data,
 			struct schannel_key_state);
 		*creds = talloc_move(mem_ctx, &s->creds);
+		*requested_negotiate_flags = s->requested_negotiate_flags;
 	}
 
 	talloc_free(c);
@@ -398,6 +490,7 @@ static NTSTATUS dcerpc_schannel_key_recv(struct composite_context *c,
 struct auth_schannel_state {
 	struct dcerpc_pipe *pipe;
 	struct cli_credentials *credentials;
+	uint32_t requested_negotiate_flags;
 	const struct ndr_interface_table *table;
 	struct loadparm_context *lp_ctx;
 	uint8_t auth_level;
@@ -406,7 +499,9 @@ struct auth_schannel_state {
 	struct netr_Authenticator auth;
 	struct netr_Authenticator return_auth;
 	union netr_Capabilities capabilities;
+	union netr_Capabilities client_caps;
 	struct netr_LogonGetCapabilities c;
+	union netr_CONTROL_QUERY_INFORMATION ctrl_info;
 };
 
 
@@ -427,7 +522,11 @@ static void continue_schannel_key(struct composite_context *ctx)
 	NTSTATUS status;
 
 	/* receive schannel key */
-	status = c->status = dcerpc_schannel_key_recv(ctx, s, &s->creds_state);
+	c->status = dcerpc_schannel_key_recv(ctx,
+					     s,
+					     &s->creds_state,
+					     &s->requested_negotiate_flags);
+	status = c->status;
 	if (!composite_is_ok(c)) {
 		DEBUG(1, ("Failed to setup credentials: %s\n", nt_errstr(status)));
 		return;
@@ -496,36 +595,52 @@ static void continue_bind_auth(struct composite_context *ctx)
 								 &s->c);
 		if (composite_nomem(subreq, c)) return;
 
-		tevent_req_set_callback(subreq, continue_get_capabilities, c);
+		tevent_req_set_callback(subreq,
+					continue_get_negotiated_capabilities,
+					c);
 		return;
 	}
 
 	composite_done(c);
 }
 
+static void continue_logon_control_do(struct composite_context *c);
+
 /*
   Stage 4 of auth_schannel: Get the Logon Capabilities and verify them.
 */
-static void continue_get_capabilities(struct tevent_req *subreq)
+static void continue_get_negotiated_capabilities(struct tevent_req *subreq)
 {
 	struct composite_context *c;
 	struct auth_schannel_state *s;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	c = tevent_req_callback_data(subreq, struct composite_context);
 	s = talloc_get_type(c->private_data, struct auth_schannel_state);
 
+	dcerpc_binding_handle_auth_info(s->pipe->binding_handle,
+					&auth_type,
+					&auth_level);
+
 	/* receive rpc request result */
 	c->status = dcerpc_netr_LogonGetCapabilities_r_recv(subreq, s);
 	TALLOC_FREE(subreq);
 	if (NT_STATUS_EQUAL(c->status, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE)) {
 		if (s->creds_state->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-			composite_error(c, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			DBG_ERR("%s: NT_STATUS_DOWNGRADE_DETECTED\n", __location__);
+			composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
 			return;
-		} else {
-			/* This is probably NT */
-			composite_done(c);
+		} else if (s->creds_state->negotiate_flags & NETLOGON_NEG_STRONG_KEYS) {
+			DBG_ERR("%s: NT_STATUS_DOWNGRADE_DETECTED\n", __location__);
+			composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
 			return;
 		}
+
+		/* This is probably NT */
+		continue_logon_control_do(c);
+		return;
 	} else if (!composite_is_ok(c)) {
 		return;
 	}
@@ -533,7 +648,8 @@ static void continue_get_capabilities(struct tevent_req *subreq)
 	if (NT_STATUS_EQUAL(s->c.out.result, NT_STATUS_NOT_IMPLEMENTED)) {
 		if (s->creds_state->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
 			/* This means AES isn't supported. */
-			composite_error(c, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			DBG_ERR("%s: NT_STATUS_DOWNGRADE_DETECTED\n", __location__);
+			composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
 			return;
 		}
 
@@ -543,9 +659,12 @@ static void continue_get_capabilities(struct tevent_req *subreq)
 	}
 
 	/* verify credentials */
-	if (!netlogon_creds_client_check(&s->save_creds_state,
-					 &s->c.out.return_authenticator->cred)) {
-		composite_error(c, NT_STATUS_UNSUCCESSFUL);
+	status = netlogon_creds_client_verify(&s->save_creds_state,
+					      &s->c.out.return_authenticator->cred,
+					      auth_type,
+					      auth_level);
+	if (!NT_STATUS_IS_OK(status)) {
+		composite_error(c, status);
 		return;
 	}
 
@@ -559,19 +678,175 @@ static void continue_get_capabilities(struct tevent_req *subreq)
 
 	/* compare capabilities */
 	if (s->creds_state->negotiate_flags != s->capabilities.server_capabilities) {
-		DEBUG(2, ("The client capabilities don't match the server "
+		DBG_ERR("The client capabilities don't match the server "
 			"capabilities: local[0x%08X] remote[0x%08X]\n",
 			s->creds_state->negotiate_flags,
-			  s->capabilities.server_capabilities));
-		composite_error(c, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			s->capabilities.server_capabilities);
+		composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
 		return;
 	}
 
-	/* TODO: Add downgrade detection. */
+	if ((s->requested_negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) &&
+	    (!(s->creds_state->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES)))
+	{
+		DBG_ERR("%s: NT_STATUS_DOWNGRADE_DETECTED\n", __location__);
+		composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
+		return;
+	}
+
+	ZERO_STRUCT(s->return_auth);
+
+	s->save_creds_state = *s->creds_state;
+	status = netlogon_creds_client_authenticator(&s->save_creds_state,
+						     &s->auth);
+	if (!NT_STATUS_IS_OK(status)) {
+		composite_error(c, status);
+		return;
+	}
+
+	s->c.in.credential            = &s->auth;
+	s->c.in.return_authenticator  = &s->return_auth;
+	s->c.in.query_level           = 2;
+
+	s->c.out.capabilities         = &s->client_caps;
+	s->c.out.return_authenticator = &s->return_auth;
+
+	subreq = dcerpc_netr_LogonGetCapabilities_r_send(s,
+							 c->event_ctx,
+							 s->pipe->binding_handle,
+							 &s->c);
+	if (composite_nomem(subreq, c)) return;
+
+	tevent_req_set_callback(subreq, continue_get_client_capabilities, c);
+	return;
+}
+
+static void continue_get_client_capabilities(struct tevent_req *subreq)
+{
+	struct composite_context *c;
+	struct auth_schannel_state *s;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
+
+	c = tevent_req_callback_data(subreq, struct composite_context);
+	s = talloc_get_type(c->private_data, struct auth_schannel_state);
+
+	dcerpc_binding_handle_auth_info(s->pipe->binding_handle,
+					&auth_type,
+					&auth_level);
+
+	/* receive rpc request result */
+	c->status = dcerpc_netr_LogonGetCapabilities_r_recv(subreq, s);
+	TALLOC_FREE(subreq);
+	if (NT_STATUS_EQUAL(c->status, NT_STATUS_RPC_BAD_STUB_DATA)) {
+		/*
+		 * unpatched Samba server, see
+		 * https://bugzilla.samba.org/show_bug.cgi?id=15418
+		 */
+		c->status = NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE;
+	}
+	if (NT_STATUS_EQUAL(c->status, NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE)) {
+		/*
+		 * Here we know the negotiated flags were already
+		 * verified with query_level=1, which means
+		 * the server supported NETLOGON_NEG_SUPPORTS_AES
+		 * and also NETLOGON_NEG_AUTHENTICATED_RPC
+		 *
+		 * As we're using DCERPC_AUTH_TYPE_SCHANNEL with
+		 * DCERPC_AUTH_LEVEL_INTEGRITY or DCERPC_AUTH_LEVEL_PRIVACY
+		 * we should detect a faked
+		 * NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
+		 * with the next request as the sequence number processing
+		 * gets out of sync.
+		 *
+		 * So we'll do a LogonControl message to check that...
+		 */
+		continue_logon_control_do(c);
+		return;
+	}
+	if (!composite_is_ok(c)) {
+		return;
+	}
+
+	/* verify credentials */
+	status = netlogon_creds_client_verify(&s->save_creds_state,
+					      &s->c.out.return_authenticator->cred,
+					      auth_type,
+					      auth_level);
+	if (!NT_STATUS_IS_OK(status)) {
+		composite_error(c, status);
+		return;
+	}
+
+	if (!NT_STATUS_IS_OK(s->c.out.result)) {
+		composite_error(c, s->c.out.result);
+		return;
+	}
+
+	/* compare capabilities */
+	if (s->requested_negotiate_flags != s->client_caps.requested_flags) {
+		DBG_ERR("The client requested capabilities did not reach"
+			"the server! local[0x%08X] remote[0x%08X]\n",
+			s->requested_negotiate_flags,
+			s->client_caps.requested_flags);
+		composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
+		return;
+	}
+
+	*s->creds_state = s->save_creds_state;
+	cli_credentials_set_netlogon_creds(s->credentials, s->creds_state);
 
 	composite_done(c);
 }
 
+static void continue_logon_control_done(struct tevent_req *subreq);
+
+static void continue_logon_control_do(struct composite_context *c)
+{
+	struct auth_schannel_state *s = NULL;
+	struct tevent_req *subreq = NULL;
+
+	s = talloc_get_type(c->private_data, struct auth_schannel_state);
+
+	subreq = dcerpc_netr_LogonControl_send(s,
+					       c->event_ctx,
+					       s->pipe->binding_handle,
+					       s->c.in.server_name,
+					       NETLOGON_CONTROL_QUERY,
+					       2,
+					       &s->ctrl_info);
+	if (composite_nomem(subreq, c)) return;
+
+	tevent_req_set_callback(subreq, continue_logon_control_done, c);
+}
+
+static void continue_logon_control_done(struct tevent_req *subreq)
+{
+	struct composite_context *c = NULL;
+	struct auth_schannel_state *s = NULL;
+	WERROR werr;
+
+	c = tevent_req_callback_data(subreq, struct composite_context);
+	s = talloc_get_type(c->private_data, struct auth_schannel_state);
+
+	/* receive rpc request result */
+	c->status = dcerpc_netr_LogonControl_recv(subreq, s, &werr);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(c->status)) {
+		DBG_ERR("%s: NT_STATUS_DOWNGRADE_DETECTED\n", __location__);
+		composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
+		return;
+	}
+
+	if (!W_ERROR_EQUAL(werr, WERR_NOT_SUPPORTED)) {
+		DBG_ERR("%s: NT_STATUS_DOWNGRADE_DETECTED\n", __location__);
+		composite_error(c, NT_STATUS_DOWNGRADE_DETECTED);
+		return;
+	}
+
+	composite_done(c);
+}
 
