Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Cryptographic API. |
| 3 | * |
| 4 | * Serpent Cipher Algorithm. |
| 5 | * |
| 6 | * Copyright (C) 2002 Dag Arne Osvik <osvik@ii.uib.no> |
| 7 | * 2003 Herbert Valerio Riedel <hvr@gnu.org> |
| 8 | * |
| 9 | * Added tnepres support: Ruben Jesus Garcia Hernandez <ruben@ugr.es>, 18.10.2004 |
| 10 | * Based on code by hvr |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/errno.h> |
| 21 | #include <asm/byteorder.h> |
| 22 | #include <linux/crypto.h> |
Herbert Xu | 06ace7a | 2005-10-30 21:25:15 +1100 | [diff] [blame] | 23 | #include <linux/types.h> |
Jussi Kivilinna | bc83b82 | 2011-10-18 00:03:08 +0300 | [diff] [blame] | 24 | #include <crypto/serpent.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
| 26 | /* Key is padded to the maximum of 256 bits before round key generation. |
| 27 | * Any key length <= 256 bits (32 bytes) is allowed by the algorithm. |
| 28 | */ |
| 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #define PHI 0x9e3779b9UL |
| 31 | |
| 32 | #define keyiter(a,b,c,d,i,j) \ |
| 33 | b ^= d; b ^= c; b ^= a; b ^= PHI ^ i; b = rol32(b,11); k[j] = b; |
| 34 | |
| 35 | #define loadkeys(x0,x1,x2,x3,i) \ |
| 36 | x0=k[i]; x1=k[i+1]; x2=k[i+2]; x3=k[i+3]; |
| 37 | |
| 38 | #define storekeys(x0,x1,x2,x3,i) \ |
| 39 | k[i]=x0; k[i+1]=x1; k[i+2]=x2; k[i+3]=x3; |
| 40 | |
| 41 | #define K(x0,x1,x2,x3,i) \ |
| 42 | x3 ^= k[4*(i)+3]; x2 ^= k[4*(i)+2]; \ |
| 43 | x1 ^= k[4*(i)+1]; x0 ^= k[4*(i)+0]; |
| 44 | |
| 45 | #define LK(x0,x1,x2,x3,x4,i) \ |
| 46 | x0=rol32(x0,13);\ |
| 47 | x2=rol32(x2,3); x1 ^= x0; x4 = x0 << 3; \ |
| 48 | x3 ^= x2; x1 ^= x2; \ |
| 49 | x1=rol32(x1,1); x3 ^= x4; \ |
| 50 | x3=rol32(x3,7); x4 = x1; \ |
| 51 | x0 ^= x1; x4 <<= 7; x2 ^= x3; \ |
| 52 | x0 ^= x3; x2 ^= x4; x3 ^= k[4*i+3]; \ |
| 53 | x1 ^= k[4*i+1]; x0=rol32(x0,5); x2=rol32(x2,22);\ |
| 54 | x0 ^= k[4*i+0]; x2 ^= k[4*i+2]; |
| 55 | |
| 56 | #define KL(x0,x1,x2,x3,x4,i) \ |
| 57 | x0 ^= k[4*i+0]; x1 ^= k[4*i+1]; x2 ^= k[4*i+2]; \ |
| 58 | x3 ^= k[4*i+3]; x0=ror32(x0,5); x2=ror32(x2,22);\ |
| 59 | x4 = x1; x2 ^= x3; x0 ^= x3; \ |
| 60 | x4 <<= 7; x0 ^= x1; x1=ror32(x1,1); \ |
| 61 | x2 ^= x4; x3=ror32(x3,7); x4 = x0 << 3; \ |
| 62 | x1 ^= x0; x3 ^= x4; x0=ror32(x0,13);\ |
| 63 | x1 ^= x2; x3 ^= x2; x2=ror32(x2,3); |
| 64 | |
| 65 | #define S0(x0,x1,x2,x3,x4) \ |
| 66 | x4 = x3; \ |
| 67 | x3 |= x0; x0 ^= x4; x4 ^= x2; \ |
| 68 | x4 =~ x4; x3 ^= x1; x1 &= x0; \ |
| 69 | x1 ^= x4; x2 ^= x0; x0 ^= x3; \ |
| 70 | x4 |= x0; x0 ^= x2; x2 &= x1; \ |
| 71 | x3 ^= x2; x1 =~ x1; x2 ^= x4; \ |
| 72 | x1 ^= x2; |
| 73 | |
| 74 | #define S1(x0,x1,x2,x3,x4) \ |
| 75 | x4 = x1; \ |
| 76 | x1 ^= x0; x0 ^= x3; x3 =~ x3; \ |
| 77 | x4 &= x1; x0 |= x1; x3 ^= x2; \ |
| 78 | x0 ^= x3; x1 ^= x3; x3 ^= x4; \ |
| 79 | x1 |= x4; x4 ^= x2; x2 &= x0; \ |
| 80 | x2 ^= x1; x1 |= x0; x0 =~ x0; \ |
| 81 | x0 ^= x2; x4 ^= x1; |
| 82 | |
| 83 | #define S2(x0,x1,x2,x3,x4) \ |
| 84 | x3 =~ x3; \ |
| 85 | x1 ^= x0; x4 = x0; x0 &= x2; \ |
| 86 | x0 ^= x3; x3 |= x4; x2 ^= x1; \ |
| 87 | x3 ^= x1; x1 &= x0; x0 ^= x2; \ |
| 88 | x2 &= x3; x3 |= x1; x0 =~ x0; \ |
| 89 | x3 ^= x0; x4 ^= x0; x0 ^= x2; \ |
| 90 | x1 |= x2; |
| 91 | |
| 92 | #define S3(x0,x1,x2,x3,x4) \ |
| 93 | x4 = x1; \ |
| 94 | x1 ^= x3; x3 |= x0; x4 &= x0; \ |
| 95 | x0 ^= x2; x2 ^= x1; x1 &= x3; \ |
| 96 | x2 ^= x3; x0 |= x4; x4 ^= x3; \ |
| 97 | x1 ^= x0; x0 &= x3; x3 &= x4; \ |
| 98 | x3 ^= x2; x4 |= x1; x2 &= x1; \ |
