| 1 | /* $NetBSD: cryptosoft_xform.c,v 1.27 2014/11/27 20:30:21 christos Exp $ */ |
| 2 | /* $FreeBSD: src/sys/opencrypto/xform.c,v 1.1.2.1 2002/11/21 23:34:23 sam Exp $ */ |
| 3 | /* $OpenBSD: xform.c,v 1.19 2002/08/16 22:47:25 dhartmei Exp $ */ |
| 4 | |
| 5 | /* |
| 6 | * The authors of this code are John Ioannidis (ji@tla.org), |
| 7 | * Angelos D. Keromytis (kermit@csd.uch.gr) and |
| 8 | * Niels Provos (provos@physnet.uni-hamburg.de). |
| 9 | * |
| 10 | * This code was written by John Ioannidis for BSD/OS in Athens, Greece, |
| 11 | * in November 1995. |
| 12 | * |
| 13 | * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996, |
| 14 | * by Angelos D. Keromytis. |
| 15 | * |
| 16 | * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis |
| 17 | * and Niels Provos. |
| 18 | * |
| 19 | * Additional features in 1999 by Angelos D. Keromytis. |
| 20 | * |
| 21 | * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis, |
| 22 | * Angelos D. Keromytis and Niels Provos. |
| 23 | * |
| 24 | * Copyright (C) 2001, Angelos D. Keromytis. |
| 25 | * |
| 26 | * Permission to use, copy, and modify this software with or without fee |
| 27 | * is hereby granted, provided that this entire notice is included in |
| 28 | * all copies of any software which is or includes a copy or |
| 29 | * modification of this software. |
| 30 | * You may use this code under the GNU public license if you so wish. Please |
| 31 | * contribute changes back to the authors under this freer than GPL license |
| 32 | * so that we may further the use of strong encryption without limitations to |
| 33 | * all. |
| 34 | * |
| 35 | * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR |
| 36 | * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY |
| 37 | * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE |
| 38 | * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR |
| 39 | * PURPOSE. |
| 40 | */ |
| 41 | |
| 42 | #include <sys/cdefs.h> |
| 43 | __KERNEL_RCSID(1, "$NetBSD: cryptosoft_xform.c,v 1.27 2014/11/27 20:30:21 christos Exp $" ); |
| 44 | |
| 45 | #include <crypto/blowfish/blowfish.h> |
| 46 | #include <crypto/cast128/cast128.h> |
| 47 | #include <crypto/des/des.h> |
| 48 | #include <crypto/rijndael/rijndael.h> |
| 49 | #include <crypto/skipjack/skipjack.h> |
| 50 | #include <crypto/camellia/camellia.h> |
| 51 | |
| 52 | #include <opencrypto/deflate.h> |
| 53 | |
| 54 | #include <sys/md5.h> |
| 55 | #include <sys/rmd160.h> |
| 56 | #include <sys/sha1.h> |
| 57 | #include <sys/sha2.h> |
| 58 | #include <sys/cprng.h> |
| 59 | #include <opencrypto/aesxcbcmac.h> |
| 60 | #include <opencrypto/gmac.h> |
| 61 | |
| 62 | struct swcr_auth_hash { |
| 63 | const struct auth_hash *auth_hash; |
| 64 | int ctxsize; |
| 65 | void (*Init)(void *); |
| 66 | void (*Setkey)(void *, const uint8_t *, uint16_t); |
| 67 | void (*Reinit)(void *, const uint8_t *, uint16_t); |
| 68 | int (*Update)(void *, const uint8_t *, uint16_t); |
| 69 | void (*Final)(uint8_t *, void *); |
| 70 | }; |
| 71 | |
| 72 | struct swcr_enc_xform { |
| 73 | const struct enc_xform *enc_xform; |
| 74 | void (*encrypt)(void *, uint8_t *); |
| 75 | void (*decrypt)(void *, uint8_t *); |
