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 "libavutil/intreadwrite.h"
25 
26 #include "avutil.h"
27 #include "common.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 
304 av_cold void av_blowfish_init(AVBlowfish *ctx, const uint8_t *key, int key_len)
305 {
306  uint32_t data, data_l, data_r;
307  int i, j, k;
308 
309  memcpy(ctx->s, orig_s, sizeof(orig_s));
310 
311  j = 0;
312  for (i = 0; i < AV_BF_ROUNDS + 2; ++i) {
313  data = 0;
314  for (k = 0; k < 4; k++) {
315  data = (data << 8) | key[j];
316  if (++j >= key_len)
317  j = 0;
318  }
319  ctx->p[i] = orig_p[i] ^ data;
320  }
321 
322  data_l = data_r = 0;
323 
324  for (i = 0; i < AV_BF_ROUNDS + 2; i += 2) {
325  av_blowfish_crypt_ecb(ctx, &data_l, &data_r, 0);
326  ctx->p[i] = data_l;
327  ctx->p[i + 1] = data_r;
328  }
329 
330  for (i = 0; i < 4; ++i) {
331  for (j = 0; j < 256; j += 2) {
332  av_blowfish_crypt_ecb(ctx, &data_l, &data_r, 0);
333  ctx->s[i][j] = data_l;
334  ctx->s[i][j + 1] = data_r;
335  }
336  }
337 }
338 
339 void av_blowfish_crypt_ecb(AVBlowfish *ctx, uint32_t *xl, uint32_t *xr,
340  int decrypt)
341 {
342  uint32_t Xl, Xr;
343  int i;
344 
345  Xl = *xl;
346  Xr = *xr;
347 
348  if (decrypt) {
349  Xl ^= ctx->p[AV_BF_ROUNDS + 1];
350  for (i = AV_BF_ROUNDS; i > 0; i-=2) {
351  F(Xl, Xr, ctx->p[i ]);
352  F(Xr, Xl, ctx->p[i-1]);
353  }
354 
355  Xr ^= ctx->p[0];
356  } else {
357  Xl ^= ctx->p[0];
358  for (i = 1; i < AV_BF_ROUNDS+1; i+=2){
359  F(Xl, Xr, ctx->p[i ]);
360  F(Xr, Xl, ctx->p[i+1]);
361  }
362 
363  Xr ^= ctx->p[AV_BF_ROUNDS + 1];
364  }
365 
366  *xl = Xr;
367  *xr = Xl;
368 }
369 
370 void av_blowfish_crypt(AVBlowfish *ctx, uint8_t *dst, const uint8_t *src,
371  int count, uint8_t *iv, int decrypt)
372 {
373  uint32_t v0, v1;
374  int i;
375 
376  if (decrypt) {
377  while (count--) {
378  v0 = AV_RB32(src);
379  v1 = AV_RB32(src + 4);
380 
381  av_blowfish_crypt_ecb(ctx, &v0, &v1, decrypt);
382 
383  if (iv) {
384  v0 ^= AV_RB32(iv);
385  v1 ^= AV_RB32(iv + 4);
386  memcpy(iv, src, 8);
387  }
388 
389  AV_WB32(dst, v0);
390  AV_WB32(dst + 4, v1);
391 
392  src += 8;
393  dst += 8;
394  }
395  } else {
396  while (count--) {
397  if (iv) {
398  for (i = 0; i < 8; i++)
399  dst[i] = src[i] ^ iv[i];
400  v0 = AV_RB32(dst);
401  v1 = AV_RB32(dst + 4);
402  } else {
403  v0 = AV_RB32(src);
404  v1 = AV_RB32(src + 4);
405  }
406 
407  av_blowfish_crypt_ecb(ctx, &v0, &v1, decrypt);
408 
409  AV_WB32(dst, v0);
410  AV_WB32(dst + 4, v1);
411 
412  if (iv)
413  memcpy(iv, dst, 8);
414 
415  src += 8;
416  dst += 8;
417  }
418  }
419 }
420 
421 #ifdef TEST
422 #include <stdio.h>
423 
424 #define NUM_VARIABLE_KEY_TESTS 34
425 
426 /* plaintext bytes -- left halves */
427 static const uint32_t plaintext_l[NUM_VARIABLE_KEY_TESTS] = {
428  0x00000000, 0xFFFFFFFF, 0x10000000, 0x11111111, 0x11111111,
429  0x01234567, 0x00000000, 0x01234567, 0x01A1D6D0, 0x5CD54CA8,
430  0x0248D438, 0x51454B58, 0x42FD4430, 0x059B5E08, 0x0756D8E0,
431  0x762514B8, 0x3BDD1190, 0x26955F68, 0x164D5E40, 0x6B056E18,
432  0x004BD6EF, 0x480D3900, 0x437540C8, 0x072D43A0, 0x02FE5577,
433  0x1D9D5C50, 0x30553228, 0x01234567, 0x01234567, 0x01234567,
434  0xFFFFFFFF, 0x00000000, 0x00000000, 0xFFFFFFFF
435 };
436 
437 /* plaintext bytes -- right halves */
438 static const uint32_t plaintext_r[NUM_VARIABLE_KEY_TESTS] = {
