FFmpeg
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blowfish.c
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1 /*
2  * Blowfish algorithm
3  * Copyright (c) 2012 Samuel Pitoiset
4  *
5  * loosely based on Paul Kocher's implementation
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include "avutil.h"
25 #include "common.h"
26 #include "intreadwrite.h"
27 #include "mem.h"
28 #include "blowfish.h"
29 
30 static const uint32_t orig_p[AV_BF_ROUNDS + 2] = {
31  0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344,
32  0xA4093822, 0x299F31D0, 0x082EFA98, 0xEC4E6C89,
33  0x452821E6, 0x38D01377, 0xBE5466CF, 0x34E90C6C,
34  0xC0AC29B7, 0xC97C50DD, 0x3F84D5B5, 0xB5470917,
35  0x9216D5D9, 0x8979FB1B
36 };
37 
38 static const uint32_t orig_s[4][256] = {
39  { 0xD1310BA6, 0x98DFB5AC, 0x2FFD72DB, 0xD01ADFB7,
40  0xB8E1AFED, 0x6A267E96, 0xBA7C9045, 0xF12C7F99,
41  0x24A19947, 0xB3916CF7, 0x0801F2E2, 0x858EFC16,
42  0x636920D8, 0x71574E69, 0xA458FEA3, 0xF4933D7E,
43  0x0D95748F, 0x728EB658, 0x718BCD58, 0x82154AEE,
44  0x7B54A41D, 0xC25A59B5, 0x9C30D539, 0x2AF26013,
45  0xC5D1B023, 0x286085F0, 0xCA417918, 0xB8DB38EF,
46  0x8E79DCB0, 0x603A180E, 0x6C9E0E8B, 0xB01E8A3E,
47  0xD71577C1, 0xBD314B27, 0x78AF2FDA, 0x55605C60,
48  0xE65525F3, 0xAA55AB94, 0x57489862, 0x63E81440,
49  0x55CA396A, 0x2AAB10B6, 0xB4CC5C34, 0x1141E8CE,
50  0xA15486AF, 0x7C72E993, 0xB3EE1411, 0x636FBC2A,
51  0x2BA9C55D, 0x741831F6, 0xCE5C3E16, 0x9B87931E,
52  0xAFD6BA33, 0x6C24CF5C, 0x7A325381, 0x28958677,
53  0x3B8F4898, 0x6B4BB9AF, 0xC4BFE81B, 0x66282193,
54  0x61D809CC, 0xFB21A991, 0x487CAC60, 0x5DEC8032,
55  0xEF845D5D, 0xE98575B1, 0xDC262302, 0xEB651B88,
56  0x23893E81, 0xD396ACC5, 0x0F6D6FF3, 0x83F44239,
57  0x2E0B4482, 0xA4842004, 0x69C8F04A, 0x9E1F9B5E,
58  0x21C66842, 0xF6E96C9A, 0x670C9C61, 0xABD388F0,
59  0x6A51A0D2, 0xD8542F68, 0x960FA728, 0xAB5133A3,
60  0x6EEF0B6C, 0x137A3BE4, 0xBA3BF050, 0x7EFB2A98,
61  0xA1F1651D, 0x39AF0176, 0x66CA593E, 0x82430E88,
62  0x8CEE8619, 0x456F9FB4, 0x7D84A5C3, 0x3B8B5EBE,
63  0xE06F75D8, 0x85C12073, 0x401A449F, 0x56C16AA6,
64  0x4ED3AA62, 0x363F7706, 0x1BFEDF72, 0x429B023D,
65  0x37D0D724, 0xD00A1248, 0xDB0FEAD3, 0x49F1C09B,
66  0x075372C9, 0x80991B7B, 0x25D479D8, 0xF6E8DEF7,
67  0xE3FE501A, 0xB6794C3B, 0x976CE0BD, 0x04C006BA,
