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r6738: My version of the patch by metze that I just reverted (-r 6734).
This also includes other changes to reduce memory use by GENSEC when not being used for sign/seal operations. This should lower tridge's K 'per connection' benchmark further. Andrew Bartlett
This commit is contained in:
Andrew Bartlett
Gerald (Jerry) Carter
parent
77d054c65a
commit
4a5829401b
@ -178,7 +178,7 @@ struct gensec_ntlmssp_state
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/* internal variables used by NTLM2 */
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uint8_t session_nonce[16];
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} ntlm2;
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};
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} crypt;
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struct auth_context *auth_context;
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struct auth_serversupplied_info *server_info;
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@ -350,11 +350,11 @@ static NTSTATUS ntlmssp_server_preauth(struct gensec_ntlmssp_state *gensec_ntlms
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gensec_ntlmssp_state->doing_ntlm2 = True;
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memcpy(gensec_ntlmssp_state->ntlm2.session_nonce, gensec_ntlmssp_state->internal_chal.data, 8);
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memcpy(&gensec_ntlmssp_state->ntlm2.session_nonce[8], gensec_ntlmssp_state->lm_resp.data, 8);
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memcpy(gensec_ntlmssp_state->crypt.ntlm2.session_nonce, gensec_ntlmssp_state->internal_chal.data, 8);
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memcpy(&gensec_ntlmssp_state->crypt.ntlm2.session_nonce[8], gensec_ntlmssp_state->lm_resp.data, 8);
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MD5Init(&md5_session_nonce_ctx);
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MD5Update(&md5_session_nonce_ctx, gensec_ntlmssp_state->ntlm2.session_nonce, 16);
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MD5Update(&md5_session_nonce_ctx, gensec_ntlmssp_state->crypt.ntlm2.session_nonce, 16);
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MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
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gensec_ntlmssp_state->chal = data_blob_talloc(gensec_ntlmssp_state,
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@ -366,7 +366,7 @@ static NTSTATUS ntlmssp_server_preauth(struct gensec_ntlmssp_state *gensec_ntlms
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/* We changed the effective challenge - set it */
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if (!NT_STATUS_IS_OK(nt_status =
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gensec_ntlmssp_state->set_challenge(gensec_ntlmssp_state,
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&gensec_ntlmssp_state->chal))) {
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&gensec_ntlmssp_state->chal))) {
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/* zero this out */
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data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
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return nt_status;
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@ -387,10 +387,11 @@ static NTSTATUS ntlmssp_server_preauth(struct gensec_ntlmssp_state *gensec_ntlms
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* @return Errors or NT_STATUS_OK.
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*/
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static NTSTATUS ntlmssp_server_postauth(struct gensec_ntlmssp_state *gensec_ntlmssp_state,
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static NTSTATUS ntlmssp_server_postauth(struct gensec_security *gensec_security,
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DATA_BLOB *user_session_key,
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DATA_BLOB *lm_session_key)
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{
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struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
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NTSTATUS nt_status;
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DATA_BLOB session_key = data_blob(NULL, 0);
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@ -404,8 +405,8 @@ static NTSTATUS ntlmssp_server_postauth(struct gensec_ntlmssp_state *gensec_ntlm
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if (gensec_ntlmssp_state->doing_ntlm2) {
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if (user_session_key && user_session_key->data && user_session_key->length == 16) {
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session_key = data_blob_talloc(gensec_ntlmssp_state, NULL, 16);
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hmac_md5(user_session_key->data, gensec_ntlmssp_state->ntlm2.session_nonce,