439  0x00000000, 0xFFFFFFFF, 0x00000001, 0x11111111, 0x11111111,
440  0x89ABCDEF, 0x00000000, 0x89ABCDEF, 0x39776742, 0x3DEF57DA,
441  0x06F67172, 0x2DDF440A, 0x59577FA2, 0x51CF143A, 0x774761D2,
442  0x29BF486A, 0x49372802, 0x35AF609A, 0x4F275232, 0x759F5CCA,
443  0x09176062, 0x6EE762F2, 0x698F3CFA, 0x77075292, 0x8117F12A,
444  0x18F728C2, 0x6D6F295A, 0x89ABCDEF, 0x89ABCDEF, 0x89ABCDEF,
445  0xFFFFFFFF, 0x00000000, 0x00000000, 0xFFFFFFFF
446 };
447 
448 /* key bytes for variable key tests */
449 static const uint8_t variable_key[NUM_VARIABLE_KEY_TESTS][8] = {
450  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
451  { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
452  { 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
453  { 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11 },
454  { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF },
455  { 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11 },
456  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
457  { 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10 },
458  { 0x7C, 0xA1, 0x10, 0x45, 0x4A, 0x1A, 0x6E, 0x57 },
459  { 0x01, 0x31, 0xD9, 0x61, 0x9D, 0xC1, 0x37, 0x6E },
460  { 0x07, 0xA1, 0x13, 0x3E, 0x4A, 0x0B, 0x26, 0x86 },
461  { 0x38, 0x49, 0x67, 0x4C, 0x26, 0x02, 0x31, 0x9E },
462  { 0x04, 0xB9, 0x15, 0xBA, 0x43, 0xFE, 0xB5, 0xB6 },
463  { 0x01, 0x13, 0xB9, 0x70, 0xFD, 0x34, 0xF2, 0xCE },
464  { 0x01, 0x70, 0xF1, 0x75, 0x46, 0x8F, 0xB5, 0xE6 },
465  { 0x43, 0x29, 0x7F, 0xAD, 0x38, 0xE3, 0x73, 0xFE },
466  { 0x07, 0xA7, 0x13, 0x70, 0x45, 0xDA, 0x2A, 0x16 },
467  { 0x04, 0x68, 0x91, 0x04, 0xC2, 0xFD, 0x3B, 0x2F },
468  { 0x37, 0xD0, 0x6B, 0xB5, 0x16, 0xCB, 0x75, 0x46 },
469  { 0x1F, 0x08, 0x26, 0x0D, 0x1A, 0xC2, 0x46, 0x5E },
470  { 0x58, 0x40, 0x23, 0x64, 0x1A, 0xBA, 0x61, 0x76 },
471  { 0x02, 0x58, 0x16, 0x16, 0x46, 0x29, 0xB0, 0x07 },
472  { 0x49, 0x79, 0x3E, 0xBC, 0x79, 0xB3, 0x25, 0x8F },
473  { 0x4F, 0xB0, 0x5E, 0x15, 0x15, 0xAB, 0x73, 0xA7 },
474  { 0x49, 0xE9, 0x5D, 0x6D, 0x4C, 0xA2, 0x29, 0xBF },
475  { 0x01, 0x83, 0x10, 0xDC, 0x40, 0x9B, 0x26, 0xD6 },
476  { 0x1C, 0x58, 0x7F, 0x1C, 0x13, 0x92, 0x4F, 0xEF },
477  { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 },
478  { 0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E },
479  { 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE },
480  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
481  { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
482  { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF },
483  { 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10 }
484 };
485 
486 /* ciphertext bytes -- left halves */
487 static const uint32_t ciphertext_l[NUM_VARIABLE_KEY_TESTS] = {
488  0x4EF99745, 0x51866FD5, 0x7D856F9A, 0x2466DD87, 0x61F9C380,
489  0x7D0CC630, 0x4EF99745, 0x0ACEAB0F, 0x59C68245, 0xB1B8CC0B,
490  0x1730E577, 0xA25E7856, 0x353882B1, 0x48F4D088, 0x432193B7,
491  0x13F04154, 0x2EEDDA93, 0xD887E039, 0x5F99D04F, 0x4A057A3B,
492  0x452031C1, 0x7555AE39, 0x53C55F9C, 0x7A8E7BFA, 0xCF9C5D7A,
493  0xD1ABB290, 0x55CB3774, 0xFA34EC48, 0xA7907951, 0xC39E072D,
494  0x014933E0, 0xF21E9A77, 0x24594688, 0x6B5C5A9C
495 };
496 
497 /* ciphertext bytes -- right halves */
498 static const uint32_t ciphertext_r[NUM_VARIABLE_KEY_TESTS] = {
