| 1 | /*
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| 2 | * Unix SMB/CIFS implementation.
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| 3 | * RPC Pipe client / server routines
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| 4 | * Copyright (C) Guenther Deschner 2008.
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 3 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>.
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| 18 | */
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| 19 |
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| 20 | #include "includes.h"
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| 21 | #include "../libcli/auth/libcli_auth.h"
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| 22 | #include "../lib/crypto/md5.h"
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| 23 | #include "../lib/crypto/arcfour.h"
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| 24 | #include "rpc_client/init_samr.h"
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| 25 |
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| 26 | /*************************************************************************
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| 27 | inits a samr_CryptPasswordEx structure
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| 28 | *************************************************************************/
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| 29 |
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| 30 | void init_samr_CryptPasswordEx(const char *pwd,
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| 31 | DATA_BLOB *session_key,
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| 32 | struct samr_CryptPasswordEx *pwd_buf)
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| 33 | {
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| 34 | /* samr_CryptPasswordEx */
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| 35 |
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| 36 | uchar pwbuf[532];
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| 37 | MD5_CTX md5_ctx;
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| 38 | uint8_t confounder[16];
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| 39 | DATA_BLOB confounded_session_key = data_blob(NULL, 16);
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| 40 |
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| 41 | encode_pw_buffer(pwbuf, pwd, STR_UNICODE);
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| 42 |
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| 43 | generate_random_buffer((uint8_t *)confounder, 16);
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| 44 |
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| 45 | MD5Init(&md5_ctx);
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| 46 | MD5Update(&md5_ctx, confounder, 16);
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| 47 | MD5Update(&md5_ctx, session_key->data,
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| 48 | session_key->length);
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| 49 | MD5Final(confounded_session_key.data, &md5_ctx);
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| 50 |
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| 51 | arcfour_crypt_blob(pwbuf, 516, &confounded_session_key);
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| 52 | memcpy(&pwbuf[516], confounder, 16);
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| 53 |
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| 54 | memcpy(pwd_buf->data, pwbuf, sizeof(pwbuf));
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| 55 | data_blob_free(&confounded_session_key);
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| 56 | }
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| 57 |
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| 58 | /*************************************************************************
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| 59 | inits a samr_CryptPassword structure
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| 60 | *************************************************************************/
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| 61 |
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| 62 | void init_samr_CryptPassword(const char *pwd,
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| 63 | DATA_BLOB *session_key,
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| 64 | struct samr_CryptPassword *pwd_buf)
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| 65 | {
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| 66 | /* samr_CryptPassword */
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| 67 |
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| 68 | encode_pw_buffer(pwd_buf->data, pwd, STR_UNICODE);
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| 69 | arcfour_crypt_blob(pwd_buf->data, 516, session_key);
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| 70 | }
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