| 76 | int (*setkey)(uint8_t **, const uint8_t *, int); |
| 77 | void (*zerokey)(uint8_t **); |
| 78 | void (*reinit)(void *, const uint8_t *, uint8_t *); |
| 79 | }; |
| 80 | |
| 81 | struct swcr_comp_algo { |
| 82 | const struct comp_algo *unused_comp_algo; |
| 83 | uint32_t (*compress)(uint8_t *, uint32_t, uint8_t **); |
| 84 | uint32_t (*decompress)(uint8_t *, uint32_t, uint8_t **, int); |
| 85 | }; |
| 86 | |
| 87 | static void null_encrypt(void *, u_int8_t *); |
| 88 | static void null_decrypt(void *, u_int8_t *); |
| 89 | static int null_setkey(u_int8_t **, const u_int8_t *, int); |
| 90 | static void null_zerokey(u_int8_t **); |
| 91 | |
| 92 | static int des1_setkey(u_int8_t **, const u_int8_t *, int); |
| 93 | static int des3_setkey(u_int8_t **, const u_int8_t *, int); |
| 94 | static int blf_setkey(u_int8_t **, const u_int8_t *, int); |
| 95 | static int cast5_setkey(u_int8_t **, const u_int8_t *, int); |
| 96 | static int skipjack_setkey(u_int8_t **, const u_int8_t *, int); |
| 97 | static int rijndael128_setkey(u_int8_t **, const u_int8_t *, int); |
| 98 | static int cml_setkey(u_int8_t **, const u_int8_t *, int); |
| 99 | static int aes_ctr_setkey(u_int8_t **, const u_int8_t *, int); |
| 100 | static int aes_gmac_setkey(u_int8_t **, const u_int8_t *, int); |
| 101 | static void des1_encrypt(void *, u_int8_t *); |
| 102 | static void des3_encrypt(void *, u_int8_t *); |
| 103 | static void blf_encrypt(void *, u_int8_t *); |
| 104 | static void cast5_encrypt(void *, u_int8_t *); |
| 105 | static void skipjack_encrypt(void *, u_int8_t *); |
| 106 | static void rijndael128_encrypt(void *, u_int8_t *); |
| 107 | static void cml_encrypt(void *, u_int8_t *); |
| 108 | static void des1_decrypt(void *, u_int8_t *); |
| 109 | static void des3_decrypt(void *, u_int8_t *); |
| 110 | static void blf_decrypt(void *, u_int8_t *); |
| 111 | static void cast5_decrypt(void *, u_int8_t *); |
| 112 | static void skipjack_decrypt(void *, u_int8_t *); |
| 113 | static void rijndael128_decrypt(void *, u_int8_t *); |
| 114 | static void cml_decrypt(void *, u_int8_t *); |
| 115 | static void aes_ctr_crypt(void *, u_int8_t *); |
| 116 | static void des1_zerokey(u_int8_t **); |
| 117 | static void des3_zerokey(u_int8_t **); |
| 118 | static void blf_zerokey(u_int8_t **); |
| 119 | static void cast5_zerokey(u_int8_t **); |
| 120 | static void skipjack_zerokey(u_int8_t **); |
| 121 | static void rijndael128_zerokey(u_int8_t **); |
| 122 | static void cml_zerokey(u_int8_t **); |
| 123 | static void aes_ctr_zerokey(u_int8_t **); |
| 124 | static void aes_gmac_zerokey(u_int8_t **); |
| 125 | static void aes_ctr_reinit(void *, const u_int8_t *, u_int8_t *); |
| 126 | static void aes_gcm_reinit(void *, const u_int8_t *, u_int8_t *); |
| 127 | static void aes_gmac_reinit(void *, const u_int8_t *, u_int8_t *); |
| 128 | |
| 129 | static void null_init(void *); |
| 130 | static int null_update(void *, const u_int8_t *, u_int16_t); |
| 131 | static void null_final(u_int8_t *, void *); |
| 132 | |
| 133 | static int MD5Update_int(void *, const u_int8_t *, u_int16_t); |
| 134 | static void SHA1Init_int(void *); |
