1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#pragma once
32
33#include <array>
34#include <wtf/Vector.h>
35
36#if PLATFORM(COCOA)
37#include <CommonCrypto/CommonDigest.h>
38#endif
39
40namespace WTF {
41
42class MD5 {
43 WTF_MAKE_FAST_ALLOCATED;
44public:
45 WTF_EXPORT_PRIVATE MD5();
46
47 void addBytes(const Vector<uint8_t>& input)
48 {
49 addBytes(input.data(), input.size());
50 }
51 WTF_EXPORT_PRIVATE void addBytes(const uint8_t* input, size_t length);
52
53 // Size of the SHA1 hash
54 WTF_EXPORT_PRIVATE static constexpr size_t hashSize = 16;
55
56 // type for computing MD5 hash
57 typedef std::array<uint8_t, hashSize> Digest;
58
59 // checksum has a side effect of resetting the state of the object.
60 WTF_EXPORT_PRIVATE void checksum(Digest&);
61
62private:
63#if PLATFORM(COCOA)
64 CC_MD5_CTX m_context;
65#else
66 uint32_t m_buf[4];
67 uint32_t m_bits[2];
68 uint8_t m_in[64];
69#endif
70};
71
72} // namespace WTF
73
74using WTF::MD5;
75