68  0xC1A94FB6, 0x409F60C4, 0x5E5C9EC2, 0x196A2463,
69  0x68FB6FAF, 0x3E6C53B5, 0x1339B2EB, 0x3B52EC6F,
70  0x6DFC511F, 0x9B30952C, 0xCC814544, 0xAF5EBD09,
71  0xBEE3D004, 0xDE334AFD, 0x660F2807, 0x192E4BB3,
72  0xC0CBA857, 0x45C8740F, 0xD20B5F39, 0xB9D3FBDB,
73  0x5579C0BD, 0x1A60320A, 0xD6A100C6, 0x402C7279,
74  0x679F25FE, 0xFB1FA3CC, 0x8EA5E9F8, 0xDB3222F8,
75  0x3C7516DF, 0xFD616B15, 0x2F501EC8, 0xAD0552AB,
76  0x323DB5FA, 0xFD238760, 0x53317B48, 0x3E00DF82,
77  0x9E5C57BB, 0xCA6F8CA0, 0x1A87562E, 0xDF1769DB,
78  0xD542A8F6, 0x287EFFC3, 0xAC6732C6, 0x8C4F5573,
79  0x695B27B0, 0xBBCA58C8, 0xE1FFA35D, 0xB8F011A0,
80  0x10FA3D98, 0xFD2183B8, 0x4AFCB56C, 0x2DD1D35B,
81  0x9A53E479, 0xB6F84565, 0xD28E49BC, 0x4BFB9790,
82  0xE1DDF2DA, 0xA4CB7E33, 0x62FB1341, 0xCEE4C6E8,
83  0xEF20CADA, 0x36774C01, 0xD07E9EFE, 0x2BF11FB4,
84  0x95DBDA4D, 0xAE909198, 0xEAAD8E71, 0x6B93D5A0,
85  0xD08ED1D0, 0xAFC725E0, 0x8E3C5B2F, 0x8E7594B7,
86  0x8FF6E2FB, 0xF2122B64, 0x8888B812, 0x900DF01C,
87  0x4FAD5EA0, 0x688FC31C, 0xD1CFF191, 0xB3A8C1AD,
88  0x2F2F2218, 0xBE0E1777, 0xEA752DFE, 0x8B021FA1,
89  0xE5A0CC0F, 0xB56F74E8, 0x18ACF3D6, 0xCE89E299,
90  0xB4A84FE0, 0xFD13E0B7, 0x7CC43B81, 0xD2ADA8D9,
91  0x165FA266, 0x80957705, 0x93CC7314, 0x211A1477,
92  0xE6AD2065, 0x77B5FA86, 0xC75442F5, 0xFB9D35CF,
93  0xEBCDAF0C, 0x7B3E89A0, 0xD6411BD3, 0xAE1E7E49,
94  0x00250E2D, 0x2071B35E, 0x226800BB, 0x57B8E0AF,
95  0x2464369B, 0xF009B91E, 0x5563911D, 0x59DFA6AA,
96  0x78C14389, 0xD95A537F, 0x207D5BA2, 0x02E5B9C5,
97  0x83260376, 0x6295CFA9, 0x11C81968, 0x4E734A41,
98  0xB3472DCA, 0x7B14A94A, 0x1B510052, 0x9A532915,
99  0xD60F573F, 0xBC9BC6E4, 0x2B60A476, 0x81E67400,
100  0x08BA6FB5, 0x571BE91F, 0xF296EC6B, 0x2A0DD915,
101  0xB6636521, 0xE7B9F9B6, 0xFF34052E, 0xC5855664,
102  0x53B02D5D, 0xA99F8FA1, 0x08BA4799, 0x6E85076A },
103  { 0x4B7A70E9, 0xB5B32944, 0xDB75092E, 0xC4192623,
104  0xAD6EA6B0, 0x49A7DF7D, 0x9CEE60B8, 0x8FEDB266,
105  0xECAA8C71, 0x699A17FF, 0x5664526C, 0xC2B19EE1,
106  0x193602A5, 0x75094C29, 0xA0591340, 0xE4183A3E,
107  0x3F54989A, 0x5B429D65, 0x6B8FE4D6, 0x99F73FD6,
108  0xA1D29C07, 0xEFE830F5, 0x4D2D38E6, 0xF0255DC1,
109  0x4CDD2086, 0x8470EB26, 0x6382E9C6, 0x021ECC5E,
110  0x09686B3F, 0x3EBAEFC9, 0x3C971814, 0x6B6A70A1,
111  0x687F3584, 0x52A0E286, 0xB79C5305, 0xAA500737,