| 135 | static int SHA1Update_int(void *, const u_int8_t *, u_int16_t); |
| 136 | static void SHA1Final_int(u_int8_t *, void *); |
| 137 | |
| 138 | |
| 139 | static int RMD160Update_int(void *, const u_int8_t *, u_int16_t); |
| 140 | static int SHA1Update_int(void *, const u_int8_t *, u_int16_t); |
| 141 | static void SHA1Final_int(u_int8_t *, void *); |
| 142 | static int RMD160Update_int(void *, const u_int8_t *, u_int16_t); |
| 143 | static int SHA256Update_int(void *, const u_int8_t *, u_int16_t); |
| 144 | static int SHA384Update_int(void *, const u_int8_t *, u_int16_t); |
| 145 | static int SHA512Update_int(void *, const u_int8_t *, u_int16_t); |
| 146 | |
| 147 | static u_int32_t deflate_compress(u_int8_t *, u_int32_t, u_int8_t **); |
| 148 | static u_int32_t deflate_decompress(u_int8_t *, u_int32_t, u_int8_t **, int); |
| 149 | static u_int32_t gzip_compress(u_int8_t *, u_int32_t, u_int8_t **); |
| 150 | static u_int32_t gzip_decompress(u_int8_t *, u_int32_t, u_int8_t **, int); |
| 151 | |
| 152 | /* Encryption instances */ |
| 153 | static const struct swcr_enc_xform swcr_enc_xform_null = { |
| 154 | &enc_xform_null, |
| 155 | null_encrypt, |
| 156 | null_decrypt, |
| 157 | null_setkey, |
| 158 | null_zerokey, |
| 159 | NULL |
| 160 | }; |
| 161 | |
| 162 | static const struct swcr_enc_xform swcr_enc_xform_des = { |
| 163 | &enc_xform_des, |
| 164 | des1_encrypt, |
| 165 | des1_decrypt, |
| 166 | des1_setkey, |
| 167 | des1_zerokey, |
| 168 | NULL |
| 169 | }; |
| 170 | |
| 171 | static const struct swcr_enc_xform swcr_enc_xform_3des = { |
| 172 | &enc_xform_3des, |
| 173 | des3_encrypt, |
| 174 | des3_decrypt, |
| 175 | des3_setkey, |
| 176 | des3_zerokey, |
| 177 | NULL |
| 178 | }; |
| 179 | |
| 180 | static const struct swcr_enc_xform swcr_enc_xform_blf = { |
| 181 | &enc_xform_blf, |
| 182 | blf_encrypt, |
| 183 | blf_decrypt, |
| 184 | blf_setkey, |
| 185 | blf_zerokey, |
| 186 | NULL |
| 187 | }; |
| 188 | |
| 189 | static const struct swcr_enc_xform swcr_enc_xform_cast5 = { |
| 190 | &enc_xform_cast5, |
| 191 | cast5_encrypt, |
| 192 | cast5_decrypt, |
| 193 | cast5_setkey, |
| 194 | cast5_zerokey, |
| 195 | NULL |
| 196 | }; |
| 197 | |
| 198 | static const struct swcr_enc_xform swcr_enc_xform_skipjack = { |
| 199 | &enc_xform_skipjack, |
| 200 | skipjack_encrypt, |
| 201 | skipjack_decrypt, |
| 202 | skipjack_setkey, |
| 203 | skipjack_zerokey, |
| 204 | NULL |
| 205 | }; |
| 206 | |
| 207 | static const struct swcr_enc_xform swcr_enc_xform_rijndael128 = { |
| 208 | &enc_xform_rijndael128, |
| 209 | rijndael128_encrypt, |
| 210 | rijndael128_decrypt, |
| 211 | rijndael128_setkey, |
| 212 | rijndael128_zerokey, |
| 213 | NULL |
| 214 | }; |
| 215 | |
| 216 | static const struct swcr_enc_xform swcr_enc_xform_aes_ctr = { |
| 217 | &enc_xform_aes_ctr, |
| 218 | aes_ctr_crypt, |
| 219 | aes_ctr_crypt, |
| 220 | aes_ctr_setkey, |
| 221 | aes_ctr_zerokey, |
| 222 | aes_ctr_reinit |
| 223 | }; |
| 224 | |
| 225 | static const struct swcr_enc_xform swcr_enc_xform_aes_gcm = { |
| 226 | &enc_xform_aes_gcm, |
| 227 | aes_ctr_crypt, |
| 228 | aes_ctr_crypt, |
| 229 | aes_ctr_setkey, |
| 230 | aes_ctr_zerokey, |
| 231 | aes_gcm_reinit |