| 99 | x4 ^= x3; x0 ^= x3; x3 ^= x2; |
| 100 | |
| 101 | #define S4(x0,x1,x2,x3,x4) \ |
| 102 | x4 = x3; \ |
| 103 | x3 &= x0; x0 ^= x4; \ |
| 104 | x3 ^= x2; x2 |= x4; x0 ^= x1; \ |
| 105 | x4 ^= x3; x2 |= x0; \ |
| 106 | x2 ^= x1; x1 &= x0; \ |
| 107 | x1 ^= x4; x4 &= x2; x2 ^= x3; \ |
| 108 | x4 ^= x0; x3 |= x1; x1 =~ x1; \ |
| 109 | x3 ^= x0; |
| 110 | |
| 111 | #define S5(x0,x1,x2,x3,x4) \ |
| 112 | x4 = x1; x1 |= x0; \ |
| 113 | x2 ^= x1; x3 =~ x3; x4 ^= x0; \ |
| 114 | x0 ^= x2; x1 &= x4; x4 |= x3; \ |
| 115 | x4 ^= x0; x0 &= x3; x1 ^= x3; \ |
| 116 | x3 ^= x2; x0 ^= x1; x2 &= x4; \ |
| 117 | x1 ^= x2; x2 &= x0; \ |
| 118 | x3 ^= x2; |
| 119 | |
| 120 | #define S6(x0,x1,x2,x3,x4) \ |
| 121 | x4 = x1; \ |
| 122 | x3 ^= x0; x1 ^= x2; x2 ^= x0; \ |
| 123 | x0 &= x3; x1 |= x3; x4 =~ x4; \ |
| 124 | x0 ^= x1; x1 ^= x2; \ |
| 125 | x3 ^= x4; x4 ^= x0; x2 &= x0; \ |
| 126 | x4 ^= x1; x2 ^= x3; x3 &= x1; \ |
| 127 | x3 ^= x0; x1 ^= x2; |
| 128 | |
| 129 | #define S7(x0,x1,x2,x3,x4) \ |
| 130 | x1 =~ x1; \ |
| 131 | x4 = x1; x0 =~ x0; x1 &= x2; \ |
| 132 | x1 ^= x3; x3 |= x4; x4 ^= x2; \ |
| 133 | x2 ^= x3; x3 ^= x0; x0 |= x1; \ |
| 134 | x2 &= x0; x0 ^= x4; x4 ^= x3; \ |
| 135 | x3 &= x0; x4 ^= x1; \ |
| 136 | x2 ^= x4; x3 ^= x1; x4 |= x0; \ |
| 137 | x4 ^= x1; |
| 138 | |
| 139 | #define SI0(x0,x1,x2,x3,x4) \ |
| 140 | x4 = x3; x1 ^= x0; \ |
| 141 | x3 |= x1; x4 ^= x1; x0 =~ x0; \ |
| 142 | x2 ^= x3; x3 ^= x0; x0 &= x1; \ |
| 143 | x0 ^= x2; x2 &= x3; x3 ^= x4; \ |
| 144 | x2 ^= x3; x1 ^= x3; x3 &= x0; \ |
| 145 | x1 ^= x0; x0 ^= x2; x4 ^= x3; |
| 146 | |
| 147 | #define SI1(x0,x1,x2,x3,x4) \ |
| 148 | x1 ^= x3; x4 = x0; \ |
| 149 | x0 ^= x2; x2 =~ x2; x4 |= x1; \ |
| 150 | x4 ^= x3; x3 &= x1; x1 ^= x2; \ |
| 151 | x2 &= x4; x4 ^= x1; x1 |= x3; \ |
| 152 | x3 ^= x0; x2 ^= x0; x0 |= x4; \ |
| 153 | x2 ^= x4; x1 ^= x0; \ |
| 154 | x4 ^= x1; |
| 155 | |
| 156 | #define SI2(x0,x1,x2,x3,x4) \ |
| 157 | x2 ^= x1; x4 = x3; x3 =~ x3; \ |
| 158 | x3 |= x2; x2 ^= x4; x4 ^= x0; \ |
| 159 | x3 ^= x1; x1 |= x2; x2 ^= x0; \ |
| 160 | x1 ^= x4; x4 |= x3; x2 ^= x3; \ |
| 161 | x4 ^= x2; x2 &= x1; \ |
| 162 | x2 ^= x3; x3 ^= x4; x4 ^= x0; |
| 163 | |
| 164 | #define SI3(x0,x1,x2,x3,x4) \ |
| 165 | x2 ^= x1; \ |
| 166 | x4 = x1; x1 &= x2; \ |
| 167 | x1 ^= x0; x0 |= x4; x4 ^= x3; \ |
| 168 | x0 ^= x3; x3 |= x1; x1 ^= x2; \ |
| 169 | x1 ^= x3; x0 ^= x2; x2 ^= x3; \ |
| 170 | x3 &= x1; x1 ^= x0; x0 &= x2; \ |
| 171 | x4 ^= x3; x3 ^= x0; x0 ^= x1; |
| 172 | |
| 173 | #define SI4(x0,x1,x2,x3,x4) \ |
| 174 | x2 ^= x3; x4 = x0; x0 &= x1; \ |
| 175 | x0 ^= x2; x2 |= x3; x4 =~ x4; \ |
| 176 | x1 ^= x0; x0 ^= x2; x2 &= x4; \ |
| 177 | x2 ^= x0; x0 |= x4; \ |
| 178 | x0 ^= x3; x3 &= x2; \ |
| 179 | x4 ^= x3; x3 ^= x1; x1 &= x0; \ |
| 180 | x4 ^= x1; x0 ^= x3; |
| 181 | |
| 182 | #define SI5(x0,x1,x2,x3,x4) \ |
| 183 | x4 = x1; x1 |= x2; \ |
| 184 | x2 ^= x4; x1 ^= x3; x3 &= x4; \ |
| 185 | x2 ^= x3; x3 |= x0; x0 =~ x0; \ |
| 186 | x3 ^= x2; x2 |= x0; x4 ^= x1; \ |
| 187 | x2 ^= x4; x4 &= x0; x0 ^= x1; \ |
| 188 | x1 ^= x3; x0 &= x2; x2 ^= x3; \ |
| 189 | x0 ^= x2; x2 ^= x4; x4 ^= x3; |
| 190 | |
| 191 | #define SI6(x0,x1,x2,x3,x4) \ |
| 192 | x0 ^= x2; \ |
| 193 | x4 = x0; x0 &= x3; x2 ^= x3; \ |
| 194 | x0 ^= x2; x3 ^= x1; x2 |= x4; \ |
| 195 | x2 ^= x3; x3 &= x0; x0 =~ x0; \ |
| 196 | x3 ^= x1; x1 &= x2; x4 ^= x0; \ |
| 197 | x3 ^= x4; x4 ^= x2; x0 ^= x1; \ |
| 198 | x2 ^= x0; |
| 199 | |
| 200 | #define SI7(x0,x1,x2,x3,x4) \ |
| 201 | x4 = x3; x3 &= x0; x0 ^= x2; \ |
