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