Annotation of sys/crypto/blf.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: blf.c,v 1.6 2005/03/24 11:43:40 hshoexer Exp $ */
2:
3: /*
4: * Blowfish block cipher for OpenBSD
5: * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
6: * All rights reserved.
7: *
8: * Implementation advice by David Mazieres <dm@lcs.mit.edu>.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by Niels Provos.
21: * 4. The name of the author may not be used to endorse or promote products
22: * derived from this software without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34: */
35:
36: /*
37: * This code is derived from section 14.3 and the given source
38: * in section V of Applied Cryptography, second edition.
39: * Blowfish is an unpatented fast block cipher designed by
40: * Bruce Schneier.
41: */
42:
43: #include <sys/param.h>
44: #include <sys/systm.h>
45:
46: #include <crypto/blf.h>
47:
48: #undef inline
49: #ifdef __GNUC__
50: #define inline __inline
51: #else /* !__GNUC__ */
52: #define inline
53: #endif /* !__GNUC__ */
54:
55: /* Function for Feistel Networks */
56:
57: #define F(s, x) ((((s)[ (((x)>>24)&0xFF)] \
58: + (s)[0x100 + (((x)>>16)&0xFF)]) \
59: ^ (s)[0x200 + (((x)>> 8)&0xFF)]) \
60: + (s)[0x300 + ( (x) &0xFF)])
61:
62: #define BLFRND(s,p,i,j,n) (i ^= F(s,j) ^ (p)[n])
63:
64: void
65: Blowfish_encipher(blf_ctx *c, u_int32_t *x)
66: {
67: u_int32_t Xl;
68: u_int32_t Xr;
69: u_int32_t *s = c->S[0];
70: u_int32_t *p = c->P;
71:
72: Xl = x[0];
73: Xr = x[1];
74:
75: Xl ^= p[0];
76: BLFRND(s, p, Xr, Xl, 1); BLFRND(s, p, Xl, Xr, 2);
77: BLFRND(s, p, Xr, Xl, 3); BLFRND(s, p, Xl, Xr, 4);
78: BLFRND(s, p, Xr, Xl, 5); BLFRND(s, p, Xl, Xr, 6);
79: BLFRND(s, p, Xr, Xl, 7); BLFRND(s, p, Xl, Xr, 8);
80: BLFRND(s, p, Xr, Xl, 9); BLFRND(s, p, Xl, Xr, 10);
81: BLFRND(s, p, Xr, Xl, 11); BLFRND(s, p, Xl, Xr, 12);
82: BLFRND(s, p, Xr, Xl, 13); BLFRND(s, p, Xl, Xr, 14);
83: BLFRND(s, p, Xr, Xl, 15); BLFRND(s, p, Xl, Xr, 16);
84:
85: x[0] = Xr ^ p[17];
86: x[1] = Xl;
87: }
88:
89: void
90: Blowfish_decipher(blf_ctx *c, u_int32_t *x)
91: {
92: u_int32_t Xl;
93: u_int32_t Xr;
94: u_int32_t *s = c->S[0];
95: u_int32_t *p = c->P;
96:
97: Xl = x[0];
98: Xr = x[1];
99:
100: Xl ^= p[17];
101: BLFRND(s, p, Xr, Xl, 16); BLFRND(s, p, Xl, Xr, 15);
102: BLFRND(s, p, Xr, Xl, 14); BLFRND(s, p, Xl, Xr, 13);
103: BLFRND(s, p, Xr, Xl, 12); BLFRND(s, p, Xl, Xr, 11);
104: BLFRND(s, p, Xr, Xl, 10); BLFRND(s, p, Xl, Xr, 9);
105: BLFRND(s, p, Xr, Xl, 8); BLFRND(s, p, Xl, Xr, 7);
106: BLFRND(s, p, Xr, Xl, 6); BLFRND(s, p, Xl, Xr, 5);
107: BLFRND(s, p, Xr, Xl, 4); BLFRND(s, p, Xl, Xr, 3);
108: BLFRND(s, p, Xr, Xl, 2); BLFRND(s, p, Xl, Xr, 1);
109:
110: x[0] = Xr ^ p[0];
111: x[1] = Xl;
112: }
113:
114: void
115: Blowfish_initstate(blf_ctx *c)
116: {
117: /* P-box and S-box tables initialized with digits of Pi */
118:
119: static const blf_ctx initstate =
120:
121: { {
122: {
123: 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
124: 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
125: 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
126: 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
127: 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
128: 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
129: 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
130: 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
131: 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
132: 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
133: 0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
134: 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
135: 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
136: 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
137: 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
138: 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
139: 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
140: 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
141: 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
142: 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
143: 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
144: 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
145: 0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
146: 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
147: 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
148: 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
149: 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
150: 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
151: 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
152: 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
153: 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
154: 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
155: 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
156: 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
157: 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
158: 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
159: 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
160: 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
161: 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
162: 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
163: 0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
164: 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
165: 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
166: 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
167: 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
168: 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
169: 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
170: 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
171: 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
172: 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
173: 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
174: 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
175: 0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
176: 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
177: 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
178: 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
