* Copyright (c) 2021 Huawei Device Co., Ltd.
* 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 "pkg_algo_digest.h"
#include "openssl/sha.h"
#include "pkg_algorithm.h"
#include "pkg_utils.h"
#include "zlib.h"
namespace Hpackage {
size_t DigestAlgorithm::GetDigestLen(int8_t digestMethod)
{
static size_t digestLens[PKG_DIGEST_TYPE_MAX] = {0, DIGEST_CRC_LEN, DIGEST_SHA256_LEN, DIGEST_SHA256_LEN};
if (digestMethod < PKG_DIGEST_TYPE_MAX) {
return digestLens[digestMethod];
}
return 0;
}
size_t DigestAlgorithm::GetSignatureLen(int8_t digestMethod)
{
static size_t signatureLens[PKG_DIGEST_TYPE_MAX] = {0, 0, SIGN_SHA256_LEN, SIGN_SHA384_LEN};
if (digestMethod < PKG_DIGEST_TYPE_MAX) {
return signatureLens[digestMethod];
}
return SIGN_SHA256_LEN;
}
uint8_t DigestAlgorithm::GetDigestMethod(const std::string version)
{
return PKG_DIGEST_TYPE_SHA256;
}
int32_t Crc32Algorithm::Init()
{
crc32_ = 0;
return PKG_SUCCESS;
}
int32_t Crc32Algorithm::Update(const PkgBuffer &buffer, size_t size)
{
if (buffer.buffer == nullptr) {
PKG_LOGE("Param null!");
return PKG_INVALID_PARAM;
}
crc32_ = crc32(crc32_, buffer.buffer, size);
return PKG_SUCCESS;
}
int32_t Crc32Algorithm::Final(PkgBuffer &result)
{
if (result.buffer == nullptr) {
PKG_LOGE("Param null!");
return PKG_INVALID_PARAM;
}
if (result.length != sizeof(uint32_t)) {
PKG_LOGE("Invalid size %zu", result.length);
return PKG_INVALID_PARAM;
}
WriteLE32(result.buffer, crc32_);
return PKG_SUCCESS;
}
int32_t Crc32Algorithm::Calculate(PkgBuffer &result, const PkgBuffer &buffer, size_t size)
{
if (result.buffer == nullptr || buffer.buffer == nullptr) {
PKG_LOGE("Param null!");
return PKG_INVALID_PARAM;
}
if (result.length != sizeof(uint32_t)) {
PKG_LOGE("Invalid size %zu", result.length);
return PKG_INVALID_PARAM;
}
auto crc = reinterpret_cast<uint32_t *>(result.buffer);
*crc = crc32(*crc, buffer.buffer, size);
return PKG_SUCCESS;
}
int32_t Sha256Algorithm::Init()
{
SHA256_Init(&sha256Ctx_);
return PKG_SUCCESS;
}
int32_t Sha256Algorithm::Update(const PkgBuffer &buffer, size_t size)
{
if (buffer.buffer == nullptr) {
PKG_LOGE("Param null!");
return PKG_INVALID_PARAM;
}
SHA256_Update(&sha256Ctx_, buffer.buffer, size);
return PKG_SUCCESS;
}
int32_t Sha256Algorithm::Final(PkgBuffer &result)
{
if (result.buffer == nullptr || result.length != DIGEST_SHA256_LEN) {
PKG_LOGE("Param context null!");
return PKG_INVALID_PARAM;
}
SHA256_Final(result.buffer, &sha256Ctx_);
return PKG_SUCCESS;
}
int32_t Sha256Algorithm::Calculate(PkgBuffer &result, const PkgBuffer &buffer, size_t size)
{
if (result.buffer == nullptr || result.length != DIGEST_SHA256_LEN) {
PKG_LOGE("Param context null!");
return PKG_INVALID_PARAM;
}
if (buffer.buffer == nullptr) {
PKG_LOGE("Param null!");
return PKG_INVALID_PARAM;
}
SHA256_Init(&sha256Ctx_);
SHA256_Update(&sha256Ctx_, buffer.buffer, size);
SHA256_Final(result.buffer, &sha256Ctx_);
return PKG_SUCCESS;
}
int32_t Sha384Algorithm::Init()
{
SHA512_Init(&shaCtx_);
return PKG_SUCCESS;
}
int32_t Sha384Algorithm::Update(const PkgBuffer &buffer, size_t size)
{
if (buffer.buffer == nullptr) {
PKG_LOGE("Param null!");
return PKG_INVALID_PARAM;
}
SHA384_Update(&shaCtx_, buffer.buffer, size);
return PKG_SUCCESS;
}
int32_t Sha384Algorithm::Final(PkgBuffer &result)
{
if (result.buffer == nullptr || result.length != DIGEST_SHA384_LEN) {
PKG_LOGE("Param context null!");
return PKG_INVALID_PARAM;
}
SHA384_Final(result.buffer, &shaCtx_);
return PKG_SUCCESS;
}
int32_t Sha384Algorithm::Calculate(PkgBuffer &result, const PkgBuffer &buffer, size_t size)
{
if (result.buffer == nullptr || result.length != DIGEST_SHA384_LEN) {
PKG_LOGE("Param context null!");
return PKG_INVALID_PARAM;
}
if (buffer.buffer == nullptr) {
PKG_LOGE("Param null!");
return PKG_INVALID_PARAM;
}
SHA512_Init(&shaCtx_);
SHA384_Update(&shaCtx_, buffer.buffer, size);
SHA384_Final(result.buffer, &shaCtx_);
return PKG_SUCCESS;
}
DigestAlgorithm::DigestAlgorithmPtr PkgAlgorithmFactory::GetDigestAlgorithm(uint8_t type)
{
switch (type) {
case PKG_DIGEST_TYPE_CRC:
return std::make_shared<Crc32Algorithm>();
case PKG_DIGEST_TYPE_SHA256:
case PKG_DIGEST_TYPE_SHA384:
return std::make_shared<Sha256Algorithm>();
default:
return std::make_shared<DigestAlgorithm>();
}
return nullptr;
}
}