xref: /linux/crypto/blowfish_common.c (revision 72bea132f3680ee51e7ed2cee62892b6f5121909) 
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Cryptographic API.
4  *
5  * Common Blowfish algorithm parts shared between the c and assembler
6  * implementations.
7  *
8  * Blowfish Cipher Algorithm, by Bruce Schneier.
9  * http://www.counterpane.com/blowfish.html
10  *
11  * Adapted from Kerneli implementation.
12  *
13  * Copyright (c) Herbert Valerio Riedel <hvr@hvrlab.org>
14  * Copyright (c) Kyle McMartin <kyle@debian.org>
15  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
16  */
17 
18 #include <crypto/algapi.h>
19 #include <linux/init.h>
20 #include <linux/module.h>
21 #include <linux/mm.h>
22 #include <asm/byteorder.h>
23 #include <linux/types.h>
24 #include <crypto/blowfish.h>
25 
26 static const u32 bf_pbox[16 + 2] = {
27 	0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
28 	0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
29 	0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
30 	0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
31 	0x9216d5d9, 0x8979fb1b,
32 };
33 
34 static const u32 bf_sbox[256 * 4] = {
35 	0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
36 	0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
37 	0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
38 	0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
39 	0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
40 	0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
41 	0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
42 	0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
43 	0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
44 	0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
45 	0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
46 	0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
47 	0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
48 	0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
49 	0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
50 	0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
51 	0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
52 	0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
53 	0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
54 	0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
55 	0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
56 	0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
57 	0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
58 	0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
59 	0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
60 	0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
61 	0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
62 	0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
63 	0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
64 	0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
65 	0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
66 	0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
67 	0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
68 	0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
69 	0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
70 	0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
71 	0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
72 	0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
73 	0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
74 	0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
75 	0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
76 	0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
77 	0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
78 	0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
79 	0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
80 	0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
81 	0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
82 	0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
83 	0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
84 	0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
85 	0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
86 	0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
87 	0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
88 	0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
89 	0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
90 	0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
91 	0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
92 	0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
93 	0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
94 	0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
95 	0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
96 	0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
97 	0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
98 	0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a,
99 	0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
100 	0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
101 	0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
102 	0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
103 	0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
104 	0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
105 	0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
106 	0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
107 	0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
108 	0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
109 	0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
110 	0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
111 	0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
112 	0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
113 	0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
114 	0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
115 	0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
116 	0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
117 	0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
118 	0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
119 	0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
120 	0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
121 	0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
122 	0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
123 	0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
124 	0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
125 	0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
126 	0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
127 	0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
128 	0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
129 	0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
130 	0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
131 	0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
132 	0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
133 	0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
134 	0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
135 	0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
136 	0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
137 	0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
138 	0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
139 	0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
140 	0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
141 	0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
142 	0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
143 	0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
144 	0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
145 	0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
146 	0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
147 	0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
148 	0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
149 	0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
150 	0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
151 	0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
152 	0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
153 	0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
154 	0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
155 	0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
156 	0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
157 	0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
158 	0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
159 	0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
160 	0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
161 	0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
162 	0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7,
163 	0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
164 	0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
165 	0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
166 	0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
167 	0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
168 	0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
169 	0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
170 	0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
171 	0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
172 	0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
173 	0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
174 	0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
175 	0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
176 	0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
177 	0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
178 	0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
179 	0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
180 	0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
181 	0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
182 	0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
183 	0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
184 	0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
185 	0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
186 	0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
187 	0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
188 	0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
189 	0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
190 	0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
191 	0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
192 	0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
193 	0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
194 	0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
195 	0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
196 	0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
197 	0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
198 	0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
199 	0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
200 	0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
201 	0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
202 	0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
203 	0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
204 	0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
205 	0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
206 	0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
207 	0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
208 	0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
209 	0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
210 	0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
211 	0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
212 	0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
213 	0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
214 	0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
215 	0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
216 	0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
217 	0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
218 	0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
219 	0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
220 	0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
221 	0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
222 	0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
223 	0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
224 	0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
225 	0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
226 	0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0,
227 	0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
228 	0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
229 	0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
230 	0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
231 	0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
232 	0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
233 	0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
234 	0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
235 	0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
236 	0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
237 	0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
238 	0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
239 	0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
240 	0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
241 	0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
242 	0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
243 	0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
244 	0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
245 	0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
246 	0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
247 	0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
248 	0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
249 	0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
250 	0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
251 	0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
252 	0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
253 	0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
254 	0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
255 	0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
256 	0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
257 	0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
258 	0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
259 	0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
260 	0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
261 	0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
262 	0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
263 	0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
264 	0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
265 	0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
266 	0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
267 	0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
268 	0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
269 	0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
270 	0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
271 	0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
272 	0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
273 	0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
274 	0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
275 	0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
276 	0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
277 	0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
278 	0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
279 	0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
280 	0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
281 	0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
282 	0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
283 	0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
284 	0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
285 	0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
286 	0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
287 	0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
288 	0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
289 	0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
290 	0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6,
291 };
292 
293 /*
294  * Round loop unrolling macros, S is a pointer to a S-Box array
295  * organized in 4 unsigned longs at a row.
