| /* |
| * Copyright (C) 2016 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "CryptoDigest.h" |
| |
| #include <windows.h> |
| #include <wincrypt.h> |
| |
| namespace PAL { |
| |
| struct CryptoDigestContext { |
| CryptoDigest::Algorithm algorithm; |
| HCRYPTPROV hContext { 0 }; |
| HCRYPTHASH hHash { 0 }; |
| }; |
| |
| CryptoDigest::CryptoDigest() |
| : m_context(new CryptoDigestContext) |
| { |
| } |
| |
| CryptoDigest::~CryptoDigest() |
| { |
| if (HCRYPTHASH hHash = m_context->hHash) |
| CryptDestroyHash(hHash); |
| if (HCRYPTPROV hContext = m_context->hContext) |
| CryptReleaseContext(hContext, 0); |
| } |
| |
| std::unique_ptr<CryptoDigest> CryptoDigest::create(Algorithm algorithm) |
| { |
| std::unique_ptr<CryptoDigest> digest(new CryptoDigest); |
| digest->m_context->algorithm = algorithm; |
| if (!CryptAcquireContext(&digest->m_context->hContext, nullptr, nullptr /* use default provider */, PROV_RSA_AES, CRYPT_VERIFYCONTEXT)) |
| return nullptr; |
| bool succeeded = false; |
| switch (algorithm) { |
| case CryptoDigest::Algorithm::SHA_1: { |
| succeeded = CryptCreateHash(digest->m_context->hContext, CALG_SHA1, 0, 0, &digest->m_context->hHash); |
| break; |
| } |
| case CryptoDigest::Algorithm::SHA_256: { |
| succeeded = CryptCreateHash(digest->m_context->hContext, CALG_SHA_256, 0, 0, &digest->m_context->hHash); |
| break; |
| } |
| case CryptoDigest::Algorithm::SHA_384: { |
| succeeded = CryptCreateHash(digest->m_context->hContext, CALG_SHA_384, 0, 0, &digest->m_context->hHash); |
| break; |
| } |
| case CryptoDigest::Algorithm::SHA_512: { |
| succeeded = CryptCreateHash(digest->m_context->hContext, CALG_SHA_512, 0, 0, &digest->m_context->hHash); |
| break; |
| } |
| } |
| if (succeeded) |
| return digest; |
| return nullptr; |
| } |
| |
| void CryptoDigest::addBytes(const void* input, size_t length) |
| { |
| if (!input || !length) |
| return; |
| RELEASE_ASSERT(CryptHashData(m_context->hHash, reinterpret_cast<const BYTE*>(input), length, 0)); |
| } |
| |
| Vector<uint8_t> CryptoDigest::computeHash() |
| { |
| Vector<uint8_t> result; |
| DWORD digestLengthBuffer; |
| DWORD digestLengthBufferSize = sizeof(digestLengthBuffer); |
| |
| RELEASE_ASSERT(CryptGetHashParam(m_context->hHash, HP_HASHSIZE, reinterpret_cast<BYTE*>(&digestLengthBuffer), &digestLengthBufferSize, 0)); |
| result.resize(digestLengthBuffer); |
| |
| RELEASE_ASSERT(CryptGetHashParam(m_context->hHash, HP_HASHVAL, result.data(), &digestLengthBuffer, 0)); |
| RELEASE_ASSERT(result.size() == digestLengthBuffer); |
| return result; |
| } |
| |
| } // namespace PAL |