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sizeof(gensec_ntlmssp_state->ntlm2.session_nonce), session_key.data);
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hmac_md5(user_session_key->data, gensec_ntlmssp_state->crypt.ntlm2.session_nonce,
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sizeof(gensec_ntlmssp_state->crypt.ntlm2.session_nonce), session_key.data);
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DEBUG(10,("ntlmssp_server_auth: Created NTLM2 session key.\n"));
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dump_data_pw("NTLM2 session key:\n", session_key.data, session_key.length);
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@ -500,7 +501,12 @@ static NTSTATUS ntlmssp_server_postauth(struct gensec_ntlmssp_state *gensec_ntlm
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/* The server might need us to use a partial-strength session key */
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ntlmssp_weaken_keys(gensec_ntlmssp_state);
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nt_status = ntlmssp_sign_init(gensec_ntlmssp_state);
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if ((gensec_security->want_features & GENSEC_FEATURE_SIGN)
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|| (gensec_security->want_features & GENSEC_FEATURE_SEAL)) {
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nt_status = ntlmssp_sign_init(gensec_ntlmssp_state);
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} else {
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nt_status = NT_STATUS_OK;
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}
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data_blob_free(&gensec_ntlmssp_state->encrypted_session_key);
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@ -531,7 +537,7 @@ static NTSTATUS ntlmssp_server_postauth(struct gensec_ntlmssp_state *gensec_ntlm
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NTSTATUS ntlmssp_server_auth(struct gensec_security *gensec_security,
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TALLOC_CTX *out_mem_ctx,
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const DATA_BLOB in, DATA_BLOB *out)
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{
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{
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struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
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DATA_BLOB user_session_key = data_blob(NULL, 0);
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DATA_BLOB lm_session_key = data_blob(NULL, 0);
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@ -559,7 +565,7 @@ NTSTATUS ntlmssp_server_auth(struct gensec_security *gensec_security,
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}
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if (gensec_ntlmssp_state->server_use_session_keys) {
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return ntlmssp_server_postauth(gensec_ntlmssp_state, &user_session_key, &lm_session_key);
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return ntlmssp_server_postauth(gensec_security, &user_session_key, &lm_session_key);
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} else {
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gensec_ntlmssp_state->session_key = data_blob(NULL, 0);
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return NT_STATUS_OK;
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@ -78,16 +78,16 @@ static NTSTATUS ntlmssp_make_packet_signature(struct gensec_ntlmssp_state *gense
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switch (direction) {
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case NTLMSSP_SEND:
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SIVAL(seq_num, 0, gensec_ntlmssp_state->ntlm2.send_seq_num);
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gensec_ntlmssp_state->ntlm2.send_seq_num++;
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hmac_md5_init_limK_to_64(gensec_ntlmssp_state->ntlm2.send_sign_key.data,
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gensec_ntlmssp_state->ntlm2.send_sign_key.length, &ctx);
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SIVAL(seq_num, 0, gensec_ntlmssp_state->crypt.ntlm2.send_seq_num);
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gensec_ntlmssp_state->crypt.ntlm2.send_seq_num++;
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hmac_md5_init_limK_to_64(gensec_ntlmssp_state->crypt.ntlm2.send_sign_key.data,
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gensec_ntlmssp_state->crypt.ntlm2.send_sign_key.length, &ctx);
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break;
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case NTLMSSP_RECEIVE:
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SIVAL(seq_num, 0, gensec_ntlmssp_state->ntlm2.recv_seq_num);
