2 * This implementation was taken from the International Kernel (kerneli)
3 * patch for Linux kernel. The author is unknown to me. This
4 * implementation is under the same license as it is in the kerneli patch.
5 * I've modified it a bit to fit to SILC. -Pekka
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the
12 * "Software"), to deal in the Software without restriction, including
13 * without limitation the rights to use, copy, modify, merge, publish, dis-
14 * tribute, sublicense, and/or sell copies of the Software, and to permit
15 * persons to whom the Software is furnished to do so, subject to the fol-
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
23 * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
24 * SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABIL-
25 * ITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
29 * Except as contained in this notice, the name of the authors shall
30 * not be used in advertising or otherwise to promote the sale, use or
31 * other dealings in this Software without prior written authorization from
37 #include "blowfish_internal.h"
41 * SILC Crypto API for Blowfish
44 /* Sets the key for the cipher. */
46 SILC_CIPHER_API_SET_KEY(blowfish_cbc)
48 blowfish_set_key((BlowfishContext *)context, (unsigned char *)key, keylen);
52 /* Sets IV for the cipher. */
54 SILC_CIPHER_API_SET_IV(blowfish_cbc)
59 /* Returns the size of the cipher context. */
61 SILC_CIPHER_API_CONTEXT_LEN(blowfish_cbc)
63 return sizeof(BlowfishContext);
66 /* Encrypts with the cipher in CBC mode. Source and destination buffers
67 maybe one and same. */
69 SILC_CIPHER_API_ENCRYPT(blowfish_cbc)
74 SILC_CBC_GET_IV(tiv, iv);
76 SILC_CBC_ENC_PRE(tiv, src);
77 blowfish_encrypt((BlowfishContext *)context, tiv, tiv, 16);
78 SILC_CBC_ENC_POST(tiv, dst, src);
80 for (i = 16; i < len; i += 16) {
81 SILC_CBC_ENC_PRE(tiv, src);
82 blowfish_encrypt((BlowfishContext *)context, tiv, tiv, 16);
83 SILC_CBC_ENC_POST(tiv, dst, src);
86 SILC_CBC_PUT_IV(tiv, iv);
91 /* Decrypts with the cipher in CBC mode. Source and destination buffers
92 maybe one and same. */
94 SILC_CIPHER_API_DECRYPT(blowfish_cbc)
96 SilcUInt32 tmp[4], tmp2[4], tiv[4];
99 SILC_CBC_GET_IV(tiv, iv);
101 SILC_CBC_DEC_PRE(tmp, src);
102 blowfish_decrypt((BlowfishContext *)context, tmp, tmp2, 16);
103 SILC_CBC_DEC_POST(tmp2, dst, src, tmp, tiv);
105 for (i = 16; i < len; i += 16) {
106 SILC_CBC_DEC_PRE(tmp, src);
107 blowfish_decrypt((BlowfishContext *)context, tmp, tmp2, 16);
108 SILC_CBC_DEC_POST(tmp2, dst, src, tmp, tiv);
111 SILC_CBC_PUT_IV(tiv, iv);
116 static u32 bf_pbox[16 + 2] =
118 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
119 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
120 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
121 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
122 0x9216d5d9, 0x8979fb1b,
125 static u32 bf_sbox[256 * 4] =
127 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
128 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
129 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
130 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
131 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
132 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
133 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
134 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
135 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
136 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
137 0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
138 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
139 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
140 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
141 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
142 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
143 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
144 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
145 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
146 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
147 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
148 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
149 0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
150 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
151 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
152 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
153 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
154 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
155 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
156 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
157 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
158 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
159 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
160 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
161 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
162 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
163 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
164 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
165 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
166 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
167 0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
168 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
169 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
170 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
171 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
172 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
173 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
174 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
175 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
176 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
177 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
178 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
179 0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
180 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
181 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
182 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
183 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
184 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
185 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
186 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
187 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
188 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
189 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
190 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a,
191 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
192 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
193 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
194 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
195 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
196 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
197 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
198 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
199 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
200 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
201 0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
202 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
203 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
204 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
205 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
206 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
207 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
208 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
209 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
210 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
211 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
212 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
213 0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
214 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
215 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
216 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
217 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
218 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
219 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
220 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
221 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
222 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
223 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
224 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
225 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
226 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
227 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
228 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
229 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
230 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
231 0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
232 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
233 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
234 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
235 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
236 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
237 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
238 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
239 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
240 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
241 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
242 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
243 0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
244 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
