1// Copyright 2014 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 CONTENT_CHILD_WEBCRYPTO_CRYPTO_DATA_H_
6#define CONTENT_CHILD_WEBCRYPTO_CRYPTO_DATA_H_
7
8#include <string>
9#include <vector>
10
11#include "base/basictypes.h"
12#include "content/common/content_export.h"
13#include "third_party/WebKit/public/platform/WebVector.h"
14
15namespace content {
16
17namespace webcrypto {
18
19// Helper to pass around a range of immutable bytes. This is conceptually
20// similar to base::StringPiece, but for crypto byte data.
21//
22// The data used at construction is NOT owned, and should remain valid as long
23// as the CryptoData is being used.
24class CONTENT_EXPORT CryptoData {
25 public:
26  // Constructs empty data.
27  CryptoData();
28
29  CryptoData(const unsigned char* bytes, unsigned int byte_length);
30
31  // These constructors do NOT copy the data. Hence the base pointer should
32  // remain valid for the lifetime of CryptoData.
33  explicit CryptoData(const std::vector<unsigned char>& bytes);
34  explicit CryptoData(const std::string& bytes);
35  explicit CryptoData(const blink::WebVector<unsigned char>& bytes);
36
37  const unsigned char* bytes() const { return bytes_; }
38  unsigned int byte_length() const { return byte_length_; }
39
40 private:
41  const unsigned char* const bytes_;
42  const unsigned int byte_length_;
43};
44
45}  // namespace webcrypto
46
47}  // namespace content
48
49#endif  // CONTENT_CHILD_WEBCRYPTO_CRYPTO_DATA_H_
50