112  0x3E07841C, 0x7FDEAE5C, 0x8E7D44EC, 0x5716F2B8,
113  0xB03ADA37, 0xF0500C0D, 0xF01C1F04, 0x0200B3FF,
114  0xAE0CF51A, 0x3CB574B2, 0x25837A58, 0xDC0921BD,
115  0xD19113F9, 0x7CA92FF6, 0x94324773, 0x22F54701,
116  0x3AE5E581, 0x37C2DADC, 0xC8B57634, 0x9AF3DDA7,
117  0xA9446146, 0x0FD0030E, 0xECC8C73E, 0xA4751E41,
118  0xE238CD99, 0x3BEA0E2F, 0x3280BBA1, 0x183EB331,
119  0x4E548B38, 0x4F6DB908, 0x6F420D03, 0xF60A04BF,
120  0x2CB81290, 0x24977C79, 0x5679B072, 0xBCAF89AF,
121  0xDE9A771F, 0xD9930810, 0xB38BAE12, 0xDCCF3F2E,
122  0x5512721F, 0x2E6B7124, 0x501ADDE6, 0x9F84CD87,
123  0x7A584718, 0x7408DA17, 0xBC9F9ABC, 0xE94B7D8C,
124  0xEC7AEC3A, 0xDB851DFA, 0x63094366, 0xC464C3D2,
125  0xEF1C1847, 0x3215D908, 0xDD433B37, 0x24C2BA16,
126  0x12A14D43, 0x2A65C451, 0x50940002, 0x133AE4DD,
127  0x71DFF89E, 0x10314E55, 0x81AC77D6, 0x5F11199B,
128  0x043556F1, 0xD7A3C76B, 0x3C11183B, 0x5924A509,
129  0xF28FE6ED, 0x97F1FBFA, 0x9EBABF2C, 0x1E153C6E,
130  0x86E34570, 0xEAE96FB1, 0x860E5E0A, 0x5A3E2AB3,
131  0x771FE71C, 0x4E3D06FA, 0x2965DCB9, 0x99E71D0F,
132  0x803E89D6, 0x5266C825, 0x2E4CC978, 0x9C10B36A,
133  0xC6150EBA, 0x94E2EA78, 0xA5FC3C53, 0x1E0A2DF4,
134  0xF2F74EA7, 0x361D2B3D, 0x1939260F, 0x19C27960,
135  0x5223A708, 0xF71312B6, 0xEBADFE6E, 0xEAC31F66,
136  0xE3BC4595, 0xA67BC883, 0xB17F37D1, 0x018CFF28,
137  0xC332DDEF, 0xBE6C5AA5, 0x65582185, 0x68AB9802,
138  0xEECEA50F, 0xDB2F953B, 0x2AEF7DAD, 0x5B6E2F84,
139  0x1521B628, 0x29076170, 0xECDD4775, 0x619F1510,
140  0x13CCA830, 0xEB61BD96, 0x0334FE1E, 0xAA0363CF,
141  0xB5735C90, 0x4C70A239, 0xD59E9E0B, 0xCBAADE14,
142  0xEECC86BC, 0x60622CA7, 0x9CAB5CAB, 0xB2F3846E,
143  0x648B1EAF, 0x19BDF0CA, 0xA02369B9, 0x655ABB50,
144  0x40685A32, 0x3C2AB4B3, 0x319EE9D5, 0xC021B8F7,
145  0x9B540B19, 0x875FA099, 0x95F7997E, 0x623D7DA8,
146  0xF837889A, 0x97E32D77, 0x11ED935F, 0x16681281,
147  0x0E358829, 0xC7E61FD6, 0x96DEDFA1, 0x7858BA99,
148  0x57F584A5, 0x1B227263, 0x9B83C3FF, 0x1AC24696,
149  0xCDB30AEB, 0x532E3054, 0x8FD948E4, 0x6DBC3128,
150  0x58EBF2EF, 0x34C6FFEA, 0xFE28ED61, 0xEE7C3C73,
151  0x5D4A14D9, 0xE864B7E3, 0x42105D14, 0x203E13E0,
152  0x45EEE2B6, 0xA3AAABEA, 0xDB6C4F15, 0xFACB4FD0,
153  0xC742F442, 0xEF6ABBB5, 0x654F3B1D, 0x41CD2105,
154  0xD81E799E, 0x86854DC7, 0xE44B476A, 0x3D816250,