499  0x6198DD78, 0xB85ECB8A, 0x613063F2, 0x8B963C9D, 0x2281B096,
500  0xAFDA1EC7, 0x6198DD78, 0xC6A0A28D, 0xEB05282B, 0x250F09A0,
501  0x8BEA1DA4, 0xCF2651EB, 0x09CE8F1A, 0x4C379918, 0x8951FC98,
502  0xD69D1AE5, 0xFFD39C79, 0x3C2DA6E3, 0x5B163969, 0x24D3977B,
503  0xE4FADA8E, 0xF59B87BD, 0xB49FC019, 0x937E89A3, 0x4986ADB5,
504  0x658BC778, 0xD13EF201, 0x47B268B2, 0x08EA3CAE, 0x9FAC631D,
505  0xCDAFF6E4, 0xB71C49BC, 0x5754369A, 0x5D9E0A5A
506 };
507 
508 /* plaintext bytes */
509 static const uint8_t plaintext[8] = "BLOWFISH";
510 
511 static const uint8_t plaintext2[16] = "BLOWFISHBLOWFISH";
512 
513 /* ciphertext bytes */
514 static const uint8_t ciphertext[8] = {
515  0x32, 0x4E, 0xD0, 0xFE, 0xF4, 0x13, 0xA2, 0x03
516 };
517 
518 static const uint8_t ciphertext2[16] = {
519  0x53, 0x00, 0x40, 0x06, 0x63, 0xf2, 0x1d, 0x99,
520  0x3b, 0x9b, 0x27, 0x64, 0x46, 0xfd, 0x20, 0xc1,
521 };
522 
523 #define IV "blowfish"
524 
525 static void test_blowfish(AVBlowfish *ctx, uint8_t *dst, const uint8_t *src,
526  const uint8_t *ref, int len, uint8_t *iv, int dir,
527  const char *test)
528 {
529  av_blowfish_crypt(ctx, dst, src, len, iv, dir);
530  if (memcmp(dst, ref, 8*len)) {
531  int i;
532  printf("%s failed\ngot ", test);
533  for (i = 0; i < 8*len; i++)
534  printf("%02x ", dst[i]);
535  printf("\nexpected ");
536  for (i = 0; i < 8*len; i++)
537  printf("%02x ", ref[i]);
538  printf("\n");
539  exit(1);
540  }
541 }
542 
543 int main(void)
544 {
545  AVBlowfish ctx;
546  uint32_t tmptext_l[NUM_VARIABLE_KEY_TESTS];
547  uint32_t tmptext_r[NUM_VARIABLE_KEY_TESTS];
548  uint8_t tmp[16], iv[8];
549  int i;
550 
551  av_blowfish_init(&ctx, "abcdefghijklmnopqrstuvwxyz", 26);
552 
553  test_blowfish(&ctx, tmp, plaintext, ciphertext, 1, NULL, 0, "encryption");
554  test_blowfish(&ctx, tmp, ciphertext, plaintext, 1, NULL, 1, "decryption");
555  test_blowfish(&ctx, tmp, tmp, ciphertext, 1, NULL, 0, "Inplace encryption");
556  test_blowfish(&ctx, tmp, tmp, plaintext, 1, NULL, 1, "Inplace decryption");
557  memcpy(iv, IV, 8);
558  test_blowfish(&ctx, tmp, plaintext2, ciphertext2, 2, iv, 0, "CBC encryption");
559  memcpy(iv, IV, 8);
560  test_blowfish(&ctx, tmp, ciphertext2, plaintext2, 2, iv, 1, "CBC decryption");
561  memcpy(iv, IV, 8);
562  test_blowfish(&ctx, tmp, tmp, ciphertext2, 2, iv, 0, "Inplace CBC encryption");
563  memcpy(iv, IV, 8);
564  test_blowfish(&ctx, tmp, tmp, plaintext2, 2, iv, 1, "Inplace CBC decryption");
565 
566  memcpy(tmptext_l, plaintext_l, sizeof(*plaintext_l) * NUM_VARIABLE_KEY_TESTS);
567  memcpy(tmptext_r, plaintext_r, sizeof(*plaintext_r) * NUM_VARIABLE_KEY_TESTS);
568 
569  for (i = 0; i < NUM_VARIABLE_KEY_TESTS; i++) {
570  av_blowfish_init(&ctx, variable_key[i], 8);
571 
572  av_blowfish_crypt_ecb(&ctx, &tmptext_l[i], &tmptext_r[i], 0);
573  if (tmptext_l[i] != ciphertext_l[i] || tmptext_r[i] != ciphertext_r[i]) {
574  printf("Test encryption failed.\n");
575  return 1;
576  }
577 
578  av_blowfish_crypt_ecb(&ctx, &tmptext_l[i], &tmptext_r[i], 1);
579  if (tmptext_l[i] != plaintext_l[i] || tmptext_r[i] != plaintext_r[i]) {
580  printf("Test decryption failed.\n");
581  return 1;
582  }
583  }
584  printf("Test encryption/decryption success.\n");
585 
586  return 0;
587 }
588 
589 #endif
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