 /*
   Initiate schannel authentication request

source4/rpc_server/netlogon/dcerpc_netlogon.c

@@ -387,14 +387,23 @@ return_downgrade:
 	return orig_status;
 }
 
-/*
- * Do the actual processing of a netr_ServerAuthenticate3 message.
- * called from dcesrv_netr_ServerAuthenticate3, which handles the logging.
- */
-static NTSTATUS dcesrv_netr_ServerAuthenticate3_helper(
+typedef NTSTATUS (*dcesrv_netr_ServerAuthenticateGenericCallback_fn)(
+	struct dcesrv_call_state *dce_call,
+	const struct netlogon_server_pipe_state *challenge,
+	const struct netr_ServerAuthenticate3 *r,
+	uint32_t client_flags,
+	const struct dom_sid *client_sid,
+	uint32_t negotiate_flags,
+	const struct ldb_message *sam_msg,
+	const struct ldb_message *tdo_msg,
+	TALLOC_CTX *mem_ctx,
+	struct netlogon_creds_CredentialState **_creds);
+
+static NTSTATUS dcesrv_netr_ServerAuthenticateGeneric(
 	struct dcesrv_call_state *dce_call,
 	TALLOC_CTX *mem_ctx,
 	struct netr_ServerAuthenticate3 *r,
+	dcesrv_netr_ServerAuthenticateGenericCallback_fn auth_fn,
 	const char **trust_account_for_search,
 	const char **trust_account_in_db,
 	struct dom_sid **sid)
@@ -404,15 +413,18 @@ static NTSTATUS dcesrv_netr_ServerAuthenticate3_helper(
 	struct netlogon_server_pipe_state challenge;
 	struct netlogon_creds_CredentialState *creds;
 	struct ldb_context *sam_ctx;
-	struct samr_Password *curNtHash = NULL;
-	struct samr_Password *prevNtHash = NULL;
 	uint32_t user_account_control;
 	int num_records;
 	struct ldb_message **msgs;
+	struct ldb_message *tdo_msg = NULL;
 	NTSTATUS nt_status;
-	const char *attrs[] = {"unicodePwd", "userAccountControl",
-			       "objectSid", "samAccountName", NULL};
+	static const char *attrs[] = {"unicodePwd",
+				      "userAccountControl",
+				      "objectSid",
+				      "samAccountName",
+				      NULL};
 	uint32_t server_flags = 0;
+	uint32_t client_flags = 0;
 	uint32_t negotiate_flags = 0;
 
 	ZERO_STRUCTP(r->out.return_credentials);
@@ -494,14 +506,20 @@ static NTSTATUS dcesrv_netr_ServerAuthenticate3_helper(
 		       NETLOGON_NEG_AUTHENTICATED_RPC;
 
 	/*
-	 * If weak crypto is disabled, do not announce that we support RC4.
+	 * With SAMBA_WEAK_CRYPTO_DISALLOWED
+	 * dcesrv_netr_ServerAuthenticate3_check_downgrade() will return
+	 * DOWNGRADE_DETECTED with negotiate_flags = 0,
+	 * if NETLOGON_NEG_SUPPORTS_AES was not negotiated...
+	 *
+	 * And if NETLOGON_NEG_SUPPORTS_AES was negotiated there's no harm in
+	 * returning the NETLOGON_NEG_ARCFOUR flag too...
+	 *
+	 * So there's no reason to remove NETLOGON_NEG_ARCFOUR nor
+	 * NETLOGON_NEG_STRONG_KEYS from server_flags...
 	 */
-	if (lpcfg_weak_crypto(dce_call->conn->dce_ctx->lp_ctx) ==
-	    SAMBA_WEAK_CRYPTO_DISALLOWED) {
-		server_flags &= ~NETLOGON_NEG_ARCFOUR;
-	}
 
-	negotiate_flags = *r->in.negotiate_flags & server_flags;
+	client_flags = *r->in.negotiate_flags;
+	negotiate_flags = client_flags & server_flags;
 
 	switch (r->in.secure_channel_type) {
 	case SEC_CHAN_WKSTA:
@@ -535,13 +553,10 @@ static NTSTATUS dcesrv_netr_ServerAuthenticate3_helper(
 	if (r->in.secure_channel_type == SEC_CHAN_DOMAIN ||
 	    r->in.secure_channel_type == SEC_CHAN_DNS_DOMAIN)
 	{
-		struct ldb_message *tdo_msg = NULL;
-		const char * const tdo_attrs[] = {
-			"trustAuthIncoming",
+		static const char *const tdo_attrs[] = {"trustAuthIncoming",
 							"trustAttributes",
 							"flatName",
-			NULL
-		};
+							NULL};
 		char *encoded_name = NULL;
 		size_t len;
 		const char *flatname = NULL;
@@ -606,22 +621,6 @@ static NTSTATUS dcesrv_netr_ServerAuthenticate3_helper(
 				nt_status);
 		}
 
-		nt_status = dsdb_trust_get_incoming_passwords(tdo_msg, mem_ctx,
-							      &curNtHash,
-							      &prevNtHash);
-		if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_DISABLED)) {
-			return dcesrv_netr_ServerAuthenticate3_check_downgrade(
-				dce_call, r, pipe_state, negotiate_flags,
-				NULL, /* trust_account_in_db */
-				NT_STATUS_NO_TRUST_SAM_ACCOUNT);
-		}
-		if (!NT_STATUS_IS_OK(nt_status)) {
-			return dcesrv_netr_ServerAuthenticate3_check_downgrade(
-				dce_call, r, pipe_state, negotiate_flags,
-				NULL, /* trust_account_in_db */
-				nt_status);
-		}
-
 		flatname = ldb_msg_find_attr_as_string(tdo_msg, "flatName", NULL);
 		if (flatname == NULL) {
 			return dcesrv_netr_ServerAuthenticate3_check_downgrade(
@@ -742,60 +741,28 @@ static NTSTATUS dcesrv_netr_ServerAuthenticate3_helper(
 	}
 
 	if (!(user_account_control & UF_INTERDOMAIN_TRUST_ACCOUNT)) {
-		nt_status = samdb_result_passwords_no_lockout(mem_ctx,
-					dce_call->conn->dce_ctx->lp_ctx,
-					msgs[0], &curNtHash);
+		tdo_msg = NULL;
+	}
+
+	*sid = samdb_result_dom_sid(mem_ctx, msgs[0], "objectSid");
+	if (*sid == NULL) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	nt_status = auth_fn(dce_call,
+			    challenge_valid ? &challenge : NULL,
+			    r,
+			    client_flags,
+			    *sid,
+			    negotiate_flags,
+			    msgs[0],
+			    tdo_msg,
+			    mem_ctx,
+			    &creds);
 	if (!NT_STATUS_IS_OK(nt_status)) {
-			return NT_STATUS_ACCESS_DENIED;
+		ZERO_STRUCTP(r->out.return_credentials);
+		return nt_status;
 	}
-	}
-
-	if (curNtHash == NULL) {
-		return NT_STATUS_ACCESS_DENIED;
-	}
-
-	if (!challenge_valid) {
-		DEBUG(1, ("No challenge requested by client [%s/%s], "
-			  "cannot authenticate\n",
-			  log_escape(mem_ctx, r->in.computer_name),
-			  log_escape(mem_ctx, r->in.account_name)));
-		return NT_STATUS_ACCESS_DENIED;
-	}
-
-	creds = netlogon_creds_server_init(mem_ctx,
-					   r->in.account_name,
-					   r->in.computer_name,
-					   r->in.secure_channel_type,
-					   &challenge.client_challenge,
-					   &challenge.server_challenge,
-					   curNtHash,
-					   r->in.credentials,
-					   r->out.return_credentials,
-					   negotiate_flags);
-	if (creds == NULL && prevNtHash != NULL) {
-		/*
-		 * We fallback to the previous password for domain trusts.
-		 *
-		 * Note that lpcfg_old_password_allowed_period() doesn't
-		 * apply here.
-		 */
-		creds = netlogon_creds_server_init(mem_ctx,
-						   r->in.account_name,
-						   r->in.computer_name,
-						   r->in.secure_channel_type,
-						   &challenge.client_challenge,
-						   &challenge.server_challenge,
-						   prevNtHash,
-						   r->in.credentials,
-						   r->out.return_credentials,
-						   negotiate_flags);
-	}
-
-	if (creds == NULL) {
-		return NT_STATUS_ACCESS_DENIED;
-	}
-	creds->sid = samdb_result_dom_sid(creds, msgs[0], "objectSid");
-	*sid = talloc_memdup(mem_ctx, creds->sid, sizeof(struct dom_sid));
 
 	nt_status = schannel_save_creds_state(mem_ctx,
 					      dce_call->conn->dce_ctx->lp_ctx,
@@ -811,6 +778,125 @@ static NTSTATUS dcesrv_netr_ServerAuthenticate3_helper(
 	return NT_STATUS_OK;
 }
 