155  0xCF62A1F2, 0x5B8D2646, 0xFC8883A0, 0xC1C7B6A3,
156  0x7F1524C3, 0x69CB7492, 0x47848A0B, 0x5692B285,
157  0x095BBF00, 0xAD19489D, 0x1462B174, 0x23820E00,
158  0x58428D2A, 0x0C55F5EA, 0x1DADF43E, 0x233F7061,
159  0x3372F092, 0x8D937E41, 0xD65FECF1, 0x6C223BDB,
160  0x7CDE3759, 0xCBEE7460, 0x4085F2A7, 0xCE77326E,
161  0xA6078084, 0x19F8509E, 0xE8EFD855, 0x61D99735,
162  0xA969A7AA, 0xC50C06C2, 0x5A04ABFC, 0x800BCADC,
163  0x9E447A2E, 0xC3453484, 0xFDD56705, 0x0E1E9EC9,
164  0xDB73DBD3, 0x105588CD, 0x675FDA79, 0xE3674340,
165  0xC5C43465, 0x713E38D8, 0x3D28F89E, 0xF16DFF20,
166  0x153E21E7, 0x8FB03D4A, 0xE6E39F2B, 0xDB83ADF7 },
167  { 0xE93D5A68, 0x948140F7, 0xF64C261C, 0x94692934,
168  0x411520F7, 0x7602D4F7, 0xBCF46B2E, 0xD4A20068,
169  0xD4082471, 0x3320F46A, 0x43B7D4B7, 0x500061AF,
170  0x1E39F62E, 0x97244546, 0x14214F74, 0xBF8B8840,
171  0x4D95FC1D, 0x96B591AF, 0x70F4DDD3, 0x66A02F45,
172  0xBFBC09EC, 0x03BD9785, 0x7FAC6DD0, 0x31CB8504,
173  0x96EB27B3, 0x55FD3941, 0xDA2547E6, 0xABCA0A9A,
174  0x28507825, 0x530429F4, 0x0A2C86DA, 0xE9B66DFB,
175  0x68DC1462, 0xD7486900, 0x680EC0A4, 0x27A18DEE,
176  0x4F3FFEA2, 0xE887AD8C, 0xB58CE006, 0x7AF4D6B6,
177  0xAACE1E7C, 0xD3375FEC, 0xCE78A399, 0x406B2A42,
178  0x20FE9E35, 0xD9F385B9, 0xEE39D7AB, 0x3B124E8B,
179  0x1DC9FAF7, 0x4B6D1856, 0x26A36631, 0xEAE397B2,
180  0x3A6EFA74, 0xDD5B4332, 0x6841E7F7, 0xCA7820FB,
181  0xFB0AF54E, 0xD8FEB397, 0x454056AC, 0xBA489527,
182  0x55533A3A, 0x20838D87, 0xFE6BA9B7, 0xD096954B,
183  0x55A867BC, 0xA1159A58, 0xCCA92963, 0x99E1DB33,
184  0xA62A4A56, 0x3F3125F9, 0x5EF47E1C, 0x9029317C,
185  0xFDF8E802, 0x04272F70, 0x80BB155C, 0x05282CE3,
186  0x95C11548, 0xE4C66D22, 0x48C1133F, 0xC70F86DC,
187  0x07F9C9EE, 0x41041F0F, 0x404779A4, 0x5D886E17,
188  0x325F51EB, 0xD59BC0D1, 0xF2BCC18F, 0x41113564,
189  0x257B7834, 0x602A9C60, 0xDFF8E8A3, 0x1F636C1B,
190  0x0E12B4C2, 0x02E1329E, 0xAF664FD1, 0xCAD18115,
191  0x6B2395E0, 0x333E92E1, 0x3B240B62, 0xEEBEB922,
192  0x85B2A20E, 0xE6BA0D99, 0xDE720C8C, 0x2DA2F728,
193  0xD0127845, 0x95B794FD, 0x647D0862, 0xE7CCF5F0,
194  0x5449A36F, 0x877D48FA, 0xC39DFD27, 0xF33E8D1E,
195  0x0A476341, 0x992EFF74, 0x3A6F6EAB, 0xF4F8FD37,
196  0xA812DC60, 0xA1EBDDF8, 0x991BE14C, 0xDB6E6B0D,
197  0xC67B5510, 0x6D672C37, 0x2765D43B, 0xDCD0E804,
198  0xF1290DC7, 0xCC00FFA3, 0xB5390F92, 0x690FED0B,
