1// Copyright (c) 2010 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CHROME_BROWSER_SYNC_UTIL_CRYPTO_HELPERS_H_ 6#define CHROME_BROWSER_SYNC_UTIL_CRYPTO_HELPERS_H_ 7#pragma once 8 9#include <string> 10#include <vector> 11 12// An object to handle calculation of MD5 sums. 13#include "base/basictypes.h" 14#include "base/md5.h" 15#include "base/port.h" 16 17class MD5Calculator { 18 protected: 19 MD5Context context_; 20 std::vector<uint8> bin_digest_; 21 22 void CalcDigest(); 23 public: 24 MD5Calculator(); 25 ~MD5Calculator(); 26 void AddData(const uint8* data, int length); 27 void AddData(const char* data, int length) { 28 AddData(reinterpret_cast<const uint8*>(data), length); 29 } 30 std::string GetHexDigest(); 31 const std::vector<uint8>& GetDigest(); 32 private: 33 DISALLOW_COPY_AND_ASSIGN(MD5Calculator); 34}; 35 36void GetRandomBytes(char* output, int output_length); 37std::string Generate128BitRandomHexString(); 38 39#endif // CHROME_BROWSER_SYNC_UTIL_CRYPTO_HELPERS_H_ 40