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16335412ff
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15206 Signed-off-by: Andreas Schneider <asn@samba.org> Reviewed-by: Noel Power <noel.power@suse.com>
127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* RPC Pipe client / server routines
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* Copyright (C) Guenther Deschner 2008.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "../libcli/auth/libcli_auth.h"
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#include "rpc_client/init_samr.h"
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#include "librpc/rpc/dcerpc_samr.h"
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#include "lib/crypto/gnutls_helpers.h"
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#include <gnutls/gnutls.h>
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#include <gnutls/crypto.h>
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/*************************************************************************
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inits a samr_CryptPasswordEx structure
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*************************************************************************/
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NTSTATUS init_samr_CryptPasswordEx(const char *pwd,
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DATA_BLOB *session_key,
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struct samr_CryptPasswordEx *pwd_buf)
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{
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return encode_rc4_passwd_buffer(pwd, session_key, pwd_buf);
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}
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/*************************************************************************
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inits a samr_CryptPassword structure
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*************************************************************************/
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NTSTATUS init_samr_CryptPassword(const char *pwd,
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DATA_BLOB *session_key,
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struct samr_CryptPassword *pwd_buf)
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{
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/* samr_CryptPassword */
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gnutls_cipher_hd_t cipher_hnd = NULL;
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gnutls_datum_t sess_key = {
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.data = session_key->data,
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.size = session_key->length,
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};
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bool ok;
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int rc;
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ok = encode_pw_buffer(pwd_buf->data, pwd, STR_UNICODE);
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if (!ok) {
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return NT_STATUS_INTERNAL_ERROR;
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}
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rc = gnutls_cipher_init(&cipher_hnd,
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GNUTLS_CIPHER_ARCFOUR_128,
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&sess_key,
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NULL);
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if (rc != 0) {
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return gnutls_error_to_ntstatus(rc, NT_STATUS_ACCESS_DISABLED_BY_POLICY_OTHER);
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}
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rc = gnutls_cipher_encrypt(cipher_hnd,
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pwd_buf->data,
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516);
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gnutls_cipher_deinit(cipher_hnd);
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if (rc != 0) {
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return gnutls_error_to_ntstatus(rc, NT_STATUS_ACCESS_DISABLED_BY_POLICY_OTHER);
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}
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return NT_STATUS_OK;
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}
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NTSTATUS init_samr_CryptPasswordAES(TALLOC_CTX *mem_ctx,
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const char *password,
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DATA_BLOB *salt,
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DATA_BLOB *session_key,
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struct samr_EncryptedPasswordAES *ppwd_buf)
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{
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uint8_t pw_data[514] = {0};
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DATA_BLOB plaintext = {
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.data = pw_data,
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.length = sizeof(pw_data),
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};
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DATA_BLOB ciphertext = data_blob_null;
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NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
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bool ok;
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if (ppwd_buf == NULL) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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ok = encode_pwd_buffer514_from_str(pw_data, password, STR_UNICODE);
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if (!ok) {
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return NT_STATUS_INTERNAL_ERROR;
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}
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status = samba_gnutls_aead_aes_256_cbc_hmac_sha512_encrypt(
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mem_ctx,
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&plaintext,
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session_key,
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&samr_aes256_enc_key_salt,
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&samr_aes256_mac_key_salt,
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salt,
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&ciphertext,
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ppwd_buf->auth_data);
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BURN_DATA(pw_data);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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ppwd_buf->cipher_len = ciphertext.length;
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ppwd_buf->cipher = ciphertext.data;
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ppwd_buf->PBKDF2Iterations = 0;
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SMB_ASSERT(salt->length == sizeof(ppwd_buf->salt));
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memcpy(ppwd_buf->salt, salt->data, salt->length);
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return NT_STATUS_OK;
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}
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