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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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/crypto/sha1_block.h"
#include "mongo/crypto/sha256_block.h"
#include "mongo/crypto/sha512_block.h"
#include "mongo/config.h"
#include "mongo/util/assert_util.h"
#ifdef MONGO_CONFIG_SSL
#error This file should not be included if compiling with SSL support
#endif
#include "tomcrypt.h"
namespace mongo {
namespace {
/**
* Computes a SHA hash of 'input'.
*/
template <typename HashType,
int (*Init)(hash_state*),
int (*Process)(hash_state*, const unsigned char*, unsigned long),
int (*Done)(hash_state*, unsigned char*)>
void computeHashImpl(std::initializer_list<ConstDataRange> input, HashType* const output) {
hash_state hashState;
fassert(40381,
Init(&hashState) == CRYPT_OK &&
std::all_of(begin(input),
end(input),
[&](const auto& i) {
return Process(&hashState,
reinterpret_cast<const unsigned char*>(i.data()),
i.length()) == CRYPT_OK;
}) &&
Done(&hashState, output->data()) == CRYPT_OK);
}
/*
* Computes a HMAC SHA'd keyed hash of 'input' using the key 'key', writes output into 'output'.
*/
template <typename HashType>
void computeHmacImpl(const ltc_hash_descriptor* desc,
const uint8_t* key,
size_t keyLen,
std::initializer_list<ConstDataRange> input,
HashType* const output) {
invariant(key);
invariant(
std::all_of(begin(input), end(input), [&](const auto& i) { return i.data() != nullptr; }));
static const struct Magic {
Magic(const ltc_hash_descriptor* desc) {
register_hash(desc);
hashId = find_hash(desc->name);
}
int hashId;
} magic(desc);
Hmac_state hmacState;
unsigned long shaHashLen = sizeof(HashType);
fassert(40382,
hmac_init(&hmacState, magic.hashId, key, keyLen) == CRYPT_OK &&
std::all_of(begin(input),
end(input),
[&](const auto& i) {
return hmac_process(
&hmacState,
reinterpret_cast<const unsigned char*>(i.data()),
i.length()) == CRYPT_OK;
}) &&
hmac_done(&hmacState, output->data(), &shaHashLen) == CRYPT_OK);
}
} // namespace
void SHA1BlockTraits::computeHash(std::initializer_list<ConstDataRange> input,
HashType* const output) {
computeHashImpl<SHA1BlockTraits::HashType, sha1_init, sha1_process, sha1_done>(input, output);
}
void SHA256BlockTraits::computeHash(std::initializer_list<ConstDataRange> input,
HashType* const output) {
computeHashImpl<SHA256BlockTraits::HashType, sha256_init, sha256_process, sha256_done>(input,
output);
}
void SHA512BlockTraits::computeHash(std::initializer_list<ConstDataRange> input,
HashType* const output) {
computeHashImpl<SHA512BlockTraits::HashType, sha512_init, sha512_process, sha512_done>(input,
output);
}
void SHA1BlockTraits::computeHmac(const uint8_t* key,
size_t keyLen,
std::initializer_list<ConstDataRange> input,
HashType* const output) {
return computeHmacImpl<HashType>(&sha1_desc, key, keyLen, input, output);
}
void SHA256BlockTraits::computeHmac(const uint8_t* key,
size_t keyLen,
std::initializer_list<ConstDataRange> input,
HashType* const output) {
return computeHmacImpl<HashType>(&sha256_desc, key, keyLen, input, output);
}
void SHA512BlockTraits::computeHmac(const uint8_t* key,
size_t keyLen,
std::initializer_list<ConstDataRange> input,
HashType* const output) {
return computeHmacImpl<HashType>(&sha512_desc, key, keyLen, input, output);
}
} // namespace mongo
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