+static NTSTATUS dcesrv_netr_ServerAuthenticateNTHash_cb(
+	struct dcesrv_call_state *dce_call,
+	const struct netlogon_server_pipe_state *challenge,
+	const struct netr_ServerAuthenticate3 *r,
+	uint32_t client_flags,
+	const struct dom_sid *client_sid,
+	uint32_t negotiate_flags,
+	const struct ldb_message *sam_msg,
+	const struct ldb_message *tdo_msg,
+	TALLOC_CTX *mem_ctx,
+	struct netlogon_creds_CredentialState **_creds)
+{
+	TALLOC_CTX *frame = talloc_stackframe();
+	struct loadparm_context *lp_ctx = dce_call->conn->dce_ctx->lp_ctx;
+	struct netlogon_creds_CredentialState *creds = NULL;
+	struct samr_Password *curNtHash = NULL;
+	struct samr_Password *prevNtHash = NULL;
+	NTSTATUS status;
+
+	if (tdo_msg != NULL) {
+		status = dsdb_trust_get_incoming_passwords(tdo_msg,
+							   frame,
+							   &curNtHash,
+							   &prevNtHash);
+		if (NT_STATUS_EQUAL(status, NT_STATUS_ACCOUNT_DISABLED)) {
+			status = NT_STATUS_NO_TRUST_SAM_ACCOUNT;
+		}
+		if (!NT_STATUS_IS_OK(status)) {
+			TALLOC_FREE(frame);
+			return status;
+		}
+	} else {
+		status = samdb_result_passwords_no_lockout(frame,
+							   lp_ctx,
+							   sam_msg,
+							   &curNtHash);
+		if (!NT_STATUS_IS_OK(status)) {
+			TALLOC_FREE(frame);
+			return NT_STATUS_ACCESS_DENIED;
+		}
+	}
+
+	if (curNtHash == NULL) {
+		TALLOC_FREE(frame);
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	if (challenge == NULL) {
+		TALLOC_FREE(frame);
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	creds = netlogon_creds_server_init(mem_ctx,
+					   r->in.account_name,
+					   r->in.computer_name,
+					   r->in.secure_channel_type,
+					   &challenge->client_challenge,
+					   &challenge->server_challenge,
+					   curNtHash,
+					   r->in.credentials,
+					   r->out.return_credentials,
+					   client_flags,
+					   client_sid,
+					   negotiate_flags);
+	if (creds == NULL && prevNtHash != NULL) {
+		/*
+		 * We fallback to the previous password for domain trusts.
+		 *
+		 * Note that lpcfg_old_password_allowed_period() doesn't
+		 * apply here.
+		 */
+		creds = netlogon_creds_server_init(mem_ctx,
+						   r->in.account_name,
+						   r->in.computer_name,
+						   r->in.secure_channel_type,
+						   &challenge->client_challenge,
+						   &challenge->server_challenge,
+						   prevNtHash,
+						   r->in.credentials,
+						   r->out.return_credentials,
+						   client_flags,
+						   client_sid,
+						   negotiate_flags);
+	}
+
+	if (creds == NULL) {
+		TALLOC_FREE(frame);
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	*_creds = creds;
+	TALLOC_FREE(frame);
+	return NT_STATUS_OK;
+}
+
+/*
+ * Do the actual processing of a netr_ServerAuthenticate3 message.
+ * called from dcesrv_netr_ServerAuthenticate3, which handles the logging.
+ */
+static NTSTATUS dcesrv_netr_ServerAuthenticate3_helper(
+	struct dcesrv_call_state *dce_call,
+	TALLOC_CTX *mem_ctx,
+	struct netr_ServerAuthenticate3 *r,
+	const char **trust_account_for_search,
+	const char **trust_account_in_db,
+	struct dom_sid **sid)
+{
+	dcesrv_netr_ServerAuthenticateGenericCallback_fn auth_fn =
+		dcesrv_netr_ServerAuthenticateNTHash_cb;
+
+	return dcesrv_netr_ServerAuthenticateGeneric(dce_call,
+						     mem_ctx,
+						     r,
+						     auth_fn,
+						     trust_account_for_search,
+						     trust_account_in_db,
+						     sid);
+}
+
 /*
  * Log a netr_ServerAuthenticate3 request, and then invoke
  * dcesrv_netr_ServerAuthenticate3_helper to perform the actual processing
@@ -921,8 +1007,13 @@ static NTSTATUS dcesrv_netr_ServerPasswordSet(struct dcesrv_call_state *dce_call
 				       struct netr_ServerPasswordSet *r)
 {
 	struct netlogon_creds_CredentialState *creds;
+	const struct dom_sid *client_sid = NULL;
 	struct ldb_context *sam_ctx;
 	NTSTATUS nt_status;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+
+	dcesrv_call_auth_info(dce_call, &auth_type, &auth_level);
 
 	nt_status = dcesrv_netr_creds_server_step_check(dce_call,
 							mem_ctx,
@@ -930,18 +1021,22 @@ static NTSTATUS dcesrv_netr_ServerPasswordSet(struct dcesrv_call_state *dce_call
 							r->in.credential, r->out.return_authenticator,
 							&creds);
 	NT_STATUS_NOT_OK_RETURN(nt_status);
+	client_sid = &creds->ex->client_sid;
 
 	sam_ctx = dcesrv_samdb_connect_as_system(mem_ctx, dce_call);
 	if (sam_ctx == NULL) {
 		return NT_STATUS_INVALID_SYSTEM_SERVICE;
 	}
 
-	nt_status = netlogon_creds_des_decrypt(creds, r->in.new_password);
+	nt_status = netlogon_creds_decrypt_samr_Password(creds,
+							 r->in.new_password,
+							 auth_type,
+							 auth_level);
 	NT_STATUS_NOT_OK_RETURN(nt_status);
 
 	/* Using the sid for the account as the key, set the password */
 	nt_status = samdb_set_password_sid(sam_ctx, mem_ctx,
-					   creds->sid,
+					   client_sid,
 					   NULL, /* Don't have version */
 					   NULL, /* Don't have plaintext */
 					   r->in.new_password,
@@ -958,6 +1053,7 @@ static NTSTATUS dcesrv_netr_ServerPasswordSet2(struct dcesrv_call_state *dce_cal
 				       struct netr_ServerPasswordSet2 *r)
 {
 	struct netlogon_creds_CredentialState *creds;
+	const struct dom_sid *client_sid = NULL;
 	struct ldb_context *sam_ctx;
 	struct NL_PASSWORD_VERSION version = {};
 	const uint32_t *new_version = NULL;
@@ -967,6 +1063,10 @@ static NTSTATUS dcesrv_netr_ServerPasswordSet2(struct dcesrv_call_state *dce_cal
 	DATA_BLOB dec_blob = data_blob_null;
 	DATA_BLOB enc_blob = data_blob_null;
 	struct samr_CryptPassword password_buf;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+
+	dcesrv_call_auth_info(dce_call, &auth_type, &auth_level);
 
 	nt_status = dcesrv_netr_creds_server_step_check(dce_call,
 							mem_ctx,
@@ -974,6 +1074,7 @@ static NTSTATUS dcesrv_netr_ServerPasswordSet2(struct dcesrv_call_state *dce_cal
 							r->in.credential, r->out.return_authenticator,
 							&creds);
 	NT_STATUS_NOT_OK_RETURN(nt_status);
+	client_sid = &creds->ex->client_sid;
 
 	sam_ctx = dcesrv_samdb_connect_as_system(mem_ctx, dce_call);
 	if (sam_ctx == NULL) {
@@ -983,16 +1084,10 @@ static NTSTATUS dcesrv_netr_ServerPasswordSet2(struct dcesrv_call_state *dce_cal
 	memcpy(password_buf.data, r->in.new_password->data, 512);
 	SIVAL(password_buf.data, 512, r->in.new_password->length);
 
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		nt_status = netlogon_creds_aes_decrypt(creds,
-						       password_buf.data,
-						       516);
-	} else {
-		nt_status = netlogon_creds_arcfour_crypt(creds,
-							 password_buf.data,
-							 516);
-	}
-
+	nt_status = netlogon_creds_decrypt_samr_CryptPassword(creds,
+							      &password_buf,
+							      auth_type,
+							      auth_level);
 	if (!NT_STATUS_IS_OK(nt_status)) {
 		return nt_status;
 	}
@@ -1082,7 +1177,7 @@ static NTSTATUS dcesrv_netr_ServerPasswordSet2(struct dcesrv_call_state *dce_cal
 
 	/* Using the sid for the account as the key, set the password */
 	nt_status = samdb_set_password_sid(sam_ctx, mem_ctx,
-					   creds->sid,
+					   client_sid,
 					   new_version,
 					   &new_password, /* we have plaintext */
 					   NULL,
@@ -1287,7 +1382,9 @@ static NTSTATUS dcesrv_netr_LogonSamLogon_base_call(struct dcesrv_netr_LogonSamL
 
 	nt_status = netlogon_creds_decrypt_samlogon_logon(creds,
 							  r->in.logon_level,
-							  r->in.logon);
+							  r->in.logon,
+							  auth_type,
+							  auth_level);
 	NT_STATUS_NOT_OK_RETURN(nt_status);
 
 	switch (r->in.logon_level) {
@@ -1324,7 +1421,7 @@ static NTSTATUS dcesrv_netr_LogonSamLogon_base_call(struct dcesrv_netr_LogonSamL
 		user_info->netlogon_trust_account.account_name
 			= creds->account_name;
 		user_info->netlogon_trust_account.sid
-			= creds->sid;
+			= &creds->ex->client_sid;
 
 		break;
 	default:
@@ -1583,9 +1680,16 @@ static void dcesrv_netr_LogonSamLogon_base_reply(
 	NTSTATUS status;
 
 	if (NT_STATUS_IS_OK(r->out.result)) {
+		enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+		enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+
+		dcesrv_call_auth_info(state->dce_call, &auth_type, &auth_level);
+
 		status = netlogon_creds_encrypt_samlogon_validation(state->creds,
 								    r->in.validation_level,
-								    r->out.validation);
+								    r->out.validation,
+								    auth_type,
+								    auth_level);
 		if (!NT_STATUS_IS_OK(status)) {
 			DBG_ERR("netlogon_creds_encrypt_samlogon_validation() "
 				"failed - %s\n",
@@ -2381,12 +2485,7 @@ static NTSTATUS dcesrv_netr_LogonGetCapabilities(struct dcesrv_call_state *dce_c
 	case 1:
 		break;
 	case 2:
-		/*
-		 * Until we know the details behind KB5028166
-		 * just return DCERPC_NCA_S_FAULT_INVALID_TAG
-		 * like an unpatched Windows Server.
-		 */
-		FALL_THROUGH;
+		break;
 	default:
 		/*
 		 * There would not be a way to marshall the
@@ -2412,7 +2511,15 @@ static NTSTATUS dcesrv_netr_LogonGetCapabilities(struct dcesrv_call_state *dce_c
 	}
 	NT_STATUS_NOT_OK_RETURN(status);
 
+	switch (r->in.query_level) {
+	case 1:
 		r->out.capabilities->server_capabilities = creds->negotiate_flags;
+		break;
+	case 2:
+		r->out.capabilities->requested_flags =
+					creds->ex->client_requested_flags;
+		break;
+	}
 
 	return NT_STATUS_OK;
 }
@@ -2618,17 +2725,18 @@ static NTSTATUS dcesrv_netr_LogonGetDomainInfo(struct dcesrv_call_state *dce_cal
 	TALLOC_CTX *mem_ctx, struct netr_LogonGetDomainInfo *r)
 {
 	struct netlogon_creds_CredentialState *creds;
-	const char * const trusts_attrs[] = {
-		"securityIdentifier",
+	const struct dom_sid *client_sid = NULL;
+	static const char *const trusts_attrs[] = {"securityIdentifier",
 						   "flatName",
 						   "trustPartner",
 						   "trustAttributes",
 						   "trustDirection",
 						   "trustType",
-		NULL
-	};
-	const char * const attrs2[] = { "sAMAccountName", "dNSHostName",
-		"msDS-SupportedEncryptionTypes", NULL };
+						   NULL};
+	static const char *const attrs2[] = {"sAMAccountName",
+					     "dNSHostName",
+					     "msDS-SupportedEncryptionTypes",
+					     NULL};
 	const char *sam_account_name, *old_dns_hostname;
 	struct ldb_context *sam_ctx;
 	const struct GUID *our_domain_guid = NULL;
@@ -2666,6 +2774,7 @@ static NTSTATUS dcesrv_netr_LogonGetDomainInfo(struct dcesrv_call_state *dce_cal
 		talloc_free(frame);
 	}
 	NT_STATUS_NOT_OK_RETURN(status);
+	client_sid = &creds->ex->client_sid;
 