| 202 | x2 |= x4; x4 ^= x1; x0 =~ x0; \ |
| 203 | x1 |= x3; x4 ^= x0; x0 &= x2; \ |
| 204 | x0 ^= x1; x1 &= x2; x3 ^= x2; \ |
| 205 | x4 ^= x3; x2 &= x3; x3 |= x0; \ |
| 206 | x1 ^= x4; x3 ^= x4; x4 &= x0; \ |
| 207 | x4 ^= x2; |
| 208 | |
Jussi Kivilinna | bc83b82 | 2011-10-18 00:03:08 +0300 | [diff] [blame] | 209 | int serpent_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | { |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 211 | struct serpent_ctx *ctx = crypto_tfm_ctx(tfm); |
| 212 | u32 *k = ctx->expkey; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | u8 *k8 = (u8 *)k; |
| 214 | u32 r0,r1,r2,r3,r4; |
| 215 | int i; |
| 216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | /* Copy key, add padding */ |
| 218 | |
| 219 | for (i = 0; i < keylen; ++i) |
| 220 | k8[i] = key[i]; |
| 221 | if (i < SERPENT_MAX_KEY_SIZE) |
| 222 | k8[i++] = 1; |
| 223 | while (i < SERPENT_MAX_KEY_SIZE) |
| 224 | k8[i++] = 0; |
| 225 | |
| 226 | /* Expand key using polynomial */ |
| 227 | |
| 228 | r0 = le32_to_cpu(k[3]); |
| 229 | r1 = le32_to_cpu(k[4]); |
| 230 | r2 = le32_to_cpu(k[5]); |
| 231 | r3 = le32_to_cpu(k[6]); |
| 232 | r4 = le32_to_cpu(k[7]); |
| 233 | |
| 234 | keyiter(le32_to_cpu(k[0]),r0,r4,r2,0,0); |
| 235 | keyiter(le32_to_cpu(k[1]),r1,r0,r3,1,1); |
| 236 | keyiter(le32_to_cpu(k[2]),r2,r1,r4,2,2); |
| 237 | keyiter(le32_to_cpu(k[3]),r3,r2,r0,3,3); |
| 238 | keyiter(le32_to_cpu(k[4]),r4,r3,r1,4,4); |
| 239 | keyiter(le32_to_cpu(k[5]),r0,r4,r2,5,5); |
| 240 | keyiter(le32_to_cpu(k[6]),r1,r0,r3,6,6); |
| 241 | keyiter(le32_to_cpu(k[7]),r2,r1,r4,7,7); |
| 242 | |
| 243 | keyiter(k[ 0],r3,r2,r0, 8, 8); keyiter(k[ 1],r4,r3,r1, 9, 9); |
| 244 | keyiter(k[ 2],r0,r4,r2, 10, 10); keyiter(k[ 3],r1,r0,r3, 11, 11); |
| 245 | keyiter(k[ 4],r2,r1,r4, 12, 12); keyiter(k[ 5],r3,r2,r0, 13, 13); |
| 246 | keyiter(k[ 6],r4,r3,r1, 14, 14); keyiter(k[ 7],r0,r4,r2, 15, 15); |
| 247 | keyiter(k[ 8],r1,r0,r3, 16, 16); keyiter(k[ 9],r2,r1,r4, 17, 17); |
| 248 | keyiter(k[ 10],r3,r2,r0, 18, 18); keyiter(k[ 11],r4,r3,r1, 19, 19); |
| 249 | keyiter(k[ 12],r0,r4,r2, 20, 20); keyiter(k[ 13],r1,r0,r3, 21, 21); |
| 250 | keyiter(k[ 14],r2,r1,r4, 22, 22); keyiter(k[ 15],r3,r2,r0, 23, 23); |
| 251 | keyiter(k[ 16],r4,r3,r1, 24, 24); keyiter(k[ 17],r0,r4,r2, 25, 25); |
| 252 | keyiter(k[ 18],r1,r0,r3, 26, 26); keyiter(k[ 19],r2,r1,r4, 27, 27); |
| 253 | keyiter(k[ 20],r3,r2,r0, 28, 28); keyiter(k[ 21],r4,r3,r1, 29, 29); |
| 254 | keyiter(k[ 22],r0,r4,r2, 30, 30); keyiter(k[ 23],r1,r0,r3, 31, 31); |
| 255 | |
| 256 | k += 50; |
| 257 | |
| 258 | keyiter(k[-26],r2,r1,r4, 32,-18); keyiter(k[-25],r3,r2,r0, 33,-17); |
| 259 | keyiter(k[-24],r4,r3,r1, 34,-16); keyiter(k[-23],r0,r4,r2, 35,-15); |
| 260 | keyiter(k[-22],r1,r0,r3, 36,-14); keyiter(k[-21],r2,r1,r4, 37,-13); |
| 261 | keyiter(k[-20],r3,r2,r0, 38,-12); keyiter(k[-19],r4,r3,r1, 39,-11); |
| 262 | keyiter(k[-18],r0,r4,r2, 40,-10); keyiter(k[-17],r1,r0,r3, 41, -9); |
| 263 | keyiter(k[-16],r2,r1,r4, 42, -8); keyiter(k[-15],r3,r2,r0, 43, -7); |
| 264 | keyiter(k[-14],r4,r3,r1, 44, -6); keyiter(k[-13],r0,r4,r2, 45, -5); |
| 265 | keyiter(k[-12],r1,r0,r3, 46, -4); keyiter(k[-11],r2,r1,r4, 47, -3); |
| 266 | keyiter(k[-10],r3,r2,r0, 48, -2); keyiter(k[ -9],r4,r3,r1, 49, -1); |
| 267 | keyiter(k[ -8],r0,r4,r2, 50, 0); keyiter(k[ -7],r1,r0,r3, 51, 1); |
| 268 | keyiter(k[ -6],r2,r1,r4, 52, 2); keyiter(k[ -5],r3,r2,r0, 53, 3); |