199  0x667B9FFB, 0xCEDB7D9C, 0xA091CF0B, 0xD9155EA3,
200  0xBB132F88, 0x515BAD24, 0x7B9479BF, 0x763BD6EB,
201  0x37392EB3, 0xCC115979, 0x8026E297, 0xF42E312D,
202  0x6842ADA7, 0xC66A2B3B, 0x12754CCC, 0x782EF11C,
203  0x6A124237, 0xB79251E7, 0x06A1BBE6, 0x4BFB6350,
204  0x1A6B1018, 0x11CAEDFA, 0x3D25BDD8, 0xE2E1C3C9,
205  0x44421659, 0x0A121386, 0xD90CEC6E, 0xD5ABEA2A,
206  0x64AF674E, 0xDA86A85F, 0xBEBFE988, 0x64E4C3FE,
207  0x9DBC8057, 0xF0F7C086, 0x60787BF8, 0x6003604D,
208  0xD1FD8346, 0xF6381FB0, 0x7745AE04, 0xD736FCCC,
209  0x83426B33, 0xF01EAB71, 0xB0804187, 0x3C005E5F,
210  0x77A057BE, 0xBDE8AE24, 0x55464299, 0xBF582E61,
211  0x4E58F48F, 0xF2DDFDA2, 0xF474EF38, 0x8789BDC2,
212  0x5366F9C3, 0xC8B38E74, 0xB475F255, 0x46FCD9B9,
213  0x7AEB2661, 0x8B1DDF84, 0x846A0E79, 0x915F95E2,
214  0x466E598E, 0x20B45770, 0x8CD55591, 0xC902DE4C,
215  0xB90BACE1, 0xBB8205D0, 0x11A86248, 0x7574A99E,
216  0xB77F19B6, 0xE0A9DC09, 0x662D09A1, 0xC4324633,
217  0xE85A1F02, 0x09F0BE8C, 0x4A99A025, 0x1D6EFE10,
218  0x1AB93D1D, 0x0BA5A4DF, 0xA186F20F, 0x2868F169,
219  0xDCB7DA83, 0x573906FE, 0xA1E2CE9B, 0x4FCD7F52,
220  0x50115E01, 0xA70683FA, 0xA002B5C4, 0x0DE6D027,
221  0x9AF88C27, 0x773F8641, 0xC3604C06, 0x61A806B5,
222  0xF0177A28, 0xC0F586E0, 0x006058AA, 0x30DC7D62,
223  0x11E69ED7, 0x2338EA63, 0x53C2DD94, 0xC2C21634,
224  0xBBCBEE56, 0x90BCB6DE, 0xEBFC7DA1, 0xCE591D76,
225  0x6F05E409, 0x4B7C0188, 0x39720A3D, 0x7C927C24,
226  0x86E3725F, 0x724D9DB9, 0x1AC15BB4, 0xD39EB8FC,
227  0xED545578, 0x08FCA5B5, 0xD83D7CD3, 0x4DAD0FC4,
228  0x1E50EF5E, 0xB161E6F8, 0xA28514D9, 0x6C51133C,
229  0x6FD5C7E7, 0x56E14EC4, 0x362ABFCE, 0xDDC6C837,
230  0xD79A3234, 0x92638212, 0x670EFA8E, 0x406000E0 },
231  { 0x3A39CE37, 0xD3FAF5CF, 0xABC27737, 0x5AC52D1B,
232  0x5CB0679E, 0x4FA33742, 0xD3822740, 0x99BC9BBE,
233  0xD5118E9D, 0xBF0F7315, 0xD62D1C7E, 0xC700C47B,
234  0xB78C1B6B, 0x21A19045, 0xB26EB1BE, 0x6A366EB4,
235  0x5748AB2F, 0xBC946E79, 0xC6A376D2, 0x6549C2C8,
236  0x530FF8EE, 0x468DDE7D, 0xD5730A1D, 0x4CD04DC6,
237  0x2939BBDB, 0xA9BA4650, 0xAC9526E8, 0xBE5EE304,
238  0xA1FAD5F0, 0x6A2D519A, 0x63EF8CE2, 0x9A86EE22,
239  0xC089C2B8, 0x43242EF6, 0xA51E03AA, 0x9CF2D0A4,
240  0x83C061BA, 0x9BE96A4D, 0x8FE51550, 0xBA645BD6,
241  0x2826A2F9, 0xA73A3AE1, 0x4BA99586, 0xEF5562E9,