 	/* We want to avoid connecting as system. */
 	sam_ctx = dcesrv_samdb_connect_as_user(mem_ctx, dce_call);
@@ -2682,7 +2791,7 @@ static NTSTATUS dcesrv_netr_LogonGetDomainInfo(struct dcesrv_call_state *dce_cal
 
 		/* Prepares the workstation DN */
 		workstation_dn = ldb_dn_new_fmt(mem_ctx, sam_ctx, "<SID=%s>",
-						dom_sid_string(mem_ctx, creds->sid));
+						dom_sid_string(mem_ctx, client_sid));
 		NT_STATUS_HAVE_NO_MEMORY(workstation_dn);
 
 		/* Get the workstation's session info from the database. */
@@ -2991,14 +3100,18 @@ static NTSTATUS dcesrv_netr_ServerPasswordGet(struct dcesrv_call_state *dce_call
 
 static bool sam_rodc_access_check(struct ldb_context *sam_ctx,
 				  TALLOC_CTX *mem_ctx,
-				  struct dom_sid *user_sid,
+				  const struct dom_sid *user_sid,
 				  struct ldb_dn *obj_dn)
 {
-	const char *rodc_attrs[] = { "msDS-NeverRevealGroup",
+	static const char *rodc_attrs[] = {"msDS-NeverRevealGroup",
 					   "msDS-RevealOnDemandGroup",
 					   "userAccountControl",
-				     NULL };
-	const char *obj_attrs[] = { "tokenGroups", "objectSid", "UserAccountControl", "msDS-KrbTgtLinkBL", NULL };
+					   NULL};
+	static const char *obj_attrs[] = {"tokenGroups",
+					  "objectSid",
+					  "UserAccountControl",
+					  "msDS-KrbTgtLinkBL",
+					  NULL};
 	struct ldb_dn *rodc_dn;
 	int ret;
 	struct ldb_result *rodc_res = NULL, *obj_res = NULL;
@@ -3042,11 +3155,16 @@ static NTSTATUS dcesrv_netr_NetrLogonSendToSam(struct dcesrv_call_state *dce_cal
 					       struct netr_NetrLogonSendToSam *r)
 {
 	struct netlogon_creds_CredentialState *creds;
+	const struct dom_sid *client_sid = NULL;
 	struct ldb_context *sam_ctx;
 	NTSTATUS nt_status;
 	DATA_BLOB decrypted_blob;
 	enum ndr_err_code ndr_err;
 	struct netr_SendToSamBase base_msg = { 0 };
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+
+	dcesrv_call_auth_info(dce_call, &auth_type, &auth_level);
 
 	nt_status = dcesrv_netr_creds_server_step_check(dce_call,
 							mem_ctx,
@@ -3056,6 +3174,7 @@ static NTSTATUS dcesrv_netr_NetrLogonSendToSam(struct dcesrv_call_state *dce_cal
 							&creds);
 
 	NT_STATUS_NOT_OK_RETURN(nt_status);
+	client_sid = &creds->ex->client_sid;
 
 	switch (creds->secure_channel_type) {
 	case SEC_CHAN_BDC:
@@ -3078,15 +3197,12 @@ static NTSTATUS dcesrv_netr_NetrLogonSendToSam(struct dcesrv_call_state *dce_cal
 	}
 
 	/* Buffer is meant to be 16-bit aligned */
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		nt_status = netlogon_creds_aes_decrypt(creds,
+
+	nt_status = netlogon_creds_decrypt_SendToSam(creds,
 						     r->in.opaque_buffer,
-						       r->in.buffer_len);
-	} else {
-		nt_status = netlogon_creds_arcfour_crypt(creds,
-							 r->in.opaque_buffer,
-							 r->in.buffer_len);
-	}
+						     r->in.buffer_len,
+						     auth_type,
+						     auth_level);
 	if (!NT_STATUS_IS_OK(nt_status)) {
 		return nt_status;
 	}
@@ -3127,7 +3243,7 @@ static NTSTATUS dcesrv_netr_NetrLogonSendToSam(struct dcesrv_call_state *dce_cal
 		}
 
 		if (creds->secure_channel_type == SEC_CHAN_RODC &&
-		    !sam_rodc_access_check(sam_ctx, mem_ctx, creds->sid, dn)) {
+		    !sam_rodc_access_check(sam_ctx, mem_ctx, client_sid, dn)) {
 			DEBUG(1, ("Client asked to reset bad password on "
 				  "an arbitrary user: %s\n",
 				  ldb_dn_get_linearized(dn)));
@@ -3938,9 +4054,13 @@ static WERROR fill_trusted_domains_array(TALLOC_CTX *mem_ctx,
 {
 	struct ldb_dn *system_dn;
 	struct ldb_message **dom_res = NULL;
-	const char *trust_attrs[] = { "flatname", "trustPartner",
-				      "securityIdentifier", "trustDirection",
-				      "trustType", "trustAttributes", NULL };
+	static const char *trust_attrs[] = {"flatname",
+					    "trustPartner",
+					    "securityIdentifier",
+					    "trustDirection",
+					    "trustType",
+					    "trustAttributes",
+					    NULL};
 	uint32_t n;
 	int i;
 	int ret;
@@ -4408,6 +4528,7 @@ static NTSTATUS dcesrv_netr_ServerGetTrustInfo(struct dcesrv_call_state *dce_cal
 {
 	struct loadparm_context *lp_ctx = dce_call->conn->dce_ctx->lp_ctx;
 	struct netlogon_creds_CredentialState *creds = NULL;
+	const struct dom_sid *client_sid = NULL;
 	struct ldb_context *sam_ctx = NULL;
 	const char * const attrs[] = {
 		"unicodePwd",
@@ -4429,6 +4550,10 @@ static NTSTATUS dcesrv_netr_ServerGetTrustInfo(struct dcesrv_call_state *dce_cal
 		NULL
 	};
 	struct netr_TrustInfo *trust_info = NULL;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+
+	dcesrv_call_auth_info(dce_call, &auth_type, &auth_level);
 
 	ZERO_STRUCTP(r->out.new_owf_password);
 	ZERO_STRUCTP(r->out.old_owf_password);
@@ -4442,6 +4567,7 @@ static NTSTATUS dcesrv_netr_ServerGetTrustInfo(struct dcesrv_call_state *dce_cal
 	if (!NT_STATUS_IS_OK(nt_status)) {
 		return nt_status;
 	}
+	client_sid = &creds->ex->client_sid;
 
 	/* TODO: check r->in.server_name is our name */
 
@@ -4462,7 +4588,7 @@ static NTSTATUS dcesrv_netr_ServerGetTrustInfo(struct dcesrv_call_state *dce_cal
 		return NT_STATUS_INVALID_SYSTEM_SERVICE;
 	}
 
-	asid = ldap_encode_ndr_dom_sid(mem_ctx, creds->sid);
+	asid = ldap_encode_ndr_dom_sid(mem_ctx, client_sid);
 	if (asid == NULL) {
 		return NT_STATUS_NO_MEMORY;
 	}
@@ -4545,14 +4671,20 @@ static NTSTATUS dcesrv_netr_ServerGetTrustInfo(struct dcesrv_call_state *dce_cal
 
 	if (curNtHash != NULL) {
 		*r->out.new_owf_password = *curNtHash;
-		nt_status = netlogon_creds_des_encrypt(creds, r->out.new_owf_password);
+		nt_status = netlogon_creds_encrypt_samr_Password(creds,
+						r->out.new_owf_password,
+						auth_type,
+						auth_level);
 		if (!NT_STATUS_IS_OK(nt_status)) {
 			return nt_status;
 		}
 	}
 	if (prevNtHash != NULL) {
 		*r->out.old_owf_password = *prevNtHash;
-		nt_status = netlogon_creds_des_encrypt(creds, r->out.old_owf_password);
+		nt_status = netlogon_creds_encrypt_samr_Password(creds,
+						r->out.old_owf_password,
+						auth_type,
+						auth_level);
 		if (!NT_STATUS_IS_OK(nt_status)) {
 			return nt_status;
 		}
@@ -4617,6 +4749,7 @@ static NTSTATUS dcesrv_netr_DsrUpdateReadOnlyServerDnsRecords(struct dcesrv_call
 	struct tevent_req *subreq;
 	struct imessaging_context *imsg_ctx =
 		dcesrv_imessaging_context(dce_call->conn);
+	struct dom_sid *client_sid = NULL;
 
 	nt_status = dcesrv_netr_creds_server_step_check(dce_call,
 							mem_ctx,
@@ -4625,6 +4758,7 @@ static NTSTATUS dcesrv_netr_DsrUpdateReadOnlyServerDnsRecords(struct dcesrv_call
 							r->out.return_authenticator,
 							&creds);
 	NT_STATUS_NOT_OK_RETURN(nt_status);
+	client_sid = &creds->ex->client_sid;
 
 	if (creds->secure_channel_type != SEC_CHAN_RODC) {
 		return NT_STATUS_ACCESS_DENIED;
@@ -4638,7 +4772,7 @@ static NTSTATUS dcesrv_netr_DsrUpdateReadOnlyServerDnsRecords(struct dcesrv_call
 	st->r2 = talloc_zero(st, struct dnsupdate_RODC);
 	NT_STATUS_HAVE_NO_MEMORY(st->r2);
 
-	st->r2->in.dom_sid = creds->sid;
+	st->r2->in.dom_sid = client_sid;
 	st->r2->in.site_name = r->in.site_name;
 	st->r2->in.dns_ttl = r->in.dns_ttl;
 	st->r2->in.dns_names = r->in.dns_names;
@@ -4667,6 +4801,36 @@ static NTSTATUS dcesrv_netr_DsrUpdateReadOnlyServerDnsRecords(struct dcesrv_call
 	return NT_STATUS_OK;
 }
 