| 269 | keyiter(k[ -4],r4,r3,r1, 54, 4); keyiter(k[ -3],r0,r4,r2, 55, 5); |
| 270 | keyiter(k[ -2],r1,r0,r3, 56, 6); keyiter(k[ -1],r2,r1,r4, 57, 7); |
| 271 | keyiter(k[ 0],r3,r2,r0, 58, 8); keyiter(k[ 1],r4,r3,r1, 59, 9); |
| 272 | keyiter(k[ 2],r0,r4,r2, 60, 10); keyiter(k[ 3],r1,r0,r3, 61, 11); |
| 273 | keyiter(k[ 4],r2,r1,r4, 62, 12); keyiter(k[ 5],r3,r2,r0, 63, 13); |
| 274 | keyiter(k[ 6],r4,r3,r1, 64, 14); keyiter(k[ 7],r0,r4,r2, 65, 15); |
| 275 | keyiter(k[ 8],r1,r0,r3, 66, 16); keyiter(k[ 9],r2,r1,r4, 67, 17); |
| 276 | keyiter(k[ 10],r3,r2,r0, 68, 18); keyiter(k[ 11],r4,r3,r1, 69, 19); |
| 277 | keyiter(k[ 12],r0,r4,r2, 70, 20); keyiter(k[ 13],r1,r0,r3, 71, 21); |
| 278 | keyiter(k[ 14],r2,r1,r4, 72, 22); keyiter(k[ 15],r3,r2,r0, 73, 23); |
| 279 | keyiter(k[ 16],r4,r3,r1, 74, 24); keyiter(k[ 17],r0,r4,r2, 75, 25); |
| 280 | keyiter(k[ 18],r1,r0,r3, 76, 26); keyiter(k[ 19],r2,r1,r4, 77, 27); |
| 281 | keyiter(k[ 20],r3,r2,r0, 78, 28); keyiter(k[ 21],r4,r3,r1, 79, 29); |
| 282 | keyiter(k[ 22],r0,r4,r2, 80, 30); keyiter(k[ 23],r1,r0,r3, 81, 31); |
| 283 | |
| 284 | k += 50; |
| 285 | |
| 286 | keyiter(k[-26],r2,r1,r4, 82,-18); keyiter(k[-25],r3,r2,r0, 83,-17); |
| 287 | keyiter(k[-24],r4,r3,r1, 84,-16); keyiter(k[-23],r0,r4,r2, 85,-15); |
| 288 | keyiter(k[-22],r1,r0,r3, 86,-14); keyiter(k[-21],r2,r1,r4, 87,-13); |
| 289 | keyiter(k[-20],r3,r2,r0, 88,-12); keyiter(k[-19],r4,r3,r1, 89,-11); |
| 290 | keyiter(k[-18],r0,r4,r2, 90,-10); keyiter(k[-17],r1,r0,r3, 91, -9); |
| 291 | keyiter(k[-16],r2,r1,r4, 92, -8); keyiter(k[-15],r3,r2,r0, 93, -7); |
| 292 | keyiter(k[-14],r4,r3,r1, 94, -6); keyiter(k[-13],r0,r4,r2, 95, -5); |
| 293 | keyiter(k[-12],r1,r0,r3, 96, -4); keyiter(k[-11],r2,r1,r4, 97, -3); |
| 294 | keyiter(k[-10],r3,r2,r0, 98, -2); keyiter(k[ -9],r4,r3,r1, 99, -1); |
| 295 | keyiter(k[ -8],r0,r4,r2,100, 0); keyiter(k[ -7],r1,r0,r3,101, 1); |
| 296 | keyiter(k[ -6],r2,r1,r4,102, 2); keyiter(k[ -5],r3,r2,r0,103, 3); |
| 297 | keyiter(k[ -4],r4,r3,r1,104, 4); keyiter(k[ -3],r0,r4,r2,105, 5); |
| 298 | keyiter(k[ -2],r1,r0,r3,106, 6); keyiter(k[ -1],r2,r1,r4,107, 7); |
| 299 | keyiter(k[ 0],r3,r2,r0,108, 8); keyiter(k[ 1],r4,r3,r1,109, 9); |
| 300 | keyiter(k[ 2],r0,r4,r2,110, 10); keyiter(k[ 3],r1,r0,r3,111, 11); |
| 301 | keyiter(k[ 4],r2,r1,r4,112, 12); keyiter(k[ 5],r3,r2,r0,113, 13); |
| 302 | keyiter(k[ 6],r4,r3,r1,114, 14); keyiter(k[ 7],r0,r4,r2,115, 15); |
| 303 | keyiter(k[ 8],r1,r0,r3,116, 16); keyiter(k[ 9],r2,r1,r4,117, 17); |
| 304 | keyiter(k[ 10],r3,r2,r0,118, 18); keyiter(k[ 11],r4,r3,r1,119, 19); |
| 305 | keyiter(k[ 12],r0,r4,r2,120, 20); keyiter(k[ 13],r1,r0,r3,121, 21); |
| 306 | keyiter(k[ 14],r2,r1,r4,122, 22); keyiter(k[ 15],r3,r2,r0,123, 23); |
| 307 | keyiter(k[ 16],r4,r3,r1,124, 24); keyiter(k[ 17],r0,r4,r2,125, 25); |
| 308 | keyiter(k[ 18],r1,r0,r3,126, 26); keyiter(k[ 19],r2,r1,r4,127, 27); |
| 309 | keyiter(k[ 20],r3,r2,r0,128, 28); keyiter(k[ 21],r4,r3,r1,129, 29); |
| 310 | keyiter(k[ 22],r0,r4,r2,130, 30); keyiter(k[ 23],r1,r0,r3,131, 31); |
| 311 | |
| 312 | /* Apply S-boxes */ |
| 313 | |
| 314 | S3(r3,r4,r0,r1,r2); storekeys(r1,r2,r4,r3, 28); loadkeys(r1,r2,r4,r3, 24); |
| 315 | S4(r1,r2,r4,r3,r0); storekeys(r2,r4,r3,r0, 24); loadkeys(r2,r4,r3,r0, 20); |
| 316 | S5(r2,r4,r3,r0,r1); storekeys(r1,r2,r4,r0, 20); loadkeys(r1,r2,r4,r0, 16); |
| 317 | S6(r1,r2,r4,r0,r3); storekeys(r4,r3,r2,r0, 16); loadkeys(r4,r3,r2,r0, 12); |
| 318 | S7(r4,r3,r2,r0,r1); storekeys(r1,r2,r0,r4, 12); loadkeys(r1,r2,r0,r4, 8); |