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gensec_ntlmssp_state->ntlm2.recv_seq_num++;
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hmac_md5_init_limK_to_64(gensec_ntlmssp_state->ntlm2.recv_sign_key.data,
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gensec_ntlmssp_state->ntlm2.recv_sign_key.length, &ctx);
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SIVAL(seq_num, 0, gensec_ntlmssp_state->crypt.ntlm2.recv_seq_num);
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gensec_ntlmssp_state->crypt.ntlm2.recv_seq_num++;
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hmac_md5_init_limK_to_64(gensec_ntlmssp_state->crypt.ntlm2.recv_sign_key.data,
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gensec_ntlmssp_state->crypt.ntlm2.recv_sign_key.length, &ctx);
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break;
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}
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hmac_md5_update(seq_num, sizeof(seq_num), &ctx);
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@ -97,10 +97,10 @@ static NTSTATUS ntlmssp_make_packet_signature(struct gensec_ntlmssp_state *gense
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if (encrypt_sig && gensec_ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
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switch (direction) {
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case NTLMSSP_SEND:
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arcfour_crypt_sbox(gensec_ntlmssp_state->ntlm2.send_seal_arcfour_state, digest, 8);
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arcfour_crypt_sbox(gensec_ntlmssp_state->crypt.ntlm2.send_seal_arcfour_state, digest, 8);
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break;
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case NTLMSSP_RECEIVE:
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arcfour_crypt_sbox(gensec_ntlmssp_state->ntlm2.recv_seal_arcfour_state, digest, 8);
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arcfour_crypt_sbox(gensec_ntlmssp_state->crypt.ntlm2.recv_seal_arcfour_state, digest, 8);
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break;
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}
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}
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@ -112,12 +112,12 @@ static NTSTATUS ntlmssp_make_packet_signature(struct gensec_ntlmssp_state *gense
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} else {
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uint32_t crc;
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crc = crc32_calc_buffer(data, length);
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if (!msrpc_gen(sig_mem_ctx, sig, "dddd", NTLMSSP_SIGN_VERSION, 0, crc, gensec_ntlmssp_state->ntlm.seq_num)) {
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if (!msrpc_gen(sig_mem_ctx, sig, "dddd", NTLMSSP_SIGN_VERSION, 0, crc, gensec_ntlmssp_state->crypt.ntlm.seq_num)) {
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return NT_STATUS_NO_MEMORY;
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}
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gensec_ntlmssp_state->ntlm.seq_num++;
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gensec_ntlmssp_state->crypt.ntlm.seq_num++;
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arcfour_crypt_sbox(gensec_ntlmssp_state->ntlm.arcfour_state, sig->data+4, sig->length-4);
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arcfour_crypt_sbox(gensec_ntlmssp_state->crypt.ntlm.arcfour_state, sig->data+4, sig->length-4);
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}
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dump_data_pw("calculated ntlmssp signature\n", sig->data, sig->length);
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return NT_STATUS_OK;
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@ -136,6 +136,11 @@ NTSTATUS gensec_ntlmssp_sign_packet(struct gensec_security *gensec_security,
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return NT_STATUS_NO_USER_SESSION_KEY;
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}
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if (!(gensec_security->want_features & GENSEC_FEATURE_SIGN)) {
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DEBUG(3, ("GENSEC Signing not requested - cannot seal packet!\n"));
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return NT_STATUS_INVALID_PARAMETER;
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}
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if (!gensec_ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
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DEBUG(3, ("NTLMSSP Signing not negotiated - cannot sign packet!\n"));
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return NT_STATUS_INVALID_PARAMETER;
