1/* 2 * Copyright 2012 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11#ifndef WEBRTC_BASE_MD5DIGEST_H_ 12#define WEBRTC_BASE_MD5DIGEST_H_ 13 14#include "webrtc/base/md5.h" 15#include "webrtc/base/messagedigest.h" 16 17namespace rtc { 18 19// A simple wrapper for our MD5 implementation. 20class Md5Digest : public MessageDigest { 21 public: 22 enum { kSize = 16 }; 23 Md5Digest() { 24 MD5Init(&ctx_); 25 } 26 virtual size_t Size() const { 27 return kSize; 28 } 29 virtual void Update(const void* buf, size_t len) { 30 MD5Update(&ctx_, static_cast<const uint8*>(buf), len); 31 } 32 virtual size_t Finish(void* buf, size_t len) { 33 if (len < kSize) { 34 return 0; 35 } 36 MD5Final(&ctx_, static_cast<uint8*>(buf)); 37 MD5Init(&ctx_); // Reset for next use. 38 return kSize; 39 } 40 private: 41 MD5_CTX ctx_; 42}; 43 44} // namespace rtc 45 46#endif // WEBRTC_BASE_MD5DIGEST_H_ 47