| 319 | S0(r1,r2,r0,r4,r3); storekeys(r0,r2,r4,r1, 8); loadkeys(r0,r2,r4,r1, 4); |
| 320 | S1(r0,r2,r4,r1,r3); storekeys(r3,r4,r1,r0, 4); loadkeys(r3,r4,r1,r0, 0); |
| 321 | S2(r3,r4,r1,r0,r2); storekeys(r2,r4,r3,r0, 0); loadkeys(r2,r4,r3,r0, -4); |
| 322 | S3(r2,r4,r3,r0,r1); storekeys(r0,r1,r4,r2, -4); loadkeys(r0,r1,r4,r2, -8); |
| 323 | S4(r0,r1,r4,r2,r3); storekeys(r1,r4,r2,r3, -8); loadkeys(r1,r4,r2,r3,-12); |
| 324 | S5(r1,r4,r2,r3,r0); storekeys(r0,r1,r4,r3,-12); loadkeys(r0,r1,r4,r3,-16); |
| 325 | S6(r0,r1,r4,r3,r2); storekeys(r4,r2,r1,r3,-16); loadkeys(r4,r2,r1,r3,-20); |
| 326 | S7(r4,r2,r1,r3,r0); storekeys(r0,r1,r3,r4,-20); loadkeys(r0,r1,r3,r4,-24); |
| 327 | S0(r0,r1,r3,r4,r2); storekeys(r3,r1,r4,r0,-24); loadkeys(r3,r1,r4,r0,-28); |
| 328 | k -= 50; |
| 329 | S1(r3,r1,r4,r0,r2); storekeys(r2,r4,r0,r3, 22); loadkeys(r2,r4,r0,r3, 18); |
| 330 | S2(r2,r4,r0,r3,r1); storekeys(r1,r4,r2,r3, 18); loadkeys(r1,r4,r2,r3, 14); |
| 331 | S3(r1,r4,r2,r3,r0); storekeys(r3,r0,r4,r1, 14); loadkeys(r3,r0,r4,r1, 10); |
| 332 | S4(r3,r0,r4,r1,r2); storekeys(r0,r4,r1,r2, 10); loadkeys(r0,r4,r1,r2, 6); |
| 333 | S5(r0,r4,r1,r2,r3); storekeys(r3,r0,r4,r2, 6); loadkeys(r3,r0,r4,r2, 2); |
| 334 | S6(r3,r0,r4,r2,r1); storekeys(r4,r1,r0,r2, 2); loadkeys(r4,r1,r0,r2, -2); |
| 335 | S7(r4,r1,r0,r2,r3); storekeys(r3,r0,r2,r4, -2); loadkeys(r3,r0,r2,r4, -6); |
| 336 | S0(r3,r0,r2,r4,r1); storekeys(r2,r0,r4,r3, -6); loadkeys(r2,r0,r4,r3,-10); |
| 337 | S1(r2,r0,r4,r3,r1); storekeys(r1,r4,r3,r2,-10); loadkeys(r1,r4,r3,r2,-14); |
| 338 | S2(r1,r4,r3,r2,r0); storekeys(r0,r4,r1,r2,-14); loadkeys(r0,r4,r1,r2,-18); |
| 339 | S3(r0,r4,r1,r2,r3); storekeys(r2,r3,r4,r0,-18); loadkeys(r2,r3,r4,r0,-22); |
| 340 | k -= 50; |
| 341 | S4(r2,r3,r4,r0,r1); storekeys(r3,r4,r0,r1, 28); loadkeys(r3,r4,r0,r1, 24); |
| 342 | S5(r3,r4,r0,r1,r2); storekeys(r2,r3,r4,r1, 24); loadkeys(r2,r3,r4,r1, 20); |
| 343 | S6(r2,r3,r4,r1,r0); storekeys(r4,r0,r3,r1, 20); loadkeys(r4,r0,r3,r1, 16); |
| 344 | S7(r4,r0,r3,r1,r2); storekeys(r2,r3,r1,r4, 16); loadkeys(r2,r3,r1,r4, 12); |
| 345 | S0(r2,r3,r1,r4,r0); storekeys(r1,r3,r4,r2, 12); loadkeys(r1,r3,r4,r2, 8); |
| 346 | S1(r1,r3,r4,r2,r0); storekeys(r0,r4,r2,r1, 8); loadkeys(r0,r4,r2,r1, 4); |
| 347 | S2(r0,r4,r2,r1,r3); storekeys(r3,r4,r0,r1, 4); loadkeys(r3,r4,r0,r1, 0); |
| 348 | S3(r3,r4,r0,r1,r2); storekeys(r1,r2,r4,r3, 0); |
| 349 | |
| 350 | return 0; |
| 351 | } |
Jussi Kivilinna | bc83b82 | 2011-10-18 00:03:08 +0300 | [diff] [blame] | 352 | EXPORT_SYMBOL_GPL(serpent_setkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | |
Jussi Kivilinna | bc83b82 | 2011-10-18 00:03:08 +0300 | [diff] [blame] | 354 | void __serpent_encrypt(struct serpent_ctx *ctx, u8 *dst, const u8 *src) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | { |
Jussi Kivilinna | bc83b82 | 2011-10-18 00:03:08 +0300 | [diff] [blame] | 356 | const u32 *k = ctx->expkey; |
Alexey Dobriyan | d08f74e | 2005-12-23 01:12:25 +0300 | [diff] [blame] | 357 | const __le32 *s = (const __le32 *)src; |
| 358 | __le32 *d = (__le32 *)dst; |
| 359 | u32 r0, r1, r2, r3, r4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
| 361 | /* |
| 362 | * Note: The conversions between u8* and u32* might cause trouble |
| 363 | * on architectures with stricter alignment rules than x86 |
| 364 | */ |
| 365 | |
| 366 | r0 = le32_to_cpu(s[0]); |
| 367 | r1 = le32_to_cpu(s[1]); |
| 368 | r2 = le32_to_cpu(s[2]); |
| 369 | r3 = le32_to_cpu(s[3]); |