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@ -168,6 +173,11 @@ NTSTATUS gensec_ntlmssp_check_packet(struct gensec_security *gensec_security,
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return NT_STATUS_NO_USER_SESSION_KEY;
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}
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if (!(gensec_security->want_features & (GENSEC_FEATURE_SEAL|GENSEC_FEATURE_SIGN))) {
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DEBUG(3, ("GENSEC Signing/Sealing not requested - cannot check packet!\n"));
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return NT_STATUS_INVALID_PARAMETER;
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}
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if (sig->length < 8) {
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DEBUG(0, ("NTLMSSP packet check failed due to short signature (%lu bytes)!\n",
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(unsigned long)sig->length));
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@ -234,11 +244,17 @@ NTSTATUS gensec_ntlmssp_seal_packet(struct gensec_security *gensec_security,
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return NT_STATUS_NO_USER_SESSION_KEY;
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}
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if (!(gensec_security->want_features & GENSEC_FEATURE_SEAL)) {
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DEBUG(3, ("GENSEC Sealing not requested - cannot seal packet!\n"));
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return NT_STATUS_INVALID_PARAMETER;
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}
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if (!gensec_ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
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DEBUG(3, ("NTLMSSP Sealing not negotiated - cannot seal packet!\n"));
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return NT_STATUS_INVALID_PARAMETER;
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}
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DEBUG(10,("ntlmssp_seal_data: seal\n"));
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dump_data_pw("ntlmssp clear data\n", data, length);
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if (gensec_ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
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@ -249,14 +265,14 @@ NTSTATUS gensec_ntlmssp_seal_packet(struct gensec_security *gensec_security,
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data, length,
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whole_pdu, pdu_length,
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NTLMSSP_SEND, sig, False);
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arcfour_crypt_sbox(gensec_ntlmssp_state->ntlm2.send_seal_arcfour_state, data, length);
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arcfour_crypt_sbox(gensec_ntlmssp_state->crypt.ntlm2.send_seal_arcfour_state, data, length);
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if (gensec_ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
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arcfour_crypt_sbox(gensec_ntlmssp_state->ntlm2.send_seal_arcfour_state, sig->data+4, 8);
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arcfour_crypt_sbox(gensec_ntlmssp_state->crypt.ntlm2.send_seal_arcfour_state, sig->data+4, 8);
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}
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} else {
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uint32_t crc;
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crc = crc32_calc_buffer(data, length);
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if (!msrpc_gen(sig_mem_ctx, sig, "dddd", NTLMSSP_SIGN_VERSION, 0, crc, gensec_ntlmssp_state->ntlm.seq_num)) {
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if (!msrpc_gen(sig_mem_ctx, sig, "dddd", NTLMSSP_SIGN_VERSION, 0, crc, gensec_ntlmssp_state->crypt.ntlm.seq_num)) {
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return NT_STATUS_NO_MEMORY;
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}
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@ -266,10 +282,10 @@ NTSTATUS gensec_ntlmssp_seal_packet(struct gensec_security *gensec_security,
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constant, but is is rather updated with each
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iteration */
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arcfour_crypt_sbox(gensec_ntlmssp_state->ntlm.arcfour_state, data, length);
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arcfour_crypt_sbox(gensec_ntlmssp_state->ntlm.arcfour_state, sig->data+4, sig->length-4);
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arcfour_crypt_sbox(gensec_ntlmssp_state->crypt.ntlm.arcfour_state, data, length);
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arcfour_crypt_sbox(gensec_ntlmssp_state->crypt.ntlm.arcfour_state, sig->data+4, sig->length-4);