179: 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
180: 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
181: 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
182: 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
183: 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
184: 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
185: 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
186: 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a},
187: {
188: 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
189: 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
190: 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
191: 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
192: 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
193: 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
194: 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
195: 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
196: 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
197: 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
198: 0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
199: 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
200: 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
201: 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
202: 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
203: 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
204: 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
205: 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
206: 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
207: 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
208: 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
209: 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
210: 0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
211: 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
212: 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
213: 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
214: 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
215: 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
216: 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
217: 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
218: 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
219: 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
220: 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
221: 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
222: 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
223: 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
224: 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
225: 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
226: 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
227: 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
228: 0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
229: 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
230: 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
231: 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
232: 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
233: 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
234: 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
235: 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
236: 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
237: 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
238: 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
239: 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
240: 0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
241: 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
242: 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
243: 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
244: 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
245: 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
246: 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
247: 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
248: 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
249: 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
250: 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
251: 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7},
252: {
253: 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
254: 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
255: 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
256: 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
257: 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
258: 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
259: 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
260: 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
261: 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
262: 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
263: 0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
264: 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
265: 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
266: 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
267: 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
268: 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
269: 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
270: 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
271: 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
272: 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
273: 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
274: 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
275: 0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
276: 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
277: 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
278: 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
279: 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
280: 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
281: 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
282: 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
283: 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
284: 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