245 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
246 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
247 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
248 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
249 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
250 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
251 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
252 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
253 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
254 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7,
255 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
256 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
257 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
258 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
259 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
260 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
261 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
262 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
263 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
264 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
265 0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
266 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
267 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
268 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
269 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
270 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
271 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
272 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
273 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
274 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
275 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
276 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
277 0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
278 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
279 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
280 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
281 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
282 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
283 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
284 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
285 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
286 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
287 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
288 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
289 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
290 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
291 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
292 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
293 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
294 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
295 0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
296 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
297 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
298 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
299 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
300 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
301 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
302 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
303 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
304 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
305 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
306 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
307 0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
308 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
309 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
310 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
311 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
312 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
313 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
314 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
315 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
316 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
317 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
318 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0,
319 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
320 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
321 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
322 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
323 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
324 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
325 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
326 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
327 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
328 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
329 0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
330 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
331 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
332 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
333 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
334 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
335 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
336 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
337 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
338 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
339 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
340 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
341 0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
342 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
343 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
344 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
345 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
346 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
347 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
348 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
349 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
350 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
351 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
352 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
353 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
354 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
355 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
356 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
357 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
358 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
359 0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
360 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
361 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
362 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
363 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
364 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
365 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
366 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
367 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
368 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
369 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
370 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
371 0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
372 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
373 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
374 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
375 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
376 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
377 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
378 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
379 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
380 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
381 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
382 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6,
386 * Round loop unrolling macros, S is a pointer to a S-Box array
387 * organized in 4 SilcUInt32s at a row.
390 #define GET32_3(x) (((x) & 0xff))
391 #define GET32_2(x) (((x) >> (8)) & (0xff))
392 #define GET32_1(x) (((x) >> (16)) & (0xff))
393 #define GET32_0(x) (((x) >> (24)) & (0xff))
395 #define bf_F(x) (((S[GET32_0(x)] + S[256 + GET32_1(x)]) ^ \
396 S[512 + GET32_2(x)]) + S[768 + GET32_3(x)])
398 #define ROUND(a, b, n) b^=P[n];a ^= bf_F(b)
401 * The blowfish encipher, processes 64-bit blocks.
402 * NOTE: This function MUSTN'T respect endianess
405 int blowfish_encrypt(BlowfishContext *ctx,
406 u32 *in_blk, u32 *out_blk, int size)
413 for (; size >= 8; size -= 8) {
434 /* yl and yr are switched */
445 int blowfish_decrypt(BlowfishContext *ctx,
446 u32 *in_blk, u32 *out_blk, int size)
453 for (; size >= 8; size -= 8) {
474 /* yl and yr are switched */
485 /* Sets the blowfish S and P boxes for encryption and decryption. */
487 int blowfish_set_key(BlowfishContext *ctx,
488 unsigned char *key, int keybytes)
498 /* Copy the initialization s-boxes */
500 for (i = 0, count = 0; i < 256; i++)
501 for (j = 0; j < 4; j++, count++)
502 S[count] = bf_sbox[count];
504 /* Set the p-boxes */
506 for (i = 0; i < 16 + 2; i++)
509 /* Actual subkey generation */
511 for (j = 0, i = 0; i < 16 + 2; i++)
513 temp = (((u32) key[j] << 24) |
514 ((u32) key[(j + 1) % keybytes] << 16) |
515 ((u32) key[(j + 2) % keybytes] << 8) |
516 ((u32) key[(j + 3) % keybytes] ));
519 j = (j + 4) % keybytes;
522 data[0] = 0x00000000;
523 data[1] = 0x00000000;
525 for (i = 0; i < 16 + 2; i += 2)
527 blowfish_encrypt(ctx, data, data, 8);
533 for (i = 0; i < 4; i++)
535 for (j = 0, count = i * 256; j < 256; j += 2, count += 2)
537 blowfish_encrypt(ctx, data, data, 8);
540 S[count + 1] = data[1];