+DCESRV_NOT_USED_ON_WIRE(netr_Opnum49NotUsedOnWire)
+DCESRV_NOT_USED_ON_WIRE(netr_Opnum50NotUsedOnWire)
+DCESRV_NOT_USED_ON_WIRE(netr_Opnum51NotUsedOnWire)
+DCESRV_NOT_USED_ON_WIRE(netr_Opnum52NotUsedOnWire)
+DCESRV_NOT_USED_ON_WIRE(netr_Opnum53NotUsedOnWire)
+
+/*
+  netr_ChainSetClientAttributes
+ */
+static NTSTATUS dcesrv_netr_ChainSetClientAttributes(struct dcesrv_call_state *dce_call,
+						     TALLOC_CTX *mem_ctx,
+						     struct netr_ChainSetClientAttributes *r)
+{
+	DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
+}
+
+DCESRV_NOT_USED_ON_WIRE(netr_Opnum55NotUsedOnWire)
+DCESRV_NOT_USED_ON_WIRE(netr_Opnum56NotUsedOnWire)
+DCESRV_NOT_USED_ON_WIRE(netr_Opnum57NotUsedOnWire)
+DCESRV_NOT_USED_ON_WIRE(netr_Opnum58NotUsedOnWire)
+
+/*
+  netr_ServerAuthenticateKerberos
+ */
+static NTSTATUS dcesrv_netr_ServerAuthenticateKerberos(struct dcesrv_call_state *dce_call,
+						       TALLOC_CTX *mem_ctx,
+						       struct netr_ServerAuthenticateKerberos *r)
+{
+	DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
+}
 
 /* include the generated boilerplate */
 #include "librpc/gen_ndr/ndr_netlogon_s.c"

source4/torture/ntp/ntp_signd.c

@@ -119,6 +119,7 @@ static bool test_ntp_signd(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2, 
 					   pwhash, &credentials3,
+					   negotiate_flags,
 					   negotiate_flags);
 	
 	torture_assert(tctx, creds != NULL, "memory allocation");

source4/torture/rpc/forest_trust.c

@@ -533,6 +533,8 @@ static bool test_validate_trust(struct torture_context *tctx,
 	struct samr_Password *old_nt_hash;
 	char *dummy;
 	uint32_t trust_attributes = LSA_TRUST_ATTRIBUTE_FOREST_TRANSITIVE;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
 
 	status = dcerpc_parse_binding(tctx, binding, &b);
 	torture_assert_ntstatus_ok(tctx, status, "Bad binding string");
@@ -608,8 +610,19 @@ static bool test_validate_trust(struct torture_context *tctx,
 	old_nt_hash = cli_credentials_get_old_nt_hash(credentials, tctx);
 	torture_assert(tctx, old_nt_hash != NULL, "cli_credentials_get_old_nt_hash()");
 
-	netlogon_creds_des_decrypt(creds, &new_owf_password);
-	netlogon_creds_des_decrypt(creds, &old_owf_password);
+	dcerpc_binding_handle_auth_info(p->binding_handle,
+					&auth_type,
+					&auth_level);
+	status = netlogon_creds_decrypt_samr_Password(creds,
+						      &new_owf_password,
+						      auth_type,
+						      auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "decrypt_samr_Password");
+	status = netlogon_creds_decrypt_samr_Password(creds,
+						      &old_owf_password,
+						      auth_type,
+						      auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "decrypt_samr_Password");
 
 	dump_data(1, new_owf_password.hash, 16);
 	dump_data(1, new_nt_hash->hash, 16);

source4/torture/rpc/lsa.c

@@ -3064,6 +3064,7 @@ static bool check_pw_with_ServerAuthenticate3(struct dcerpc_pipe *p,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   new_password, &credentials3,
+					   negotiate_flags,
 					   negotiate_flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -3089,6 +3090,7 @@ static bool check_pw_with_ServerAuthenticate3(struct dcerpc_pipe *p,
 						   a.in.secure_channel_type,
 						   &credentials1, &credentials2,
 						   old_password, &credentials3,
+						   negotiate_flags,
 						   negotiate_flags);
 
 		torture_assert(tctx, creds != NULL, "memory allocation");
@@ -4481,6 +4483,8 @@ static bool check_dom_trust_pw(struct dcerpc_pipe *p,
 	struct tsocket_address *dest_addr;
 	struct cldap_socket *cldap;
 	struct cldap_netlogon cldap1;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
 
 	incoming_creds = cli_credentials_init(tctx);
 	torture_assert(tctx, incoming_creds, "cli_credentials_init");
@@ -4636,15 +4640,14 @@ static bool check_dom_trust_pw(struct dcerpc_pipe *p,
 	netlogon_creds_client_authenticator(creds, &req_auth);
 	ZERO_STRUCT(rep_auth);
 
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		netlogon_creds_aes_encrypt(creds,
-					   samr_crypt_password.data,
-					   516);
-	} else {
-		netlogon_creds_arcfour_crypt(creds,
-					     samr_crypt_password.data,
-					     516);
-	}
+	dcerpc_binding_handle_auth_info(p2->binding_handle,
+					&auth_type,
+					&auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &samr_crypt_password,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 
 	memcpy(netr_crypt_password.data,
 	       samr_crypt_password.data, 512);

source4/torture/rpc/netlogon.c

@@ -180,6 +180,7 @@ bool test_SetupCredentials(struct dcerpc_pipe *p, struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   mach_password, &credentials3,
+					   0,
 					   0);
 	torture_assert(tctx, creds != NULL, "memory allocation");
 
@@ -251,6 +252,7 @@ bool test_SetupCredentials2ex(struct dcerpc_pipe *p, struct torture_context *tct
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   mach_password, &credentials3,
+					   negotiate_flags,
 					   negotiate_flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -349,6 +351,7 @@ bool test_SetupCredentials3(struct dcerpc_pipe *p, struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   negotiate_flags,
 					   negotiate_flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -421,6 +424,7 @@ bool test_SetupCredentialsDowngrade(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   negotiate_flags,
 					   negotiate_flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -437,6 +441,7 @@ bool test_SetupCredentialsDowngrade(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   negotiate_flags,
 					   negotiate_flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -541,6 +546,7 @@ static bool test_ServerReqChallenge(
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   mach_password, &credentials3,
+					   in_negotiate_flags,
 					   in_negotiate_flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -618,6 +624,7 @@ static bool test_ServerReqChallenge_zero_challenge(
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   mach_password, &credentials3,
+					   in_negotiate_flags,
 					   in_negotiate_flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -702,6 +709,7 @@ static bool test_ServerReqChallenge_5_repeats(
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   mach_password, &credentials3,
+					   in_negotiate_flags,
 					   in_negotiate_flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -788,6 +796,7 @@ static bool test_ServerReqChallenge_4_repeats(
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   mach_password, &credentials3,
+					   in_negotiate_flags,
 					   in_negotiate_flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -881,6 +890,7 @@ static bool test_ServerAuthenticate2_encrypts_to_zero(
 			&credentials2,
 			mach_password,
 			&credentials3,
+			flags,
 			flags);
 
 		torture_assert(tctx, creds != NULL, "memory allocation");
@@ -922,6 +932,9 @@ static bool test_SetPassword(struct torture_context *tctx,
 	struct netr_Authenticator credential, return_authenticator;
 	struct samr_Password new_password;
 	struct dcerpc_binding_handle *b = p->binding_handle;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+	NTSTATUS status;
 
 	if (!test_SetupCredentials(p, tctx, machine_credentials, &creds)) {
 		return false;
@@ -938,7 +951,12 @@ static bool test_SetPassword(struct torture_context *tctx,
 	password = generate_random_password(tctx, 8, 255);
 	E_md4hash(password, new_password.hash);
 
-	netlogon_creds_des_encrypt(creds, &new_password);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_Password(creds,
+						      &new_password,
+						      auth_type,
+						      auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_Password");
 
 	torture_comment(tctx, "Testing ServerPasswordSet on machine account\n");
 	torture_comment(tctx, "Changing machine account password to '%s'\n",
@@ -997,6 +1015,9 @@ static bool test_SetPassword_flags(struct torture_context *tctx,
 	struct samr_Password new_password;
 	struct dcerpc_pipe *p = NULL;
 	struct dcerpc_binding_handle *b = NULL;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	if (!test_SetupCredentials2(p1, tctx, negotiate_flags,
 				    machine_credentials,
@@ -1021,7 +1042,12 @@ static bool test_SetPassword_flags(struct torture_context *tctx,
 	password = generate_random_password(tctx, 8, 255);
 	E_md4hash(password, new_password.hash);
 
-	netlogon_creds_des_encrypt(creds, &new_password);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_Password(creds,
+						      &new_password,
+						      auth_type,
+						      auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_Password");
 
 	torture_comment(tctx, "Testing ServerPasswordSet on machine account\n");
 	torture_comment(tctx, "Changing machine account password to '%s'\n",
@@ -1102,6 +1128,9 @@ static bool test_SetPassword2_with_flags(struct torture_context *tctx,
 	struct netr_CryptPassword new_password;
 	struct dcerpc_pipe *p = NULL;
 	struct dcerpc_binding_handle *b = NULL;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	if (!test_SetupCredentials2(p1, tctx, flags, machine_credentials,
 				    cli_credentials_get_secure_channel_type(machine_credentials),
@@ -1124,11 +1153,12 @@ static bool test_SetPassword2_with_flags(struct torture_context *tctx,
 
 	password = generate_random_password(tctx, 8, 255);
 	encode_pw_buffer(password_buf.data, password, STR_UNICODE);
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		netlogon_creds_aes_encrypt(creds, password_buf.data, 516);
-	} else {
-		netlogon_creds_arcfour_crypt(creds, password_buf.data, 516);
-	}
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 
 	memcpy(new_password.data, password_buf.data, 512);
 	new_password.length = IVAL(password_buf.data, 512);
@@ -1158,11 +1188,12 @@ static bool test_SetPassword2_with_flags(struct torture_context *tctx,
 	 */
 	password = "";
 	encode_pw_buffer(password_buf.data, password, STR_UNICODE);
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		netlogon_creds_aes_encrypt(creds, password_buf.data, 516);
-	} else {
-		netlogon_creds_arcfour_crypt(creds, password_buf.data, 516);
-	}
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 	memcpy(new_password.data, password_buf.data, 512);
 	new_password.length = IVAL(password_buf.data, 512);
 
@@ -1185,11 +1216,12 @@ static bool test_SetPassword2_with_flags(struct torture_context *tctx,
 	/* now try a random password */
 	password = generate_random_password(tctx, 8, 255);
 	encode_pw_buffer(password_buf.data, password, STR_UNICODE);
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		netlogon_creds_aes_encrypt(creds, password_buf.data, 516);
-	} else {
-		netlogon_creds_arcfour_crypt(creds, password_buf.data, 516);
-	}
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 	memcpy(new_password.data, password_buf.data, 512);
 	new_password.length = IVAL(password_buf.data, 512);
 
