| /* |
| * Copyright (c) 2016, The OpenThread Authors. |
| * 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. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT HOLDER OR 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. |
| */ |
| |
| /** |
| * @file |
| * This file implements SHA-256. |
| */ |
| |
| #include "sha256.hpp" |
| |
| #include "common/debug.hpp" |
| #include "common/error.hpp" |
| #include "common/message.hpp" |
| |
| namespace ot { |
| namespace Crypto { |
| |
| Sha256::Sha256(void) |
| { |
| mContext.mContext = mContextStorage; |
| mContext.mContextSize = sizeof(mContextStorage); |
| SuccessOrAssert(otPlatCryptoSha256Init(&mContext)); |
| } |
| |
| Sha256::~Sha256(void) |
| { |
| SuccessOrAssert(otPlatCryptoSha256Deinit(&mContext)); |
| } |
| |
| void Sha256::Start(void) |
| { |
| SuccessOrAssert(otPlatCryptoSha256Start(&mContext)); |
| } |
| |
| void Sha256::Update(const void *aBuf, uint16_t aBufLength) |
| { |
| SuccessOrAssert(otPlatCryptoSha256Update(&mContext, aBuf, aBufLength)); |
| } |
| |
| void Sha256::Update(const Message &aMessage, uint16_t aOffset, uint16_t aLength) |
| { |
| Message::Chunk chunk; |
| |
| aMessage.GetFirstChunk(aOffset, aLength, chunk); |
| |
| while (chunk.GetLength() > 0) |
| { |
| Update(chunk.GetBytes(), chunk.GetLength()); |
| aMessage.GetNextChunk(aLength, chunk); |
| } |
| } |
| |
| void Sha256::Finish(Hash &aHash) |
| { |
| SuccessOrAssert(otPlatCryptoSha256Finish(&mContext, aHash.m8, Hash::kSize)); |
| } |
| |
| } // namespace Crypto |
| } // namespace ot |