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/*
* Copyright (C) 2014 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/config.h"
#ifdef MONGO_CONFIG_SSL
#error This file should not be included if compiling with SSL support
#endif
#include "mongo/crypto/tom/tomcrypt.h"
namespace mongo {
namespace crypto {
/*
* Computes a SHA-1 hash of 'input'.
*/
bool sha1(const unsigned char* input, const size_t inputLen, unsigned char* output) {
hash_state hashState;
if (sha1_init(&hashState) != CRYPT_OK) {
return false;
}
if (sha1_process(&hashState, input, inputLen) != CRYPT_OK) {
return false;
}
if (sha1_done(&hashState, output) != CRYPT_OK) {
return false;
}
return true;
}
/*
* Computes a HMAC SHA-1 keyed hash of 'input' using the key 'key'
*/
bool hmacSha1(const unsigned char* key,
const size_t keyLen,
const unsigned char* input,
const size_t inputLen,
unsigned char* output,
unsigned int* outputLen) {
if (!key || !input || !output) {
return false;
}
static int hashId = -1;
if (hashId == -1) {
register_hash(&sha1_desc);
hashId = find_hash("sha1");
}
unsigned long sha1HashLen = 20;
if (hmac_memory(hashId, key, keyLen, input, inputLen, output, &sha1HashLen) != CRYPT_OK) {
return false;
}
*outputLen = sha1HashLen;
return true;
}
} // namespace crypto
} // namespace mongo
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