| 232 | }; |
| 233 | |
| 234 | static const struct swcr_enc_xform swcr_enc_xform_aes_gmac = { |
| 235 | &enc_xform_aes_gmac, |
| 236 | NULL, |
| 237 | NULL, |
| 238 | aes_gmac_setkey, |
| 239 | aes_gmac_zerokey, |
| 240 | aes_gmac_reinit |
| 241 | }; |
| 242 | |
| 243 | static const struct swcr_enc_xform swcr_enc_xform_camellia = { |
| 244 | &enc_xform_camellia, |
| 245 | cml_encrypt, |
| 246 | cml_decrypt, |
| 247 | cml_setkey, |
| 248 | cml_zerokey, |
| 249 | NULL |
| 250 | }; |
| 251 | |
| 252 | /* Authentication instances */ |
| 253 | static const struct swcr_auth_hash swcr_auth_hash_null = { |
| 254 | &auth_hash_null, sizeof(int), /* NB: context isn't used */ |
| 255 | null_init, NULL, NULL, null_update, null_final |
| 256 | }; |
| 257 | |
| 258 | static const struct swcr_auth_hash swcr_auth_hash_hmac_md5 = { |
| 259 | &auth_hash_hmac_md5, sizeof(MD5_CTX), |
| 260 | (void (*) (void *)) MD5Init, NULL, NULL, MD5Update_int, |
| 261 | (void (*) (u_int8_t *, void *)) MD5Final |
| 262 | }; |
| 263 | |
| 264 | static const struct swcr_auth_hash swcr_auth_hash_hmac_sha1 = { |
| 265 | &auth_hash_hmac_sha1, sizeof(SHA1_CTX), |
| 266 | SHA1Init_int, NULL, NULL, SHA1Update_int, SHA1Final_int |
| 267 | }; |
| 268 | |
| 269 | static const struct swcr_auth_hash swcr_auth_hash_hmac_ripemd_160 = { |
| 270 | &auth_hash_hmac_ripemd_160, sizeof(RMD160_CTX), |
| 271 | (void (*)(void *)) RMD160Init, NULL, NULL, RMD160Update_int, |
| 272 | (void (*)(u_int8_t *, void *)) RMD160Final |
| 273 | }; |
| 274 | static const struct swcr_auth_hash swcr_auth_hash_hmac_md5_96 = { |
| 275 | &auth_hash_hmac_md5_96, sizeof(MD5_CTX), |
| 276 | (void (*) (void *)) MD5Init, NULL, NULL, MD5Update_int, |
| 277 | (void (*) (u_int8_t *, void *)) MD5Final |
| 278 | }; |
| 279 | |
| 280 | static const struct swcr_auth_hash swcr_auth_hash_hmac_sha1_96 = { |
| 281 | &auth_hash_hmac_sha1_96, sizeof(SHA1_CTX), |
| 282 | SHA1Init_int, NULL, NULL, SHA1Update_int, SHA1Final_int |
| 283 | }; |
| 284 | |
| 285 | static const struct swcr_auth_hash swcr_auth_hash_hmac_ripemd_160_96 = { |
| 286 | &auth_hash_hmac_ripemd_160_96, sizeof(RMD160_CTX), |
| 287 | (void (*)(void *)) RMD160Init, NULL, NULL, RMD160Update_int, |
| 288 | (void (*)(u_int8_t *, void *)) RMD160Final |
| 289 | }; |
| 290 | |
| 291 | static const struct swcr_auth_hash swcr_auth_hash_key_md5 = { |
| 292 | &auth_hash_key_md5, sizeof(MD5_CTX), |
| 293 | (void (*)(void *)) MD5Init, NULL, NULL, MD5Update_int, |
| 294 | (void (*)(u_int8_t *, void *)) MD5Final |
| 295 | }; |
| 296 | |
| 297 | static const struct swcr_auth_hash swcr_auth_hash_key_sha1 = { |
| 298 | &auth_hash_key_sha1, sizeof(SHA1_CTX), |
| 299 | SHA1Init_int, NULL, NULL, SHA1Update_int, SHA1Final_int |
| 300 | }; |
| 301 | |
| 302 | static const struct swcr_auth_hash swcr_auth_hash_md5 = { |
| 303 | &auth_hash_md5, sizeof(MD5_CTX), |
| 304 | (void (*) (void *)) MD5Init, NULL, NULL, MD5Update_int, |
| 305 | (void (*) (u_int8_t *, void *)) MD5Final |
| 306 | }; |
| 307 | |
| 308 | static const struct swcr_auth_hash swcr_auth_hash_sha1 = { |
| 309 | &auth_hash_sha1, sizeof(SHA1_CTX), |
| 310 | (void (*)(void *)) SHA1Init, NULL, NULL, SHA1Update_int, |