285: 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
286: 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
287: 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
288: 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
289: 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
290: 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
291: 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
292: 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
293: 0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
294: 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
295: 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
296: 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
297: 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
298: 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
299: 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
300: 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
301: 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
302: 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
303: 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
304: 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
305: 0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
306: 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
307: 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
308: 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
309: 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
310: 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
311: 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
312: 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
313: 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
314: 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
315: 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
316: 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0},
317: {
318: 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
319: 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
320: 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
321: 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
322: 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
323: 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
324: 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
325: 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
326: 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
327: 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
328: 0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
329: 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
330: 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
331: 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
332: 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
333: 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
334: 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
335: 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
336: 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
337: 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
338: 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
339: 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
340: 0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
341: 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
342: 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
343: 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
344: 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
345: 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
346: 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
347: 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
348: 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
349: 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
350: 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
351: 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
352: 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
353: 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
354: 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
355: 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
356: 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
357: 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
358: 0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
359: 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
360: 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
361: 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
362: 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
363: 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
364: 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
365: 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
366: 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
367: 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
368: 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
369: 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
370: 0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
371: 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
372: 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
373: 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
374: 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
375: 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
376: 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
377: 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
378: 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
379: 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
380: 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
381: 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6}
382: },
383: {
384: 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
385: 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
386: 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
387: 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
388: 0x9216d5d9, 0x8979fb1b
389: } };
390:
391: *c = initstate;
392: }
393:
394: u_int32_t
395: Blowfish_stream2word(const u_int8_t *data, u_int16_t databytes,
396: u_int16_t *current)
397: {
398: u_int8_t i;
399: u_int16_t j;
400: u_int32_t temp;
401:
402: temp = 0x00000000;
403: j = *current;
404:
405: for (i = 0; i < 4; i++, j++) {
406: if (j >= databytes)
407: j = 0;
408: temp = (temp << 8) | data[j];
409: }
410:
411: *current = j;
412: return temp;
413: }
414:
415: void
416: Blowfish_expand0state(blf_ctx *c, const u_int8_t *key, u_int16_t keybytes)
417: {
418: u_int16_t i;
419: u_int16_t j;
420: u_int16_t k;
421: u_int32_t temp;
422: u_int32_t data[2];
423:
424: j = 0;
425: for (i = 0; i < BLF_N + 2; i++) {
426: /* Extract 4 int8 to 1 int32 from keystream */
427: temp = Blowfish_stream2word(key, keybytes, &j);
428: c->P[i] = c->P[i] ^ temp;
429: }
430:
431: j = 0;
432: data[0] = 0x00000000;
433: data[1] = 0x00000000;
434: for (i = 0; i < BLF_N + 2; i += 2) {
435: Blowfish_encipher(c, data);
436:
437: c->P[i] = data[0];
438: c->P[i + 1] = data[1];
439: }
440:
441: for (i = 0; i < 4; i++) {
442: for (k = 0; k < 256; k += 2) {
443: Blowfish_encipher(c, data);
444:
445: c->S[i][k] = data[0];
446: c->S[i][k + 1] = data[1];
447: }
448: }
449: }
450:
451:
452: void
453: Blowfish_expandstate(blf_ctx *c, const u_int8_t *data, u_int16_t databytes,
454: const u_int8_t *key, u_int16_t keybytes)
455: {
456: u_int16_t i;
457: u_int16_t j;
458: u_int16_t k;
459: u_int32_t temp;
460: u_int32_t d[2];
461:
462: j = 0;
463: for (i = 0; i < BLF_N + 2; i++) {
464: /* Extract 4 int8 to 1 int32 from keystream */
465: temp = Blowfish_stream2word(key, keybytes, &j);
466: c->P[i] = c->P[i] ^ temp;
467: }
468:
469: j = 0;
470: d[0] = 0x00000000;
471: d[1] = 0x00000000;
472: for (i = 0; i < BLF_N + 2; i += 2) {
473: d[0] ^= Blowfish_stream2word(data, databytes, &j);
474: d[1] ^= Blowfish_stream2word(data, databytes, &j);
475: Blowfish_encipher(c, d);
476:
477: c->P[i] = d[0];
478: c->P[i + 1] = d[1];
479: }
480:
481: for (i = 0; i < 4; i++) {
482: for (k = 0; k < 256; k += 2) {
483: d[0]^= Blowfish_stream2word(data, databytes, &j);
484: d[1] ^= Blowfish_stream2word(data, databytes, &j);
485: Blowfish_encipher(c, d);
486:
487: c->S[i][k] = d[0];
488: c->S[i][k + 1] = d[1];
489: }
490: }
491:
492: }
493:
494: void
495: blf_key(blf_ctx *c, const u_int8_t *k, u_int16_t len)
496: {
497: /* Initalize S-boxes and subkeys with Pi */
498: Blowfish_initstate(c);
499:
500: /* Transform S-boxes and subkeys with key */
501: Blowfish_expand0state(c, k, len);
502: }
503:
504: void
505: blf_enc(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
506: {
507: u_int32_t *d;
508: u_int16_t i;
509:
510: d = data;
511: for (i = 0; i < blocks; i++) {
512: Blowfish_encipher(c, d);
513: d += 2;
514: }
515: }
516:
517: void
518: blf_dec(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
519: {
520: u_int32_t *d;
521: u_int16_t i;
522:
523: d = data;
524: for (i = 0; i < blocks; i++) {
525: Blowfish_decipher(c, d);
526: d += 2;
527: }
528: }
529:
530: void
531: blf_ecb_encrypt(blf_ctx *c, u_int8_t *data, u_int32_t len)
532: {
533: u_int32_t l, r, d[2];
534: u_int32_t i;
535:
536: for (i = 0; i < len; i += 8) {
537: l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
538: r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
539: d[0] = l;
540: d[1] = r;
541: Blowfish_encipher(c, d);
542: l = d[0];
543: r = d[1];
544: data[0] = l >> 24 & 0xff;
545: data[1] = l >> 16 & 0xff;
546: data[2] = l >> 8 & 0xff;
547: data[3] = l & 0xff;
548: data[4] = r >> 24 & 0xff;
549: data[5] = r >> 16 & 0xff;
550: data[6] = r >> 8 & 0xff;
551: data[7] = r & 0xff;
552: data += 8;
553: }
554: }
555:
556: void
557: blf_ecb_decrypt(blf_ctx *c, u_int8_t *data, u_int32_t len)
558: {
559: u_int32_t l, r, d[2];
560: u_int32_t i;
561:
562: for (i = 0; i < len; i += 8) {
563: l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
564: r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
565: d[0] = l;
566: d[1] = r;
567: Blowfish_decipher(c, d);
568: l = d[0];
569: r = d[1];
570: data[0] = l >> 24 & 0xff;
571: data[1] = l >> 16 & 0xff;
572: data[2] = l >> 8 & 0xff;
573: data[3] = l & 0xff;
574: data[4] = r >> 24 & 0xff;
575: data[5] = r >> 16 & 0xff;
576: data[6] = r >> 8 & 0xff;
577: data[7] = r & 0xff;
578: data += 8;
579: }
580: }
581:
582: void
583: blf_cbc_encrypt(blf_ctx *c, u_int8_t *iv, u_int8_t *data, u_int32_t len)
584: {
585: u_int32_t l, r, d[2];
586: u_int32_t i, j;
587:
588: for (i = 0; i < len; i += 8) {
589: for (j = 0; j < 8; j++)
590: data[j] ^= iv[j];
591: l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
592: r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
593: d[0] = l;
594: d[1] = r;
595: Blowfish_encipher(c, d);
596: l = d[0];
597: r = d[1];
598: data[0] = l >> 24 & 0xff;
599: data[1] = l >> 16 & 0xff;
600: data[2] = l >> 8 & 0xff;
601: data[3] = l & 0xff;
602: data[4] = r >> 24 & 0xff;
603: data[5] = r >> 16 & 0xff;
604: data[6] = r >> 8 & 0xff;
605: data[7] = r & 0xff;
606: iv = data;
607: data += 8;
608: }
609: }
610:
611: void
612: blf_cbc_decrypt(blf_ctx *c, u_int8_t *iva, u_int8_t *data, u_int32_t len)
613: {
614: u_int32_t l, r, d[2];
615: u_int8_t *iv;
616: u_int32_t i, j;
617:
618: iv = data + len - 16;
619: data = data + len - 8;
620: for (i = len - 8; i >= 8; i -= 8) {
621: l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
622: r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
623: d[0] = l;
624: d[1] = r;
625: Blowfish_decipher(c, d);
626: l = d[0];
627: r = d[1];
628: data[0] = l >> 24 & 0xff;
629: data[1] = l >> 16 & 0xff;
630: data[2] = l >> 8 & 0xff;
631: data[3] = l & 0xff;
632: data[4] = r >> 24 & 0xff;
633: data[5] = r >> 16 & 0xff;
634: data[6] = r >> 8 & 0xff;
635: data[7] = r & 0xff;
636: for (j = 0; j < 8; j++)
637: data[j] ^= iv[j];
638: iv -= 8;
639: data -= 8;
640: }
641: l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
642: r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
643: d[0] = l;
644: d[1] = r;
645: Blowfish_decipher(c, d);
646: l = d[0];
647: r = d[1];
648: data[0] = l >> 24 & 0xff;
649: data[1] = l >> 16 & 0xff;
650: data[2] = l >> 8 & 0xff;
651: data[3] = l & 0xff;
652: data[4] = r >> 24 & 0xff;
653: data[5] = r >> 16 & 0xff;
654: data[6] = r >> 8 & 0xff;
655: data[7] = r & 0xff;
656: for (j = 0; j < 8; j++)
657: data[j] ^= iva[j];
658: }
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