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/**
* Copyright (C) 2018 MongoDB 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 <CommonCrypto/CommonDigest.h>
#include <CommonCrypto/CommonHmac.h>
#include "mongo/crypto/sha1_block.h"
#include "mongo/crypto/sha256_block.h"
namespace mongo {
using CDRinit = std::initializer_list<ConstDataRange>;
SHA1BlockTraits::HashType SHA1BlockTraits::computeHash(CDRinit input) {
CC_SHA1_CTX ctx;
CC_SHA1_Init(&ctx);
for (const auto& range : input) {
CC_SHA1_Update(&ctx, range.data(), range.length());
}
SHA1BlockTraits::HashType ret;
static_assert(sizeof(ret) == CC_SHA1_DIGEST_LENGTH,
"SHA1 HashType size doesn't match expected digest output size");
CC_SHA1_Final(ret.data(), &ctx);
return ret;
}
SHA256BlockTraits::HashType SHA256BlockTraits::computeHash(CDRinit input) {
CC_SHA256_CTX ctx;
CC_SHA256_Init(&ctx);
for (const auto& range : input) {
CC_SHA256_Update(&ctx, range.data(), range.length());
}
SHA256BlockTraits::HashType ret;
static_assert(sizeof(ret) == CC_SHA256_DIGEST_LENGTH,
"SHA256 HashType size doesn't match expected digest output size");
CC_SHA256_Final(ret.data(), &ctx);
return ret;
}
void SHA1BlockTraits::computeHmac(const uint8_t* key,
size_t keyLen,
const uint8_t* input,
size_t inputLen,
SHA1BlockTraits::HashType* const output) {
static_assert(sizeof(*output) == CC_SHA1_DIGEST_LENGTH,
"SHA1 HashType size doesn't match expected hmac output size");
CCHmacContext ctx;
CCHmacInit(&ctx, kCCHmacAlgSHA1, key, keyLen);
CCHmacUpdate(&ctx, input, inputLen);
CCHmacFinal(&ctx, output);
}
void SHA256BlockTraits::computeHmac(const uint8_t* key,
size_t keyLen,
const uint8_t* input,
size_t inputLen,
SHA256BlockTraits::HashType* const output) {
static_assert(sizeof(*output) == CC_SHA256_DIGEST_LENGTH,
"SHA256 HashType size doesn't match expected hmac output size");
CCHmacContext ctx;
CCHmacInit(&ctx, kCCHmacAlgSHA256, key, keyLen);
CCHmacUpdate(&ctx, input, inputLen);
CCHmacFinal(&ctx, output);
}
} // namespace mongo
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