avutil/softfloat: Fix sign error in and improve documentation of av_int2sf()
[ffmpeg.git] / libavutil / blowfish.c
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
304 AVBlowfish *av_blowfish_alloc(void)
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
375 void av_blowfish_crypt(AVBlowfish *ctx, uint8_t *dst, const uint8_t *src,
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 }