83eed0a886
Changes include: * CPU check has been broken up into a number of small libraries * BoringSSL option has been removed * Better abseil integration
96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
// Copyright 2020 Google LLC
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "hasher.h"
|
|
|
|
#include "crc32c.h"
|
|
#include "utils.h"
|
|
#include "third_party/farmhash/src/farmhash.h"
|
|
#include <openssl/crypto.h>
|
|
#include <openssl/evp.h>
|
|
#include <zlib.h>
|
|
|
|
namespace cpu_check {
|
|
namespace {
|
|
std::string OpenSSL_Hash(const MalignBuffer &s, const EVP_MD *type) {
|
|
EVP_MD_CTX *ctx;
|
|
ctx = EVP_MD_CTX_create();
|
|
EVP_DigestInit_ex(ctx, type, nullptr);
|
|
std::string hash;
|
|
hash.resize(EVP_MD_CTX_size(ctx));
|
|
MalignBuffer::InitializeMemoryForSanitizer(hash.data(), EVP_MD_CTX_size(ctx));
|
|
EVP_DigestUpdate(ctx, s.data(), s.size());
|
|
EVP_DigestFinal_ex(ctx, (uint8_t *)&hash[0], nullptr);
|
|
EVP_MD_CTX_destroy(ctx);
|
|
return HexStr(hash);
|
|
}
|
|
} // namespace
|
|
|
|
std::string Md5::Hash(const MalignBuffer &b) const {
|
|
return OpenSSL_Hash(b, EVP_md5());
|
|
}
|
|
|
|
std::string Sha1::Hash(const MalignBuffer &b) const {
|
|
return OpenSSL_Hash(b, EVP_sha1());
|
|
}
|
|
|
|
std::string Sha256::Hash(const MalignBuffer &b) const {
|
|
return OpenSSL_Hash(b, EVP_sha256());
|
|
}
|
|
|
|
std::string Sha512::Hash(const MalignBuffer &b) const {
|
|
return OpenSSL_Hash(b, EVP_sha512());
|
|
}
|
|
|
|
std::string Adler32::Hash(const MalignBuffer &b) const {
|
|
uLong c = adler32(0, Z_NULL, 0);
|
|
c = adler32(c, reinterpret_cast<const Bytef *>(b.data()), b.size());
|
|
return HexData(reinterpret_cast<const char *>(&c), sizeof(c));
|
|
}
|
|
|
|
std::string Crc32::Hash(const MalignBuffer &b) const {
|
|
uLong c = crc32(0, Z_NULL, 0);
|
|
c = crc32(c, reinterpret_cast<const Bytef *>(b.data()), b.size());
|
|
return HexData(reinterpret_cast<const char *>(&c), sizeof(c));
|
|
}
|
|
|
|
std::string Crc32C::Hash(const MalignBuffer &b) const {
|
|
const uint32_t c = crc32c(b.data(), b.size());
|
|
return HexData(reinterpret_cast<const char *>(&c), sizeof(c));
|
|
}
|
|
|
|
std::string FarmHash64::Hash(const MalignBuffer &b) const {
|
|
const uint64_t c = util::Hash64(b.data(), b.size());
|
|
return HexData(reinterpret_cast<const char *>(&c), sizeof(c));
|
|
}
|
|
|
|
Hashers::Hashers() {
|
|
hashers_.emplace_back(new Md5);
|
|
hashers_.emplace_back(new Sha1);
|
|
hashers_.emplace_back(new Sha256);
|
|
hashers_.emplace_back(new Sha512);
|
|
hashers_.emplace_back(new Adler32);
|
|
hashers_.emplace_back(new Crc32);
|
|
hashers_.emplace_back(new Crc32C);
|
|
hashers_.emplace_back(new FarmHash64);
|
|
}
|
|
|
|
const Hasher &Hashers::RandomHasher(uint64_t seed) const {
|
|
std::knuth_b rng(seed);
|
|
const size_t k =
|
|
std::uniform_int_distribution<size_t>(0, hashers_.size() - 1)(rng);
|
|
return *hashers_[k];
|
|
}
|
|
} // namespace cpu_check
|