@@ -1236,11 +1268,12 @@ static bool test_SetPassword2_with_flags(struct torture_context *tctx,
 	/* now try a random stream of bytes for a password */
 	set_pw_in_buffer(password_buf.data, &new_random_pass);
 
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		netlogon_creds_aes_encrypt(creds, password_buf.data, 516);
-	} else {
-		netlogon_creds_arcfour_crypt(creds, password_buf.data, 516);
-	}
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 
 	memcpy(new_password.data, password_buf.data, 512);
 	new_password.length = IVAL(password_buf.data, 512);
@@ -1289,6 +1322,9 @@ static bool test_SetPassword2_encrypted_to_all_zeros(
 	struct netr_CryptPassword new_password;
 	struct dcerpc_pipe *p = NULL;
 	struct dcerpc_binding_handle *b = NULL;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	if (!test_ServerAuthenticate2_encrypts_to_zero(
 		tctx,
@@ -1328,7 +1364,12 @@ static bool test_SetPassword2_encrypted_to_all_zeros(
 	if (!(creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES)) {
 		torture_fail(tctx, "NETLOGON_NEG_SUPPORTS_AES not set");
 	}
-	netlogon_creds_aes_encrypt(creds, password_buf.data, 516);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 	if(!all_zero(password_buf.data, 516)) {
 		torture_fail(tctx, "Password did not encrypt to all zeros\n");
 	}
@@ -1375,6 +1416,9 @@ static bool test_SetPassword2_password_encrypts_to_zero(
 	struct netr_CryptPassword new_password;
 	struct dcerpc_pipe *p = NULL;
 	struct dcerpc_binding_handle *b = NULL;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	if (!test_ServerAuthenticate2_encrypts_to_zero(
 		tctx,
@@ -1415,7 +1459,12 @@ static bool test_SetPassword2_password_encrypts_to_zero(
 	if (!(creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES)) {
 		torture_fail(tctx, "NETLOGON_NEG_SUPPORTS_AES not set");
 	}
-	netlogon_creds_aes_encrypt(creds, password_buf.data, 516);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 
 	memcpy(new_password.data, password_buf.data, 512);
 	new_password.length = IVAL(password_buf.data, 512);
@@ -1451,6 +1500,9 @@ static bool test_SetPassword2_confounder(
 	struct netr_CryptPassword new_password;
 	struct dcerpc_pipe *p = NULL;
 	struct dcerpc_binding_handle *b = NULL;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	if (!test_ServerAuthenticate2_encrypts_to_zero(
 		tctx,
@@ -1492,7 +1544,12 @@ static bool test_SetPassword2_confounder(
 	if (!(creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES)) {
 		torture_fail(tctx, "NETLOGON_NEG_SUPPORTS_AES not set");
 	}
-	netlogon_creds_aes_encrypt(creds, password_buf.data, 516);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 
 	memcpy(new_password.data, password_buf.data, 512);
 	new_password.length = IVAL(password_buf.data, 512);
@@ -1528,6 +1585,9 @@ static bool test_SetPassword2_all_zeros(
 	struct dcerpc_pipe *p = NULL;
 	struct dcerpc_binding_handle *b = NULL;
 	uint32_t flags = NETLOGON_NEG_AUTH2_ADS_FLAGS; /* no AES desired here */
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	if (!test_SetupCredentials2(
 		p1,
@@ -1566,7 +1626,12 @@ static bool test_SetPassword2_all_zeros(
 	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
 		torture_fail(tctx, "NETLOGON_NEG_SUPPORTS_AES enabled\n");
 	}
-	netlogon_creds_arcfour_crypt(creds, password_buf.data, 516);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 
 	memcpy(new_password.data, password_buf.data, 512);
 	new_password.length = IVAL(password_buf.data, 512);
@@ -1605,6 +1670,9 @@ static bool test_SetPassword2_maximum_length_password(
 	struct dcerpc_binding_handle *b = NULL;
 	uint32_t flags = NETLOGON_NEG_AUTH2_ADS_FLAGS | NETLOGON_NEG_SUPPORTS_AES;
 	DATA_BLOB new_random_pass = data_blob_null;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	if (!test_SetupCredentials2(
 		p1,
@@ -1642,11 +1710,12 @@ static bool test_SetPassword2_maximum_length_password(
 	new_random_pass = netlogon_very_rand_pass(tctx, 256);
 	set_pw_in_buffer(password_buf.data, &new_random_pass);
 	SIVAL(password_buf.data, 512, 512);
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		netlogon_creds_aes_encrypt(creds, password_buf.data, 516);
-	} else {
-		netlogon_creds_arcfour_crypt(creds, password_buf.data, 516);
-	}
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 
 	memcpy(new_password.data, password_buf.data, 512);
 	new_password.length = IVAL(password_buf.data, 512);
@@ -1687,6 +1756,9 @@ static bool test_SetPassword2_all_zero_password(
 	struct dcerpc_pipe *p = NULL;
 	struct dcerpc_binding_handle *b = NULL;
 	uint32_t flags = NETLOGON_NEG_AUTH2_ADS_FLAGS; /* no AES desired here */
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+	NTSTATUS status;
 
 	if (!test_SetupCredentials2(
 		p1,
@@ -1726,7 +1798,12 @@ static bool test_SetPassword2_all_zero_password(
 	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
 		torture_fail(tctx, "NETLOGON_NEG_SUPPORTS_AES set");
 	}
-	netlogon_creds_arcfour_crypt(creds, password_buf.data, 516);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samr_CryptPassword(creds,
+							   &password_buf,
+							   auth_type,
+							   auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_CryptPassword");
 
 	memcpy(new_password.data, password_buf.data, 512);
 	new_password.length = IVAL(password_buf.data, 512);
@@ -2039,6 +2116,7 @@ bool test_netlogon_ops(struct dcerpc_pipe *p, struct torture_context *tctx,
 */
 bool test_netlogon_capabilities(struct dcerpc_pipe *p, struct torture_context *tctx,
 				struct cli_credentials *credentials,
+				uint32_t requested_flags,
 				struct netlogon_creds_CredentialState *creds)
 {
 	NTSTATUS status;
@@ -2109,10 +2187,10 @@ bool test_netlogon_capabilities(struct dcerpc_pipe *p, struct torture_context *t
 	netlogon_creds_client_authenticator(&tmp_creds, &auth);
 
 	status = dcerpc_netr_LogonGetCapabilities_r(b, tctx, &r);
-	torture_assert_ntstatus_ok(tctx, status, "LogonGetCapabilities failed");
-	if (NT_STATUS_EQUAL(r.out.result, NT_STATUS_NOT_IMPLEMENTED)) {
-		return true;
-	}
+	torture_assert_ntstatus_ok(tctx, status,
+			"LogonGetCapabilities query_level=1 failed");
+	torture_assert_ntstatus_ok(tctx, r.out.result,
+			"LogonGetCapabilities query_level=1 failed");
 
 	*creds = tmp_creds;
 
@@ -2140,15 +2218,10 @@ bool test_netlogon_capabilities(struct dcerpc_pipe *p, struct torture_context *t
 	netlogon_creds_client_authenticator(&tmp_creds, &auth);
 
 	status = dcerpc_netr_LogonGetCapabilities_r(b, tctx, &r);
-	if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE)) {
-		/*
-		 * an server without KB5028166 returns
-		 * DCERPC_NCA_S_FAULT_INVALID_TAG =>
-		 * NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
-		 */
-		return true;
-	}
-	torture_assert_ntstatus_ok(tctx, status, "LogonGetCapabilities query_level=2 failed");
+	torture_assert_ntstatus_ok(tctx, status,
+			"LogonGetCapabilities query_level=2 failed");
+	torture_assert_ntstatus_ok(tctx, r.out.result,
+			"LogonGetCapabilities query_level=2 failed");
 
 	*creds = tmp_creds;
 
@@ -2156,8 +2229,8 @@ bool test_netlogon_capabilities(struct dcerpc_pipe *p, struct torture_context *t
 							 &r.out.return_authenticator->cred),
 		       "Credential chaining failed");
 
-	torture_assert_int_equal(tctx, creds->negotiate_flags,
-				 capabilities.server_capabilities,
+	torture_assert_int_equal(tctx, requested_flags,
+				 capabilities.requested_flags,
 				 "negotiate flags");
 
 	return true;
@@ -2276,6 +2349,7 @@ static bool test_ServerReqChallengeGlobal(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -2365,6 +2439,7 @@ static bool test_ServerReqChallengeReuseGlobal(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -2382,6 +2457,7 @@ static bool test_ServerReqChallengeReuseGlobal(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert_ntstatus_ok(tctx, dcerpc_netr_ServerAuthenticate3_r(b3, tctx, &a),
@@ -2454,6 +2530,7 @@ static bool test_ServerReqChallengeReuseGlobal2(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -2471,6 +2548,7 @@ static bool test_ServerReqChallengeReuseGlobal2(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert_ntstatus_ok(tctx, dcerpc_netr_ServerAuthenticate3_r(b2, tctx, &a),
@@ -2544,6 +2622,7 @@ static bool test_ServerReqChallengeReuseGlobal3(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -2561,6 +2640,7 @@ static bool test_ServerReqChallengeReuseGlobal3(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -2659,6 +2739,7 @@ static bool test_ServerReqChallengeReuseGlobal4(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -2676,6 +2757,7 @@ static bool test_ServerReqChallengeReuseGlobal4(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert_ntstatus_ok(tctx, dcerpc_netr_ServerAuthenticate3_r(b1, tctx, &a),
@@ -2735,6 +2817,7 @@ static bool test_ServerReqChallengeReuse(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -2752,6 +2835,7 @@ static bool test_ServerReqChallengeReuse(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert_ntstatus_ok(tctx, dcerpc_netr_ServerAuthenticate3_r(b, tctx, &a),
@@ -2766,6 +2850,7 @@ static bool test_ServerReqChallengeReuse(struct torture_context *tctx,
 					   a.in.secure_channel_type,
 					   &credentials1, &credentials2,
 					   &mach_password, &credentials3,
+					   flags,
 					   flags);
 
 	torture_assert(tctx, creds != NULL, "memory allocation");
@@ -4969,6 +5054,9 @@ static bool test_netr_ServerGetTrustInfo_flags(struct torture_context *tctx,
 	struct dcerpc_binding_handle *b = NULL;
 
 	struct samr_Password nt_hash;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+	NTSTATUS status;
 
 	if (!test_SetupCredentials3(p1, tctx, negotiate_flags,
 				    machine_credentials, &creds)) {
@@ -5000,7 +5088,17 @@ static bool test_netr_ServerGetTrustInfo_flags(struct torture_context *tctx,
 
