/src/x265/source/common/md5.h
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1 | | /***************************************************************************** |
2 | | * md5.h: Calculate MD5 |
3 | | ***************************************************************************** |
4 | | * Copyright (C) 2013-2020 MulticoreWare, Inc |
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_NS { |
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 | 0 | { |
53 | 0 | MD5Init(&m_state); |
54 | 0 | } |
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 | 0 | { |
62 | 0 | MD5Update(&m_state, buf, len); |
63 | 0 | } |
64 | | |
65 | | /** |
66 | | * flush any outstanding MD5 data, write the digest into digest. |
67 | | */ |
68 | | void finalize(unsigned char digest[16]) |
69 | 0 | { |
70 | 0 | MD5Final(&m_state, digest); |
71 | 0 | } |
72 | | |
73 | | private: |
74 | | |
75 | | MD5Context m_state; |
76 | | }; |
77 | | } |
78 | | |
79 | | #endif // ifndef X265_MD5_H |