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/* increment counter on send */
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gensec_ntlmssp_state->ntlm.seq_num++;
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gensec_ntlmssp_state->crypt.ntlm.seq_num++;
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nt_status = NT_STATUS_OK;
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}
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dump_data_pw("ntlmssp signature\n", sig->data, sig->length);
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@ -301,9 +317,14 @@ NTSTATUS gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
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return NT_STATUS_NO_USER_SESSION_KEY;
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}
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if (!(gensec_security->want_features & GENSEC_FEATURE_SEAL)) {
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DEBUG(3, ("GENSEC Sealing not requested - cannot unseal packet!\n"));
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return NT_STATUS_INVALID_PARAMETER;
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}
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dump_data_pw("ntlmssp sealed data\n", data, length);
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if (gensec_ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
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arcfour_crypt_sbox(gensec_ntlmssp_state->ntlm2.recv_seal_arcfour_state, data, length);
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arcfour_crypt_sbox(gensec_ntlmssp_state->crypt.ntlm2.recv_seal_arcfour_state, data, length);
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nt_status = ntlmssp_make_packet_signature(gensec_ntlmssp_state, sig_mem_ctx,
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data, length,
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@ -329,7 +350,7 @@ NTSTATUS gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
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dump_data_pw("ntlmssp clear data\n", data, length);
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return NT_STATUS_OK;
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} else {
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arcfour_crypt_sbox(gensec_ntlmssp_state->ntlm.arcfour_state, data, length);
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arcfour_crypt_sbox(gensec_ntlmssp_state->crypt.ntlm.arcfour_state, data, length);
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dump_data_pw("ntlmssp clear data\n", data, length);
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return gensec_ntlmssp_check_packet(gensec_security, sig_mem_ctx, data, length, whole_pdu, pdu_length, sig);
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}
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@ -379,10 +400,10 @@ NTSTATUS ntlmssp_sign_init(struct gensec_ntlmssp_state *gensec_ntlmssp_state)
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return NT_STATUS_INTERNAL_ERROR;
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}
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gensec_ntlmssp_state->ntlm2.send_seal_arcfour_state = talloc(gensec_ntlmssp_state, struct arcfour_state);
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NT_STATUS_HAVE_NO_MEMORY(gensec_ntlmssp_state->ntlm2.send_seal_arcfour_state);
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gensec_ntlmssp_state->ntlm2.recv_seal_arcfour_state = talloc(gensec_ntlmssp_state, struct arcfour_state);
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NT_STATUS_HAVE_NO_MEMORY(gensec_ntlmssp_state->ntlm2.send_seal_arcfour_state);
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gensec_ntlmssp_state->crypt.ntlm2.send_seal_arcfour_state = talloc(gensec_ntlmssp_state, struct arcfour_state);
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NT_STATUS_HAVE_NO_MEMORY(gensec_ntlmssp_state->crypt.ntlm2.send_seal_arcfour_state);
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gensec_ntlmssp_state->crypt.ntlm2.recv_seal_arcfour_state = talloc(gensec_ntlmssp_state, struct arcfour_state);
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NT_STATUS_HAVE_NO_MEMORY(gensec_ntlmssp_state->crypt.ntlm2.send_seal_arcfour_state);
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/**
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Weaken NTLMSSP keys to cope with down-level clients, servers and export restrictions.
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@ -404,11 +425,11 @@ NTSTATUS ntlmssp_sign_init(struct gensec_ntlmssp_state *gensec_ntlmssp_state)
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/* SEND */
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calc_ntlmv2_key(gensec_ntlmssp_state,
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&gensec_ntlmssp_state->ntlm2.send_sign_key,