| 370 | |
| 371 | K(r0,r1,r2,r3,0); |
| 372 | S0(r0,r1,r2,r3,r4); LK(r2,r1,r3,r0,r4,1); |
| 373 | S1(r2,r1,r3,r0,r4); LK(r4,r3,r0,r2,r1,2); |
| 374 | S2(r4,r3,r0,r2,r1); LK(r1,r3,r4,r2,r0,3); |
| 375 | S3(r1,r3,r4,r2,r0); LK(r2,r0,r3,r1,r4,4); |
| 376 | S4(r2,r0,r3,r1,r4); LK(r0,r3,r1,r4,r2,5); |
| 377 | S5(r0,r3,r1,r4,r2); LK(r2,r0,r3,r4,r1,6); |
| 378 | S6(r2,r0,r3,r4,r1); LK(r3,r1,r0,r4,r2,7); |
| 379 | S7(r3,r1,r0,r4,r2); LK(r2,r0,r4,r3,r1,8); |
| 380 | S0(r2,r0,r4,r3,r1); LK(r4,r0,r3,r2,r1,9); |
| 381 | S1(r4,r0,r3,r2,r1); LK(r1,r3,r2,r4,r0,10); |
| 382 | S2(r1,r3,r2,r4,r0); LK(r0,r3,r1,r4,r2,11); |
| 383 | S3(r0,r3,r1,r4,r2); LK(r4,r2,r3,r0,r1,12); |
| 384 | S4(r4,r2,r3,r0,r1); LK(r2,r3,r0,r1,r4,13); |
| 385 | S5(r2,r3,r0,r1,r4); LK(r4,r2,r3,r1,r0,14); |
| 386 | S6(r4,r2,r3,r1,r0); LK(r3,r0,r2,r1,r4,15); |
| 387 | S7(r3,r0,r2,r1,r4); LK(r4,r2,r1,r3,r0,16); |
| 388 | S0(r4,r2,r1,r3,r0); LK(r1,r2,r3,r4,r0,17); |
| 389 | S1(r1,r2,r3,r4,r0); LK(r0,r3,r4,r1,r2,18); |
| 390 | S2(r0,r3,r4,r1,r2); LK(r2,r3,r0,r1,r4,19); |
| 391 | S3(r2,r3,r0,r1,r4); LK(r1,r4,r3,r2,r0,20); |
| 392 | S4(r1,r4,r3,r2,r0); LK(r4,r3,r2,r0,r1,21); |
| 393 | S5(r4,r3,r2,r0,r1); LK(r1,r4,r3,r0,r2,22); |
| 394 | S6(r1,r4,r3,r0,r2); LK(r3,r2,r4,r0,r1,23); |
| 395 | S7(r3,r2,r4,r0,r1); LK(r1,r4,r0,r3,r2,24); |
| 396 | S0(r1,r4,r0,r3,r2); LK(r0,r4,r3,r1,r2,25); |
| 397 | S1(r0,r4,r3,r1,r2); LK(r2,r3,r1,r0,r4,26); |
| 398 | S2(r2,r3,r1,r0,r4); LK(r4,r3,r2,r0,r1,27); |
| 399 | S3(r4,r3,r2,r0,r1); LK(r0,r1,r3,r4,r2,28); |
| 400 | S4(r0,r1,r3,r4,r2); LK(r1,r3,r4,r2,r0,29); |
| 401 | S5(r1,r3,r4,r2,r0); LK(r0,r1,r3,r2,r4,30); |
| 402 | S6(r0,r1,r3,r2,r4); LK(r3,r4,r1,r2,r0,31); |
| 403 | S7(r3,r4,r1,r2,r0); K(r0,r1,r2,r3,32); |
| 404 | |
| 405 | d[0] = cpu_to_le32(r0); |
| 406 | d[1] = cpu_to_le32(r1); |
| 407 | d[2] = cpu_to_le32(r2); |
| 408 | d[3] = cpu_to_le32(r3); |
| 409 | } |
Jussi Kivilinna | bc83b82 | 2011-10-18 00:03:08 +0300 | [diff] [blame] | 410 | EXPORT_SYMBOL_GPL(__serpent_encrypt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | |
Jussi Kivilinna | bc83b82 | 2011-10-18 00:03:08 +0300 | [diff] [blame] | 412 | static void serpent_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | { |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 414 | struct serpent_ctx *ctx = crypto_tfm_ctx(tfm); |
Jussi Kivilinna | bc83b82 | 2011-10-18 00:03:08 +0300 | [diff] [blame] | 415 | |
| 416 | __serpent_encrypt(ctx, dst, src); |
| 417 | } |
| 418 | |
| 419 | void __serpent_decrypt(struct serpent_ctx *ctx, u8 *dst, const u8 *src) |
| 420 | { |
| 421 | const u32 *k = ctx->expkey; |
Alexey Dobriyan | d08f74e | 2005-12-23 01:12:25 +0300 | [diff] [blame] | 422 | const __le32 *s = (const __le32 *)src; |
| 423 | __le32 *d = (__le32 *)dst; |
| 424 | u32 r0, r1, r2, r3, r4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
| 426 | r0 = le32_to_cpu(s[0]); |
| 427 | r1 = le32_to_cpu(s[1]); |
| 428 | r2 = le32_to_cpu(s[2]); |
| 429 | r3 = le32_to_cpu(s[3]); |
| 430 | |
| 431 | K(r0,r1,r2,r3,32); |
| 432 | SI7(r0,r1,r2,r3,r4); KL(r1,r3,r0,r4,r2,31); |
| 433 | SI6(r1,r3,r0,r4,r2); KL(r0,r2,r4,r1,r3,30); |
| 434 | SI5(r0,r2,r4,r1,r3); KL(r2,r3,r0,r4,r1,29); |
| 435 | SI4(r2,r3,r0,r4,r1); KL(r2,r0,r1,r4,r3,28); |
| 436 | SI3(r2,r0,r1,r4,r3); KL(r1,r2,r3,r4,r0,27); |
| 437 | SI2(r1,r2,r3,r4,r0); KL(r2,r0,r4,r3,r1,26); |
| 438 | SI1(r2,r0,r4,r3,r1); KL(r1,r0,r4,r3,r2,25); |
| 439 | SI0(r1,r0,r4,r3,r2); KL(r4,r2,r0,r1,r3,24); |
| 440 | SI7(r4,r2,r0,r1,r3); KL(r2,r1,r4,r3,r0,23); |