 	E_md4hash(cli_credentials_get_password(machine_credentials), nt_hash.hash);
 
-	netlogon_creds_des_decrypt(creds, &new_owf_password);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_decrypt_samr_Password(creds,
+						      &new_owf_password,
+						      auth_type,
+						      auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "decrypt_samr_Password");
+	status = netlogon_creds_decrypt_samr_Password(creds,
+						      &old_owf_password,
+						      auth_type,
+						      auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "decrypt_samr_Password");
 
 	dump_data(1, new_owf_password.hash, 16);
 	dump_data(1, nt_hash.hash, 16);

source4/torture/rpc/netlogon_crypto.c

@@ -124,6 +124,7 @@ static bool test_ServerAuth3Crypto(struct dcerpc_pipe *p,
 						 &netr_creds2,
 						 &machine_password,
 						 &netr_creds3,
+						 negotiate_flags,
 						 negotiate_flags);
 	GNUTLS_FIPS140_SET_STRICT_MODE();
 	/* Test that we fail to encrypt with RC4 */
@@ -152,6 +153,8 @@ static bool test_ServerAuth3Crypto(struct dcerpc_pipe *p,
 					      a.out.result,
 					      NT_STATUS_DOWNGRADE_DETECTED,
 					      "Unexpected status code");
+		torture_assert_int_equal(tctx, negotiate_flags, 0,
+					 "NT_STATUS_DOWNGRADE_DETECTED...");
 		return false;
 	}
 	torture_assert_ntstatus_ok(tctx,
@@ -167,8 +170,8 @@ static bool test_ServerAuth3Crypto(struct dcerpc_pipe *p,
 
 	if (!weak_crypto_allowed) {
 		torture_assert(tctx,
-			       (negotiate_flags & NETLOGON_NEG_ARCFOUR) == 0,
-			       "Server should not announce RC4 support");
+			       (negotiate_flags & NETLOGON_NEG_SUPPORTS_AES),
+			       "Server negotiate AES support");
 	}
 
 	/* Prove that requesting a challenge again won't break it */

source4/torture/rpc/remote_pac.c

@@ -406,6 +406,9 @@ static bool netlogon_validate_pac(struct torture_context *tctx,
 	struct dcerpc_binding_handle *b = NULL;
 	enum ndr_err_code ndr_err;
 	DATA_BLOB payload, pac_wrapped;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
+	NTSTATUS status;
 
 	if (!test_SetupCredentials2(p1, tctx, negotiate_flags,
 				    server_creds, secure_channel_type,
@@ -437,11 +440,6 @@ static bool netlogon_validate_pac(struct torture_context *tctx,
 	torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 
 	torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		netlogon_creds_aes_encrypt(creds, pac_wrapped.data, pac_wrapped.length);
-	} else {
-		netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
-	}
 
 	generic.length = pac_wrapped.length;
 	generic.data = pac_wrapped.data;
@@ -471,6 +469,14 @@ static bool netlogon_validate_pac(struct torture_context *tctx,
 	r.out.authoritative = &authoritative;
 	r.out.return_authenticator = &return_authenticator;
 
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samlogon_logon(creds,
+						       r.in.logon_level,
+						       r.in.logon,
+						       auth_type,
+						       auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samlogon_logon");
+
 	torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogon_r(b, tctx, &r),
 		"LogonSamLogon failed");
 
@@ -546,11 +552,6 @@ static bool netlogon_validate_pac(struct torture_context *tctx,
 	torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 
 	torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		netlogon_creds_aes_encrypt(creds, pac_wrapped.data, pac_wrapped.length);
-	} else {
-		netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
-	}
 
 	generic.length = pac_wrapped.length;
 	generic.data = pac_wrapped.data;
@@ -567,6 +568,14 @@ static bool netlogon_validate_pac(struct torture_context *tctx,
 	r.in.computer_name = cli_credentials_get_workstation(server_creds);
 	r.in.validation_level = NetlogonValidationGenericInfo2;
 
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samlogon_logon(creds,
+						       r.in.logon_level,
+						       r.in.logon,
+						       auth_type,
+						       auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samlogon_logon");
+
 	torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogon_r(b, tctx, &r),
 		"LogonSamLogon failed");
 
@@ -598,11 +607,6 @@ static bool netlogon_validate_pac(struct torture_context *tctx,
 	torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 
 	torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
-	if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-		netlogon_creds_aes_encrypt(creds, pac_wrapped.data, pac_wrapped.length);
-	} else {
-		netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
-	}
 
 	generic.length = pac_wrapped.length;
 	generic.data = pac_wrapped.data;
@@ -619,6 +623,14 @@ static bool netlogon_validate_pac(struct torture_context *tctx,
 	r.in.computer_name = cli_credentials_get_workstation(server_creds);
 	r.in.validation_level = NetlogonValidationGenericInfo2;
 
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samlogon_logon(creds,
+						       r.in.logon_level,
+						       r.in.logon,
+						       auth_type,
+						       auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samlogon_logon");
+
 	torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogon_r(b, tctx, &r),
 		"LogonSamLogon failed");
 

source4/torture/rpc/samba3rpc.c

@@ -1091,7 +1091,9 @@ static bool auth2(struct torture_context *tctx,
 						 a.in.secure_channel_type,
 						 r.in.credentials,
 						 r.out.return_credentials, &mach_pw,
-						 &netr_cred, negotiate_flags);
+						 &netr_cred,
+						 negotiate_flags,
+						 negotiate_flags);
 	torture_assert(tctx, (creds_state != NULL), "memory allocation failed");
 
 	status = dcerpc_netr_ServerAuthenticate2_r(net_handle, mem_ctx, &a);
@@ -1303,6 +1305,8 @@ static bool schan(struct torture_context *tctx,
 		struct netlogon_creds_CredentialState *creds_state;
 		struct netr_Authenticator credential, return_authenticator;
 		struct samr_Password new_password;
+		enum dcerpc_AuthType auth_type;
+		enum dcerpc_AuthLevel auth_level;
 
 		s.in.server_name = talloc_asprintf(
 			mem_ctx, "\\\\%s", dcerpc_server_name(net_pipe));
@@ -1317,7 +1321,14 @@ static bool schan(struct torture_context *tctx,
 		E_md4hash(password, new_password.hash);
 
 		creds_state = cli_credentials_get_netlogon_creds(wks_creds);
-		netlogon_creds_des_encrypt(creds_state, &new_password);
+		dcerpc_binding_handle_auth_info(net_handle,
+						&auth_type,
+						&auth_level);
+		status = netlogon_creds_encrypt_samr_Password(creds_state,
+							      &new_password,
+							      auth_type,
+							      auth_level);
+		torture_assert_ntstatus_ok(tctx, status, "encrypt_samr_Password");
 		netlogon_creds_client_authenticator(creds_state, &credential);
 
 		status = dcerpc_netr_ServerPasswordSet_r(net_handle, mem_ctx, &s);
@@ -2158,7 +2169,9 @@ static bool torture_samba3_rpc_randomauth2(struct torture_context *torture)
 						 a.in.secure_channel_type,
 						 r.in.credentials,
 						 r.out.return_credentials, &mach_pw,
-						 &netr_cred, negotiate_flags);
+						 &netr_cred,
+						 negotiate_flags,
+						 negotiate_flags);
 	torture_assert(torture, (creds_state != NULL), "memory allocation failed");
 
 	status = dcerpc_netr_ServerAuthenticate2_r(net_handle, mem_ctx, &a);

source4/torture/rpc/samlogon.c

@@ -91,6 +91,12 @@ static NTSTATUS check_samlogon(struct samlogon_state *samlogon_state,
 	struct netr_NetworkInfo ninfo;
 	struct netr_SamBaseInfo *base = NULL;
 	uint16_t validation_level = 0;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+
+	dcerpc_binding_handle_auth_info(samlogon_state->p->binding_handle,
+					&auth_type,
+					&auth_level);
 
 	samlogon_state->r.in.logon->network = &ninfo;
 	samlogon_state->r_ex.in.logon->network = &ninfo;
@@ -178,7 +184,9 @@ static NTSTATUS check_samlogon(struct samlogon_state *samlogon_state,
 
 		status = netlogon_creds_decrypt_samlogon_validation(samlogon_state->creds,
 								    validation_level,
-								    r->out.validation);
+								    r->out.validation,
+								    auth_type,
+								    auth_level);
 		if (!NT_STATUS_IS_OK(status)) {
 			if (error_string) {
 				*error_string = strdup(nt_errstr(status));
@@ -218,7 +226,9 @@ static NTSTATUS check_samlogon(struct samlogon_state *samlogon_state,
 
 		status = netlogon_creds_decrypt_samlogon_validation(samlogon_state->creds,
 								    validation_level,
-								    r_ex->out.validation);
+								    r_ex->out.validation,
+								    auth_type,
+								    auth_level);
 		if (!NT_STATUS_IS_OK(status)) {
 			if (error_string) {
 				*error_string = strdup(nt_errstr(status));
@@ -266,7 +276,9 @@ static NTSTATUS check_samlogon(struct samlogon_state *samlogon_state,
 
 		status = netlogon_creds_decrypt_samlogon_validation(samlogon_state->creds,
 								    validation_level,
-								    r_flags->out.validation);
+								    r_flags->out.validation,
+								    auth_type,
+								    auth_level);
 		if (!NT_STATUS_IS_OK(status)) {
 			if (error_string) {
 				*error_string = strdup(nt_errstr(status));
@@ -1539,6 +1551,10 @@ bool test_InteractiveLogon(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx,
 	union netr_Validation validation;
 	uint8_t authoritative = 1;
 	struct dcerpc_binding_handle *b = p->binding_handle;
+	enum dcerpc_AuthType auth_type;
+	enum dcerpc_AuthLevel auth_level;
+
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
 
 	ZERO_STRUCT(a);
 	ZERO_STRUCT(r);
@@ -1574,13 +1590,15 @@ bool test_InteractiveLogon(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx,
 	}
 	E_md4hash(plain_pass, pinfo.ntpassword.hash);
 