242  0xC72FEFD3, 0xF752F7DA, 0x3F046F69, 0x77FA0A59,
243  0x80E4A915, 0x87B08601, 0x9B09E6AD, 0x3B3EE593,
244  0xE990FD5A, 0x9E34D797, 0x2CF0B7D9, 0x022B8B51,
245  0x96D5AC3A, 0x017DA67D, 0xD1CF3ED6, 0x7C7D2D28,
246  0x1F9F25CF, 0xADF2B89B, 0x5AD6B472, 0x5A88F54C,
247  0xE029AC71, 0xE019A5E6, 0x47B0ACFD, 0xED93FA9B,
248  0xE8D3C48D, 0x283B57CC, 0xF8D56629, 0x79132E28,
249  0x785F0191, 0xED756055, 0xF7960E44, 0xE3D35E8C,
250  0x15056DD4, 0x88F46DBA, 0x03A16125, 0x0564F0BD,
251  0xC3EB9E15, 0x3C9057A2, 0x97271AEC, 0xA93A072A,
252  0x1B3F6D9B, 0x1E6321F5, 0xF59C66FB, 0x26DCF319,
253  0x7533D928, 0xB155FDF5, 0x03563482, 0x8ABA3CBB,
254  0x28517711, 0xC20AD9F8, 0xABCC5167, 0xCCAD925F,
255  0x4DE81751, 0x3830DC8E, 0x379D5862, 0x9320F991,
256  0xEA7A90C2, 0xFB3E7BCE, 0x5121CE64, 0x774FBE32,
257  0xA8B6E37E, 0xC3293D46, 0x48DE5369, 0x6413E680,
258  0xA2AE0810, 0xDD6DB224, 0x69852DFD, 0x09072166,
259  0xB39A460A, 0x6445C0DD, 0x586CDECF, 0x1C20C8AE,
260  0x5BBEF7DD, 0x1B588D40, 0xCCD2017F, 0x6BB4E3BB,
261  0xDDA26A7E, 0x3A59FF45, 0x3E350A44, 0xBCB4CDD5,
262  0x72EACEA8, 0xFA6484BB, 0x8D6612AE, 0xBF3C6F47,
263  0xD29BE463, 0x542F5D9E, 0xAEC2771B, 0xF64E6370,
264  0x740E0D8D, 0xE75B1357, 0xF8721671, 0xAF537D5D,
265  0x4040CB08, 0x4EB4E2CC, 0x34D2466A, 0x0115AF84,
266  0xE1B00428, 0x95983A1D, 0x06B89FB4, 0xCE6EA048,
267  0x6F3F3B82, 0x3520AB82, 0x011A1D4B, 0x277227F8,
268  0x611560B1, 0xE7933FDC, 0xBB3A792B, 0x344525BD,
269  0xA08839E1, 0x51CE794B, 0x2F32C9B7, 0xA01FBAC9,
270  0xE01CC87E, 0xBCC7D1F6, 0xCF0111C3, 0xA1E8AAC7,
271  0x1A908749, 0xD44FBD9A, 0xD0DADECB, 0xD50ADA38,
272  0x0339C32A, 0xC6913667, 0x8DF9317C, 0xE0B12B4F,
273  0xF79E59B7, 0x43F5BB3A, 0xF2D519FF, 0x27D9459C,
274  0xBF97222C, 0x15E6FC2A, 0x0F91FC71, 0x9B941525,
275  0xFAE59361, 0xCEB69CEB, 0xC2A86459, 0x12BAA8D1,
276  0xB6C1075E, 0xE3056A0C, 0x10D25065, 0xCB03A442,
277  0xE0EC6E0E, 0x1698DB3B, 0x4C98A0BE, 0x3278E964,
278  0x9F1F9532, 0xE0D392DF, 0xD3A0342B, 0x8971F21E,
279  0x1B0A7441, 0x4BA3348C, 0xC5BE7120, 0xC37632D8,
280  0xDF359F8D, 0x9B992F2E, 0xE60B6F47, 0x0FE3F11D,
281  0xE54CDA54, 0x1EDAD891, 0xCE6279CF, 0xCD3E7E6F,
282  0x1618B166, 0xFD2C1D05, 0x848FD2C5, 0xF6FB2299,
283  0xF523F357, 0xA6327623, 0x93A83531, 0x56CCCD02,
284  0xACF08162, 0x5A75EBB5, 0x6E163697, 0x88D273CC,