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&gensec_ntlmssp_state->crypt.ntlm2.send_sign_key,
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gensec_ntlmssp_state->session_key, send_sign_const);
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dump_data_pw("NTLMSSP send sign key:\n",
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gensec_ntlmssp_state->ntlm2.send_sign_key.data,
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gensec_ntlmssp_state->ntlm2.send_sign_key.length);
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gensec_ntlmssp_state->crypt.ntlm2.send_sign_key.data,
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gensec_ntlmssp_state->crypt.ntlm2.send_sign_key.length);
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calc_ntlmv2_key(gensec_ntlmssp_state,
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&send_seal_key,
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@ -417,20 +438,20 @@ NTSTATUS ntlmssp_sign_init(struct gensec_ntlmssp_state *gensec_ntlmssp_state)
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send_seal_key.data,
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send_seal_key.length);
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arcfour_init(gensec_ntlmssp_state->ntlm2.send_seal_arcfour_state,
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arcfour_init(gensec_ntlmssp_state->crypt.ntlm2.send_seal_arcfour_state,
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&send_seal_key);
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dump_data_pw("NTLMSSP send sesl hash:\n",
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gensec_ntlmssp_state->ntlm2.send_seal_arcfour_state->sbox,
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sizeof(gensec_ntlmssp_state->ntlm2.send_seal_arcfour_state->sbox));
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gensec_ntlmssp_state->crypt.ntlm2.send_seal_arcfour_state->sbox,
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sizeof(gensec_ntlmssp_state->crypt.ntlm2.send_seal_arcfour_state->sbox));
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/* RECV */
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calc_ntlmv2_key(gensec_ntlmssp_state,
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&gensec_ntlmssp_state->ntlm2.recv_sign_key,
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&gensec_ntlmssp_state->crypt.ntlm2.recv_sign_key,
|
||||
gensec_ntlmssp_state->session_key, recv_sign_const);
|
||||
dump_data_pw("NTLMSSP recv sign key:\n",
|
||||
gensec_ntlmssp_state->ntlm2.recv_sign_key.data,
|
||||
gensec_ntlmssp_state->ntlm2.recv_sign_key.length);
|
||||
gensec_ntlmssp_state->crypt.ntlm2.recv_sign_key.data,
|
||||
gensec_ntlmssp_state->crypt.ntlm2.recv_sign_key.length);
|
||||
|
||||
calc_ntlmv2_key(gensec_ntlmssp_state,
|
||||
&recv_seal_key,
|
||||
@ -438,28 +459,28 @@ NTSTATUS ntlmssp_sign_init(struct gensec_ntlmssp_state *gensec_ntlmssp_state)
|
||||
dump_data_pw("NTLMSSP recv seal key:\n",
|
||||
recv_seal_key.data,
|
||||
recv_seal_key.length);
|
||||
arcfour_init(gensec_ntlmssp_state->ntlm2.recv_seal_arcfour_state,
|
||||
arcfour_init(gensec_ntlmssp_state->crypt.ntlm2.recv_seal_arcfour_state,
|
||||
&recv_seal_key);
|
||||
|
||||
dump_data_pw("NTLMSSP receive seal hash:\n",
|
||||
gensec_ntlmssp_state->ntlm2.recv_seal_arcfour_state->sbox,
|
||||
sizeof(gensec_ntlmssp_state->ntlm2.recv_seal_arcfour_state->sbox));
|
||||
gensec_ntlmssp_state->crypt.ntlm2.recv_seal_arcfour_state->sbox,
|
||||
sizeof(gensec_ntlmssp_state->crypt.ntlm2.recv_seal_arcfour_state->sbox));
|
||||
|
||||
gensec_ntlmssp_state->ntlm2.send_seq_num = 0;
|
||||
gensec_ntlmssp_state->ntlm2.recv_seq_num = 0;
|
||||
gensec_ntlmssp_state->crypt.ntlm2.send_seq_num = 0;
|
||||
gensec_ntlmssp_state->crypt.ntlm2.recv_seq_num = 0;
|
||||
|
||||
} else {
|
||||
DEBUG(5, ("NTLMSSP Sign/Seal - using NTLM1\n"));
|
||||
|
||||
gensec_ntlmssp_state->ntlm.arcfour_state = talloc(gensec_ntlmssp_state, struct arcfour_state);
|
||||
NT_STATUS_HAVE_NO_MEMORY(gensec_ntlmssp_state->ntlm.arcfour_state);
|
||||
gensec_ntlmssp_state->crypt.ntlm.arcfour_state = talloc(gensec_ntlmssp_state, struct arcfour_state);
|
||||
NT_STATUS_HAVE_NO_MEMORY(gensec_ntlmssp_state->crypt.ntlm.arcfour_state);
|
||||
|
||||
arcfour_init(gensec_ntlmssp_state->ntlm.arcfour_state,
|
||||
arcfour_init(gensec_ntlmssp_state->crypt.ntlm.arcfour_state,
|
||||
&gensec_ntlmssp_state->session_key);
|
||||
dump_data_pw("NTLMSSP hash:\n", gensec_ntlmssp_state->ntlm.arcfour_state->sbox,
|
||||
sizeof(gensec_ntlmssp_state->ntlm.arcfour_state->sbox));
|
||||
dump_data_pw("NTLMSSP hash:\n", gensec_ntlmssp_state->crypt.ntlm.arcfour_state->sbox,
|
||||
sizeof(gensec_ntlmssp_state->crypt.ntlm.arcfour_state->sbox));
|
||||
|
||||
gensec_ntlmssp_state->ntlm.seq_num = 0;
|
||||
gensec_ntlmssp_state->crypt.ntlm.seq_num = 0;
|
||||
}
|
||||
|
||||
return NT_STATUS_OK;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user