-	if (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) {
-		netlogon_creds_arcfour_crypt(creds, pinfo.lmpassword.hash, 16);
-		netlogon_creds_arcfour_crypt(creds, pinfo.ntpassword.hash, 16);
-	} else {
-		netlogon_creds_des_encrypt(creds, &pinfo.lmpassword);
-		netlogon_creds_des_encrypt(creds, &pinfo.ntpassword);
-	}
+	status = netlogon_creds_encrypt_samlogon_logon(creds,
+						       r.in.logon_level,
+						       r.in.logon,
+						       auth_type,
+						       auth_level);
+	torture_assert_ntstatus_ok_goto(tctx,
+		status,
+		ret, failed,
+		"netlogon_creds_encrypt_samlogon_logon");
 
 	torture_comment(tctx, "Testing netr_LogonSamLogonWithFlags '%s' (Interactive Logon)\n", comment);
 

source4/torture/rpc/samr.c

@@ -3607,6 +3607,8 @@ static bool test_SamLogon(struct torture_context *tctx,
 	struct netlogon_creds_CredentialState *creds;
 	struct netr_Authenticator a;
 	struct dcerpc_binding_handle *b = p->binding_handle;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
+	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
 
 	torture_assert(tctx, (creds = cli_credentials_get_netlogon_creds(machine_credentials)), "");
 
@@ -3636,17 +3638,6 @@ static bool test_SamLogon(struct torture_context *tctx,
 		}
 		E_md4hash(cli_credentials_get_password(test_credentials), pinfo.ntpassword.hash);
 
-		if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-			netlogon_creds_aes_encrypt(creds, pinfo.lmpassword.hash, 16);
-			netlogon_creds_aes_encrypt(creds, pinfo.ntpassword.hash, 16);
-		} else if (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) {
-			netlogon_creds_arcfour_crypt(creds, pinfo.lmpassword.hash, 16);
-			netlogon_creds_arcfour_crypt(creds, pinfo.ntpassword.hash, 16);
-		} else {
-			netlogon_creds_des_encrypt(creds, &pinfo.lmpassword);
-			netlogon_creds_des_encrypt(creds, &pinfo.ntpassword);
-		}
-
 		pinfo.identity_info = identity;
 		logon.password = &pinfo;
 
@@ -3693,6 +3684,14 @@ static bool test_SamLogon(struct torture_context *tctx,
 
 	r.in.validation_level = 6;
 
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
+	status = netlogon_creds_encrypt_samlogon_logon(creds,
+						       r.in.logon_level,
+						       r.in.logon,
+						       auth_type,
+						       auth_level);
+	torture_assert_ntstatus_ok(tctx, status, "encrypt_samlogon_logon");
+
 	torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogonEx_r(b, tctx, &r),
 		"netr_LogonSamLogonEx failed");
 	if (NT_STATUS_EQUAL(r.out.result, NT_STATUS_INVALID_INFO_CLASS)) {

source4/torture/rpc/schannel.c

@@ -32,6 +32,7 @@
 #include "libcli/security/security.h"
 #include "system/filesys.h"
 #include "param/param.h"
+#include "param/loadparm.h"
 #include "librpc/rpc/dcerpc_proto.h"
 #include "libcli/composite/composite.h"
 #include "lib/events/events.h"
@@ -63,6 +64,7 @@ bool test_netlogon_ex_ops(struct dcerpc_pipe *p, struct torture_context *tctx,
 	struct netr_SamBaseInfo *base = NULL;
 	const char *crypto_alg = "";
 	bool can_do_validation_6 = true;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
 	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
 
 	if (lpcfg_client_lanman_auth(tctx->lp_ctx)) {
@@ -136,7 +138,7 @@ bool test_netlogon_ex_ops(struct dcerpc_pipe *p, struct torture_context *tctx,
 		}
 	}
 
-	dcerpc_binding_handle_auth_info(b, NULL, &auth_level);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
 	if (auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
 		r.in.validation_level = 6;
 
@@ -207,13 +209,12 @@ bool test_netlogon_ex_ops(struct dcerpc_pipe *p, struct torture_context *tctx,
 		dump_data(1, base->key.key, 16);
 		dump_data(1, base->LMSessKey.key, 8);
 
-		if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-			netlogon_creds_aes_decrypt(creds, base->key.key, 16);
-			netlogon_creds_aes_decrypt(creds, base->LMSessKey.key, 8);
-		} else if (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) {
-			netlogon_creds_arcfour_crypt(creds, base->key.key, 16);
-			netlogon_creds_arcfour_crypt(creds, base->LMSessKey.key, 8);
-		}
+		status = netlogon_creds_decrypt_samlogon_validation(creds,
+								    r.in.validation_level,
+								    r.out.validation,
+								    auth_type,
+								    auth_level);
+		torture_assert_ntstatus_ok(tctx, status, "decrypt_samlogon_validation");
 
 		DEBUG(1,("decrypted keys validation_level %d\n",
 			validation_levels[i]));
@@ -276,6 +277,7 @@ static bool test_netlogon_ex_bug14932(struct dcerpc_pipe *p,
 	struct netr_SamBaseInfo *base = NULL;
 	const char *crypto_alg = "";
 	bool can_do_validation_6 = true;
+	enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
 	enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
 
 	flags |= CLI_CRED_NTLMv2_AUTH;
@@ -341,7 +343,7 @@ static bool test_netlogon_ex_bug14932(struct dcerpc_pipe *p,
 		}
 	}
 
-	dcerpc_binding_handle_auth_info(b, NULL, &auth_level);
+	dcerpc_binding_handle_auth_info(b, &auth_type, &auth_level);
 	if (auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
 		r.in.validation_level = 6;
 
@@ -412,13 +414,12 @@ static bool test_netlogon_ex_bug14932(struct dcerpc_pipe *p,
 		dump_data(1, base->key.key, 16);
 		dump_data(1, base->LMSessKey.key, 8);
 
-		if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
-			netlogon_creds_aes_decrypt(creds, base->key.key, 16);
-			netlogon_creds_aes_decrypt(creds, base->LMSessKey.key, 8);
-		} else if (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) {
-			netlogon_creds_arcfour_crypt(creds, base->key.key, 16);
-			netlogon_creds_arcfour_crypt(creds, base->LMSessKey.key, 8);
-		}
+		status = netlogon_creds_decrypt_samlogon_validation(creds,
+								    r.in.validation_level,
+								    r.out.validation,
+								    auth_type,
+								    auth_level);
+		torture_assert_ntstatus_ok(tctx, status, "decrypt_samlogon_validation");
 
 		DEBUG(1,("decrypted keys validation_level %d\n",
 			validation_levels[i]));
@@ -591,6 +592,7 @@ static bool test_schannel(struct torture_context *tctx,
 	struct netlogon_creds_CredentialState *creds;
 	struct cli_credentials *credentials;
 	enum dcerpc_transport_t transport;
+	uint32_t requested_flags;
 
 	join_ctx = torture_join_domain(tctx,
 				       talloc_asprintf(tctx, "%s%d", TEST_MACHINE_NAME, i),
@@ -630,8 +632,26 @@ static bool test_schannel(struct torture_context *tctx,
 	creds = cli_credentials_get_netlogon_creds(credentials);
 	torture_assert(tctx, (creds != NULL), "schannel creds");
 
+	requested_flags = NETLOGON_NEG_AUTH2_FLAGS;
+	if (dcerpc_flags & DCERPC_SCHANNEL_128) {
+		requested_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
+	}
+	if (dcerpc_flags & DCERPC_SCHANNEL_AES) {
+		requested_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
+		requested_flags |= NETLOGON_NEG_SUPPORTS_AES;
+	}
+	if (dcerpc_flags & DCERPC_SCHANNEL_AUTO) {
+		requested_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
+		requested_flags |= NETLOGON_NEG_SUPPORTS_AES;
+	}
+	if (lpcfg_weak_crypto(tctx->lp_ctx) == SAMBA_WEAK_CRYPTO_DISALLOWED) {
+		requested_flags &= ~NETLOGON_NEG_ARCFOUR;
+		requested_flags |= NETLOGON_NEG_SUPPORTS_AES;
+	}
+
 	/* checks the capabilities */
-	torture_assert(tctx, test_netlogon_capabilities(p_netlogon, tctx, credentials, creds),
+	torture_assert(tctx,
+		       test_netlogon_capabilities(p_netlogon, tctx, credentials, requested_flags, creds),
 		       "Failed to process schannel secured capability ops (on fresh connection)");
 
 	/* do a couple of logins */
@@ -719,8 +739,26 @@ static bool test_schannel(struct torture_context *tctx,
 						  tctx, &p_netlogon2);
 	torture_assert_ntstatus_ok(tctx, status, "Failed to create secondary connection");
 
+	requested_flags = NETLOGON_NEG_AUTH2_FLAGS;
+	if (dcerpc_flags & DCERPC_SCHANNEL_128) {
+		requested_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
+	}
+	if (dcerpc_flags & DCERPC_SCHANNEL_AES) {
+		requested_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
+		requested_flags |= NETLOGON_NEG_SUPPORTS_AES;
+	}
+	if (dcerpc_flags & DCERPC_SCHANNEL_AUTO) {
+		requested_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
+		requested_flags |= NETLOGON_NEG_SUPPORTS_AES;
+	}
+	if (lpcfg_weak_crypto(tctx->lp_ctx) == SAMBA_WEAK_CRYPTO_DISALLOWED) {
+		requested_flags &= ~NETLOGON_NEG_ARCFOUR;
+		requested_flags |= NETLOGON_NEG_SUPPORTS_AES;
+	}
+
 	/* checks the capabilities */
-	torture_assert(tctx, test_netlogon_capabilities(p_netlogon2, tctx, credentials, creds),
+	torture_assert(tctx,
+		       test_netlogon_capabilities(p_netlogon2, tctx, credentials, requested_flags, creds),
 		       "Failed to process schannel secured capability ops (on fresh connection)");
 
 	/* Try the schannel-only SamLogonEx operation */
@@ -1248,6 +1286,8 @@ bool torture_rpc_schannel_bench1(struct torture_context *torture)
 		struct dcerpc_pipe *net_pipe;
 		struct netr_Authenticator credential, return_authenticator;
 		struct samr_Password new_password;
+		enum dcerpc_AuthType auth_type;
+		enum dcerpc_AuthLevel auth_level;
 
 		status = dcerpc_pipe_connect_b(s, &net_pipe, s->b,
 					       &ndr_table_netlogon,
@@ -1272,7 +1312,14 @@ bool torture_rpc_schannel_bench1(struct torture_context *torture)
 
 		creds_state = cli_credentials_get_netlogon_creds(
 			s->wks_creds1);
-		netlogon_creds_des_encrypt(creds_state, &new_password);
+		dcerpc_binding_handle_auth_info(net_pipe->binding_handle,
+						&auth_type,
+						&auth_level);
+		status = netlogon_creds_encrypt_samr_Password(creds_state,
+							      &new_password,
+							      auth_type,
+							      auth_level);
+		torture_assert_ntstatus_ok(torture, status, "encrypt_samr_Password");
 		netlogon_creds_client_authenticator(creds_state, &credential);
 
 		torture_assert_ntstatus_ok(torture, dcerpc_netr_ServerPasswordSet_r(net_pipe->binding_handle, torture, &pwset),