296  */
297 #define GET32_3(x) (((x) & 0xff))
298 #define GET32_2(x) (((x) >> (8)) & (0xff))
299 #define GET32_1(x) (((x) >> (16)) & (0xff))
300 #define GET32_0(x) (((x) >> (24)) & (0xff))
301 
302 #define bf_F(x) (((S[GET32_0(x)] + S[256 + GET32_1(x)]) ^ \
303 		S[512 + GET32_2(x)]) + S[768 + GET32_3(x)])
304 
305 #define ROUND(a, b, n) ({ b ^= P[n]; a ^= bf_F(b); })
306 
307 /*
308  * The blowfish encipher, processes 64-bit blocks.
309  * NOTE: This function MUSTN'T respect endianess
310  */
311 static void encrypt_block(struct bf_ctx *bctx, u32 *dst, u32 *src)
312 {
313 	const u32 *P = bctx->p;
314 	const u32 *S = bctx->s;
315 	u32 yl = src[0];
316 	u32 yr = src[1];
317 
318 	ROUND(yr, yl, 0);
319 	ROUND(yl, yr, 1);
320 	ROUND(yr, yl, 2);
321 	ROUND(yl, yr, 3);
322 	ROUND(yr, yl, 4);
323 	ROUND(yl, yr, 5);
324 	ROUND(yr, yl, 6);
325 	ROUND(yl, yr, 7);
326 	ROUND(yr, yl, 8);
327 	ROUND(yl, yr, 9);
328 	ROUND(yr, yl, 10);
329 	ROUND(yl, yr, 11);
330 	ROUND(yr, yl, 12);
331 	ROUND(yl, yr, 13);
332 	ROUND(yr, yl, 14);
333 	ROUND(yl, yr, 15);
334 
335 	yl ^= P[16];
336 	yr ^= P[17];
337 
338 	dst[0] = yr;
339 	dst[1] = yl;
340 }
341 
342 /*
343  * Calculates the blowfish S and P boxes for encryption and decryption.
344  */
345 int blowfish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
346 {
347 	struct bf_ctx *ctx = crypto_tfm_ctx(tfm);
348 	u32 *P = ctx->p;
349 	u32 *S = ctx->s;
350 	short i, j, count;
351 	u32 data[2], temp;
352 
353 	/* Copy the initialization s-boxes */
354 	for (i = 0, count = 0; i < 256; i++)
355 		for (j = 0; j < 4; j++, count++)
356 			S[count] = bf_sbox[count];
357 
358 	/* Set the p-boxes */
359 	for (i = 0; i < 16 + 2; i++)
360 		P[i] = bf_pbox[i];
361 
362 	/* Actual subkey generation */
363 	for (j = 0, i = 0; i < 16 + 2; i++) {
364 		temp = (((u32)key[j] << 24) |
365 			((u32)key[(j + 1) % keylen] << 16) |
366 			((u32)key[(j + 2) % keylen] << 8) |
367 			((u32)key[(j + 3) % keylen]));
368 
369 		P[i] = P[i] ^ temp;
370 		j = (j + 4) % keylen;
371 	}
372 
373 	data[0] = 0x00000000;
374 	data[1] = 0x00000000;
375 
376 	for (i = 0; i < 16 + 2; i += 2) {
377 		encrypt_block((struct bf_ctx *)ctx, data, data);
378 
379 		P[i] = data[0];
380 		P[i + 1] = data[1];
381 	}
382 
383 	for (i = 0; i < 4; i++) {
384 		for (j = 0, count = i * 256; j < 256; j += 2, count += 2) {
385 			encrypt_block((struct bf_ctx *)ctx, data, data);
386 
387 			S[count] = data[0];
388 			S[count + 1] = data[1];
389 		}
390 	}
391 
392 	/* Bruce says not to bother with the weak key check. */
393 	return 0;
394 }
395 EXPORT_SYMBOL_GPL(blowfish_setkey);
396 
397 MODULE_LICENSE("GPL");
398 MODULE_DESCRIPTION("Blowfish Cipher common functions");
399