285  0xDE966292, 0x81B949D0, 0x4C50901B, 0x71C65614,
286  0xE6C6C7BD, 0x327A140A, 0x45E1D006, 0xC3F27B9A,
287  0xC9AA53FD, 0x62A80F00, 0xBB25BFE2, 0x35BDD2F6,
288  0x71126905, 0xB2040222, 0xB6CBCF7C, 0xCD769C2B,
289  0x53113EC0, 0x1640E3D3, 0x38ABBD60, 0x2547ADF0,
290  0xBA38209C, 0xF746CE76, 0x77AFA1C5, 0x20756060,
291  0x85CBFE4E, 0x8AE88DD8, 0x7AAAF9B0, 0x4CF9AA7E,
292  0x1948C25C, 0x02FB8A8C, 0x01C36AE4, 0xD6EBE1F9,
293  0x90D4F869, 0xA65CDEA0, 0x3F09252D, 0xC208E69F,
294  0xB74E6132, 0xCE77E25B, 0x578FDFE3, 0x3AC372E6 }
295 };
296 
297 #define F(Xl, Xr, P) \
298  Xr ^=((( ctx->s[0][ Xl >> 24 ] \
299  + ctx->s[1][(Xl >> 16) & 0xFF])\
300  ^ ctx->s[2][(Xl >> 8) & 0xFF])\
301  + ctx->s[3][ Xl & 0xFF])\
302  ^ P;
303 
305 {
306  return av_mallocz(sizeof(struct AVBlowfish));
307 }
308 
309 av_cold void av_blowfish_init(AVBlowfish *ctx, const uint8_t *key, int key_len)
310 {
311  uint32_t data, data_l, data_r;
312  int i, j, k;
313 
314  memcpy(ctx->s, orig_s, sizeof(orig_s));
315 
316  j = 0;
317  for (i = 0; i < AV_BF_ROUNDS + 2; ++i) {
318  data = 0;
319  for (k = 0; k < 4; k++) {
320  data = (data << 8) | key[j];
321  if (++j >= key_len)
322  j = 0;
323  }
324  ctx->p[i] = orig_p[i] ^ data;
325  }
326 
327  data_l = data_r = 0;
328 
329  for (i = 0; i < AV_BF_ROUNDS + 2; i += 2) {
330  av_blowfish_crypt_ecb(ctx, &data_l, &data_r, 0);
331  ctx->p[i] = data_l;
332  ctx->p[i + 1] = data_r;
333  }
334 
335  for (i = 0; i < 4; ++i) {
336  for (j = 0; j < 256; j += 2) {
337  av_blowfish_crypt_ecb(ctx, &data_l, &data_r, 0);
338  ctx->s[i][j] = data_l;
339  ctx->s[i][j + 1] = data_r;
340  }
341  }
342 }
343 
344 void av_blowfish_crypt_ecb(AVBlowfish *ctx, uint32_t *xl, uint32_t *xr,
345  int decrypt)
346 {
347  uint32_t Xl, Xr;
348  int i;
349 
350  Xl = *xl;
351  Xr = *xr;
352 
353  if (decrypt) {
354  Xl ^= ctx->p[AV_BF_ROUNDS + 1];
355  for (i = AV_BF_ROUNDS; i > 0; i-=2) {
356  F(Xl, Xr, ctx->p[i ]);
357  F(Xr, Xl, ctx->p[i-1]);
358  }
359 
360  Xr ^= ctx->p[0];
361  } else {
362  Xl ^= ctx->p[0];
363  for (i = 1; i < AV_BF_ROUNDS+1; i+=2){
364  F(Xl, Xr, ctx->p[i ]);
365  F(Xr, Xl, ctx->p[i+1]);
366  }
367 
368  Xr ^= ctx->p[AV_BF_ROUNDS + 1];
369  }
370 
371  *xl = Xr;
372  *xr = Xl;
373 }
374 
376  int count, uint8_t *iv, int decrypt)
377 {
378  uint32_t v0, v1;
