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1 | /***************************************************************************** |
2 | * md5.h: Calculate MD5 | |
3 | ***************************************************************************** | |
4 | * Copyright (C) 2011-2012 x265 project | |
5 | * | |
6 | * Authors: Min Chen <chenm003@163.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. | |
20 | * | |
21 | * This program is also available under a commercial proprietary license. | |
22 | * For more information, contact us at chenm003@163.com. | |
23 | *****************************************************************************/ | |
24 | ||
25 | #ifndef X265_MD5_H | |
26 | #define X265_MD5_H | |
27 | ||
28 | #include "common.h" | |
29 | ||
30 | namespace x265 { | |
31 | //private x265 namespace | |
32 | ||
33 | typedef struct MD5Context | |
34 | { | |
35 | uint32_t buf[4]; | |
36 | uint32_t bits[2]; | |
37 | unsigned char in[64]; | |
38 | } MD5Context; | |
39 | ||
40 | void MD5Init(MD5Context *context); | |
41 | void MD5Update(MD5Context *context, unsigned char *buf, uint32_t len); | |
42 | void MD5Final(MD5Context *ctx, uint8_t *digest); | |
43 | ||
44 | class MD5 | |
45 | { | |
46 | public: | |
47 | ||
48 | /** | |
49 | * initialize digest state | |
50 | */ | |
51 | MD5() | |
52 | { | |
53 | MD5Init(&m_state); | |
54 | } | |
55 | ||
56 | /** | |
57 | * compute digest over buf of length len. | |
58 | * multiple calls may extend the digest over more data. | |
59 | */ | |
60 | void update(unsigned char *buf, unsigned len) | |
61 | { | |
62 | MD5Update(&m_state, buf, len); | |
63 | } | |
64 | ||
65 | /** | |
66 | * flush any outstanding MD5 data, write the digest into digest. | |
67 | */ | |
68 | void finalize(unsigned char digest[16]) | |
69 | { | |
70 | MD5Final(&m_state, digest); | |
71 | } | |
72 | ||
73 | private: | |
74 | ||
75 | MD5Context m_state; | |
76 | }; | |
77 | } | |
78 | ||
79 | #endif // ifndef X265_MD5_H |