1 | /* The copyright in this software is being made available under the BSD |
---|
2 | * License, included below. This software may be subject to other third party |
---|
3 | * and contributor rights, including patent rights, and no such rights are |
---|
4 | * granted under this license. |
---|
5 | * |
---|
6 | * Copyright (c) 2010-2015, ITU/ISO/IEC |
---|
7 | * All rights reserved. |
---|
8 | * |
---|
9 | * Redistribution and use in source and binary forms, with or without |
---|
10 | * modification, are permitted provided that the following conditions are met: |
---|
11 | * |
---|
12 | * * Redistributions of source code must retain the above copyright notice, |
---|
13 | * this list of conditions and the following disclaimer. |
---|
14 | * * Redistributions in binary form must reproduce the above copyright notice, |
---|
15 | * this list of conditions and the following disclaimer in the documentation |
---|
16 | * and/or other materials provided with the distribution. |
---|
17 | * * Neither the name of the ITU/ISO/IEC nor the names of its contributors may |
---|
18 | * be used to endorse or promote products derived from this software without |
---|
19 | * specific prior written permission. |
---|
20 | * |
---|
21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
---|
22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
---|
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS |
---|
25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
---|
26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
---|
27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
---|
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
---|
29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
---|
30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
---|
31 | * THE POSSIBILITY OF SUCH DAMAGE. |
---|
32 | */ |
---|
33 | #pragma once |
---|
34 | #include "libmd5.h" |
---|
35 | |
---|
36 | //! \ingroup libMD5 |
---|
37 | //! \{ |
---|
38 | |
---|
39 | class MD5 |
---|
40 | { |
---|
41 | public: |
---|
42 | /** |
---|
43 | * initialize digest state |
---|
44 | */ |
---|
45 | MD5() |
---|
46 | { |
---|
47 | MD5Init(&m_state); |
---|
48 | } |
---|
49 | |
---|
50 | /** |
---|
51 | * compute digest over buf of length len. |
---|
52 | * multiple calls may extend the digest over more data. |
---|
53 | */ |
---|
54 | void update(unsigned char *buf, unsigned len) |
---|
55 | { |
---|
56 | MD5Update(&m_state, buf, len); |
---|
57 | } |
---|
58 | |
---|
59 | /** |
---|
60 | * flush any outstanding MD5 data, write the digest into digest. |
---|
61 | */ |
---|
62 | void finalize(unsigned char digest[16]) |
---|
63 | { |
---|
64 | MD5Final(digest, &m_state); |
---|
65 | } |
---|
66 | |
---|
67 | private: |
---|
68 | context_md5_t m_state; |
---|
69 | }; |
---|
70 | |
---|
71 | |
---|
72 | /** |
---|
73 | * Produce an ascii(hex) representation of picture digest. |
---|
74 | * |
---|
75 | * Returns: a statically allocated null-terminated string. DO NOT FREE. |
---|
76 | */ |
---|
77 | inline const char* |
---|
78 | digestToString(const unsigned char digest[3][16], int numChar) |
---|
79 | { |
---|
80 | const char* hex = "0123456789abcdef"; |
---|
81 | static char string[99]; |
---|
82 | int cnt=0; |
---|
83 | for(int yuvIdx=0; yuvIdx<3; yuvIdx++) |
---|
84 | { |
---|
85 | for (int i = 0; i < numChar; i++) |
---|
86 | { |
---|
87 | string[cnt++] = hex[digest[yuvIdx][i] >> 4]; |
---|
88 | string[cnt++] = hex[digest[yuvIdx][i] & 0xf]; |
---|
89 | } |
---|
90 | string[cnt++] = ','; |
---|
91 | } |
---|
92 | |
---|
93 | string[cnt-1] = '\0'; |
---|
94 | return string; |
---|
95 | } |
---|
96 | //! \} |
---|