379  int i;
380 
381  if (decrypt) {
382  while (count--) {
383  v0 = AV_RB32(src);
384  v1 = AV_RB32(src + 4);
385 
386  av_blowfish_crypt_ecb(ctx, &v0, &v1, decrypt);
387 
388  if (iv) {
389  v0 ^= AV_RB32(iv);
390  v1 ^= AV_RB32(iv + 4);
391  memcpy(iv, src, 8);
392  }
393 
394  AV_WB32(dst, v0);
395  AV_WB32(dst + 4, v1);
396 
397  src += 8;
398  dst += 8;
399  }
400  } else {
401  while (count--) {
402  if (iv) {
403  for (i = 0; i < 8; i++)
404  dst[i] = src[i] ^ iv[i];
405  v0 = AV_RB32(dst);
406  v1 = AV_RB32(dst + 4);
407  } else {
408  v0 = AV_RB32(src);
409  v1 = AV_RB32(src + 4);
410  }
411 
412  av_blowfish_crypt_ecb(ctx, &v0, &v1, decrypt);
413 
414  AV_WB32(dst, v0);
415  AV_WB32(dst + 4, v1);
416 
417  if (iv)
418  memcpy(iv, dst, 8);
419 
420  src += 8;
421  dst += 8;
422  }
423  }
424 }
uint32_t p[AV_BF_ROUNDS+2]
Definition: blowfish.h:36
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
AVBlowfish * av_blowfish_alloc(void)
Allocate an AVBlowfish context.
Definition: blowfish.c:304
memory handling functions
void av_blowfish_crypt(AVBlowfish *ctx, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
Encrypt or decrypt a buffer using a previously initialized context.
Definition: blowfish.c:375
Convenience header that includes libavutil's core.
GLfloat v0
Definition: opengl_enc.c:107
static const uint32_t orig_s[4][256]
Definition: blowfish.c:38
uint8_t
#define av_cold
Definition: attributes.h:82
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
av_cold void av_blowfish_init(AVBlowfish *ctx, const uint8_t *key, int key_len)
Initialize an AVBlowfish context.
Definition: blowfish.c:309
GLsizei count
Definition: opengl_enc.c:109
static const uint32_t orig_p[AV_BF_ROUNDS+2]
Definition: blowfish.c:30
AVFormatContext * ctx
Definition: movenc.c:48
#define F(Xl, Xr, P)
Definition: blowfish.c:297
#define src
Definition: vp9dsp.c:530
void av_blowfish_crypt_ecb(AVBlowfish *ctx, uint32_t *xl, uint32_t *xr, int decrypt)
Encrypt or decrypt a buffer using a previously initialized context.
Definition: blowfish.c:344
uint32_t s[4][256]
Definition: blowfish.h:37
#define AV_WB32(p, v)
Definition: intreadwrite.h:419
common internal and external API header
#define AV_BF_ROUNDS
Definition: blowfish.h:33
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252