| 441 | SI6(r2,r1,r4,r3,r0); KL(r4,r0,r3,r2,r1,22); |
| 442 | SI5(r4,r0,r3,r2,r1); KL(r0,r1,r4,r3,r2,21); |
| 443 | SI4(r0,r1,r4,r3,r2); KL(r0,r4,r2,r3,r1,20); |
| 444 | SI3(r0,r4,r2,r3,r1); KL(r2,r0,r1,r3,r4,19); |
| 445 | SI2(r2,r0,r1,r3,r4); KL(r0,r4,r3,r1,r2,18); |
| 446 | SI1(r0,r4,r3,r1,r2); KL(r2,r4,r3,r1,r0,17); |
| 447 | SI0(r2,r4,r3,r1,r0); KL(r3,r0,r4,r2,r1,16); |
| 448 | SI7(r3,r0,r4,r2,r1); KL(r0,r2,r3,r1,r4,15); |
| 449 | SI6(r0,r2,r3,r1,r4); KL(r3,r4,r1,r0,r2,14); |
| 450 | SI5(r3,r4,r1,r0,r2); KL(r4,r2,r3,r1,r0,13); |
| 451 | SI4(r4,r2,r3,r1,r0); KL(r4,r3,r0,r1,r2,12); |
| 452 | SI3(r4,r3,r0,r1,r2); KL(r0,r4,r2,r1,r3,11); |
| 453 | SI2(r0,r4,r2,r1,r3); KL(r4,r3,r1,r2,r0,10); |
| 454 | SI1(r4,r3,r1,r2,r0); KL(r0,r3,r1,r2,r4,9); |
| 455 | SI0(r0,r3,r1,r2,r4); KL(r1,r4,r3,r0,r2,8); |
| 456 | SI7(r1,r4,r3,r0,r2); KL(r4,r0,r1,r2,r3,7); |
| 457 | SI6(r4,r0,r1,r2,r3); KL(r1,r3,r2,r4,r0,6); |
| 458 | SI5(r1,r3,r2,r4,r0); KL(r3,r0,r1,r2,r4,5); |
| 459 | SI4(r3,r0,r1,r2,r4); KL(r3,r1,r4,r2,r0,4); |
| 460 | SI3(r3,r1,r4,r2,r0); KL(r4,r3,r0,r2,r1,3); |
| 461 | SI2(r4,r3,r0,r2,r1); KL(r3,r1,r2,r0,r4,2); |
| 462 | SI1(r3,r1,r2,r0,r4); KL(r4,r1,r2,r0,r3,1); |
| 463 | SI0(r4,r1,r2,r0,r3); K(r2,r3,r1,r4,0); |
| 464 | |
| 465 | d[0] = cpu_to_le32(r2); |
| 466 | d[1] = cpu_to_le32(r3); |
| 467 | d[2] = cpu_to_le32(r1); |
| 468 | d[3] = cpu_to_le32(r4); |
| 469 | } |
Jussi Kivilinna | bc83b82 | 2011-10-18 00:03:08 +0300 | [diff] [blame] | 470 | EXPORT_SYMBOL_GPL(__serpent_decrypt); |
| 471 | |
| 472 | static void serpent_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
| 473 | { |
| 474 | struct serpent_ctx *ctx = crypto_tfm_ctx(tfm); |
| 475 | |
| 476 | __serpent_decrypt(ctx, dst, src); |
| 477 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
| 479 | static struct crypto_alg serpent_alg = { |
| 480 | .cra_name = "serpent", |
Jussi Kivilinna | dd6eec2 | 2011-10-18 00:03:13 +0300 | [diff] [blame^] | 481 | .cra_driver_name = "serpent-generic", |
| 482 | .cra_priority = 100, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, |
| 484 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
| 485 | .cra_ctxsize = sizeof(struct serpent_ctx), |
Atsushi Nemoto | 20ea340 | 2006-03-13 21:30:29 +1100 | [diff] [blame] | 486 | .cra_alignmask = 3, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | .cra_module = THIS_MODULE, |
| 488 | .cra_list = LIST_HEAD_INIT(serpent_alg.cra_list), |
| 489 | .cra_u = { .cipher = { |
| 490 | .cia_min_keysize = SERPENT_MIN_KEY_SIZE, |
| 491 | .cia_max_keysize = SERPENT_MAX_KEY_SIZE, |
| 492 | .cia_setkey = serpent_setkey, |
| 493 | .cia_encrypt = serpent_encrypt, |
| 494 | .cia_decrypt = serpent_decrypt } } |
| 495 | }; |
| 496 | |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 497 | static int tnepres_setkey(struct crypto_tfm *tfm, const u8 *key, |
Herbert Xu | 560c06a | 2006-08-13 14:16:39 +1000 | [diff] [blame] | 498 | unsigned int keylen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | { |
| 500 | u8 rev_key[SERPENT_MAX_KEY_SIZE]; |
| 501 | int i; |
| 502 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | for (i = 0; i < keylen; ++i) |
| 504 | rev_key[keylen - i - 1] = key[i]; |
| 505 | |
Herbert Xu | 560c06a | 2006-08-13 14:16:39 +1000 | [diff] [blame] | 506 | return serpent_setkey(tfm, rev_key, keylen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | } |
| 508 | |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 509 | static void tnepres_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | { |
| 511 | const u32 * const s = (const u32 * const)src; |
| 512 | u32 * const d = (u32 * const)dst; |
| 513 | |
| 514 | u32 rs[4], rd[4]; |
| 515 | |
| 516 | rs[0] = swab32(s[3]); |
| 517 | rs[1] = swab32(s[2]); |
| 518 | rs[2] = swab32(s[1]); |
| 519 | rs[3] = swab32(s[0]); |
| 520 | |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 521 | serpent_encrypt(tfm, (u8 *)rd, (u8 *)rs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | |
| 523 | d[0] = swab32(rd[3]); |
| 524 | d[1] = swab32(rd[2]); |
| 525 | d[2] = swab32(rd[1]); |
| 526 | d[3] = swab32(rd[0]); |
| 527 | } |
| 528 | |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 529 | static void tnepres_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | { |
| 531 | const u32 * const s = (const u32 * const)src; |
| 532 | u32 * const d = (u32 * const)dst; |
| 533 | |
| 534 | u32 rs[4], rd[4]; |
| 535 | |
| 536 | rs[0] = swab32(s[3]); |
| 537 | rs[1] = swab32(s[2]); |
| 538 | rs[2] = swab32(s[1]); |
| 539 | rs[3] = swab32(s[0]); |
| 540 | |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 541 | serpent_decrypt(tfm, (u8 *)rd, (u8 *)rs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | |
| 543 | d[0] = swab32(rd[3]); |
| 544 | d[1] = swab32(rd[2]); |
| 545 | d[2] = swab32(rd[1]); |
| 546 | d[3] = swab32(rd[0]); |
| 547 | } |
| 548 | |
| 549 | static struct crypto_alg tnepres_alg = { |
| 550 | .cra_name = "tnepres", |
| 551 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, |
| 552 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
| 553 | .cra_ctxsize = sizeof(struct serpent_ctx), |
Herbert Xu | a429d26 | 2006-01-07 16:38:15 +1100 | [diff] [blame] | 554 | .cra_alignmask = 3, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | .cra_module = THIS_MODULE, |
| 556 | .cra_list = LIST_HEAD_INIT(serpent_alg.cra_list), |
| 557 | .cra_u = { .cipher = { |
| 558 | .cia_min_keysize = SERPENT_MIN_KEY_SIZE, |
| 559 | .cia_max_keysize = SERPENT_MAX_KEY_SIZE, |
| 560 | .cia_setkey = tnepres_setkey, |
| 561 | .cia_encrypt = tnepres_encrypt, |
| 562 | .cia_decrypt = tnepres_decrypt } } |
| 563 | }; |
| 564 | |
Kamalesh Babulal | 3af5b90 | 2008-04-05 21:00:57 +0800 | [diff] [blame] | 565 | static int __init serpent_mod_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | { |
| 567 | int ret = crypto_register_alg(&serpent_alg); |
| 568 | |
| 569 | if (ret) |
| 570 | return ret; |
| 571 | |
| 572 | ret = crypto_register_alg(&tnepres_alg); |
| 573 | |
| 574 | if (ret) |
| 575 | crypto_unregister_alg(&serpent_alg); |
| 576 | |
| 577 | return ret; |
| 578 | } |
| 579 | |
Kamalesh Babulal | 3af5b90 | 2008-04-05 21:00:57 +0800 | [diff] [blame] | 580 | static void __exit serpent_mod_fini(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | { |
| 582 | crypto_unregister_alg(&tnepres_alg); |
| 583 | crypto_unregister_alg(&serpent_alg); |
| 584 | } |
| 585 | |
Kamalesh Babulal | 3af5b90 | 2008-04-05 21:00:57 +0800 | [diff] [blame] | 586 | module_init(serpent_mod_init); |
| 587 | module_exit(serpent_mod_fini); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | |
| 589 | MODULE_LICENSE("GPL"); |
| 590 | MODULE_DESCRIPTION("Serpent and tnepres (kerneli compatible serpent reversed) Cipher Algorithm"); |
| 591 | MODULE_AUTHOR("Dag Arne Osvik <osvik@ii.uib.no>"); |
| 592 | MODULE_ALIAS("tnepres"); |
Jussi Kivilinna | dd6eec2 | 2011-10-18 00:03:13 +0300 | [diff] [blame^] | 593 | MODULE_ALIAS("serpent"); |