| 311 | (void (*)(u_int8_t *, void *)) SHA1Final |
| 312 | }; |
| 313 | |
| 314 | static const struct swcr_auth_hash swcr_auth_hash_hmac_sha2_256 = { |
| 315 | &auth_hash_hmac_sha2_256, sizeof(SHA256_CTX), |
| 316 | (void (*)(void *)) SHA256_Init, NULL, NULL, SHA256Update_int, |
| 317 | (void (*)(u_int8_t *, void *)) SHA256_Final |
| 318 | }; |
| 319 | |
| 320 | static const struct swcr_auth_hash swcr_auth_hash_hmac_sha2_384 = { |
| 321 | &auth_hash_hmac_sha2_384, sizeof(SHA384_CTX), |
| 322 | (void (*)(void *)) SHA384_Init, NULL, NULL, SHA384Update_int, |
| 323 | (void (*)(u_int8_t *, void *)) SHA384_Final |
| 324 | }; |
| 325 | |
| 326 | static const struct swcr_auth_hash swcr_auth_hash_hmac_sha2_512 = { |
| 327 | &auth_hash_hmac_sha2_512, sizeof(SHA512_CTX), |
| 328 | (void (*)(void *)) SHA512_Init, NULL, NULL, SHA512Update_int, |
| 329 | (void (*)(u_int8_t *, void *)) SHA512_Final |
| 330 | }; |
| 331 | |
| 332 | static const struct swcr_auth_hash swcr_auth_hash_aes_xcbc_mac = { |
| 333 | &auth_hash_aes_xcbc_mac_96, sizeof(aesxcbc_ctx), |
| 334 | null_init, |
| 335 | (void (*)(void *, const u_int8_t *, u_int16_t))aes_xcbc_mac_init, |
| 336 | NULL, aes_xcbc_mac_loop, aes_xcbc_mac_result |
| 337 | }; |
| 338 | |
| 339 | static const struct swcr_auth_hash swcr_auth_hash_gmac_aes_128 = { |
| 340 | &auth_hash_gmac_aes_128, sizeof(AES_GMAC_CTX), |
| 341 | (void (*)(void *))AES_GMAC_Init, |
| 342 | (void (*)(void *, const u_int8_t *, u_int16_t))AES_GMAC_Setkey, |
| 343 | (void (*)(void *, const u_int8_t *, u_int16_t))AES_GMAC_Reinit, |
| 344 | (int (*)(void *, const u_int8_t *, u_int16_t))AES_GMAC_Update, |
| 345 | (void (*)(u_int8_t *, void *))AES_GMAC_Final |
| 346 | }; |
| 347 | |
| 348 | static const struct swcr_auth_hash swcr_auth_hash_gmac_aes_192 = { |
| 349 | &auth_hash_gmac_aes_192, sizeof(AES_GMAC_CTX), |
| 350 | (void (*)(void *))AES_GMAC_Init, |
| 351 | (void (*)(void *, const u_int8_t *, u_int16_t))AES_GMAC_Setkey, |
| 352 | (void (*)(void *, const u_int8_t *, u_int16_t))AES_GMAC_Reinit, |
| 353 | (int (*)(void *, const u_int8_t *, u_int16_t))AES_GMAC_Update, |
| 354 | (void (*)(u_int8_t *, void *))AES_GMAC_Final |
| 355 | }; |
| 356 | |
| 357 | static const struct swcr_auth_hash swcr_auth_hash_gmac_aes_256 = { |
| 358 | &auth_hash_gmac_aes_256, sizeof(AES_GMAC_CTX), |
| 359 | (void (*)(void *))AES_GMAC_Init, |
| 360 | (void (*)(void *, const u_int8_t *, u_int16_t))AES_GMAC_Setkey, |
| 361 | (void (*)(void *, const u_int8_t *, u_int16_t))AES_GMAC_Reinit, |
| 362 | (int (*)(void *, const u_int8_t *, u_int16_t))AES_GMAC_Update, |
| 363 | (void (*)(u_int8_t *, void *))AES_GMAC_Final |
| 364 | }; |
| 365 | |
| 366 | /* Compression instance */ |
| 367 | static const struct swcr_comp_algo swcr_comp_algo_deflate = { |
| 368 | &comp_algo_deflate, |
| 369 | deflate_compress, |
| 370 | deflate_decompress |
| 371 | }; |
| 372 | |
| 373 | static const struct swcr_comp_algo swcr_comp_algo_deflate_nogrow = { |
| 374 | &comp_algo_deflate_nogrow, |
| 375 | deflate_compress, |
| 376 | deflate_decompress |
| 377 | }; |
| 378 | |
| 379 | static const struct swcr_comp_algo swcr_comp_algo_gzip = { |
| 380 | &comp_algo_deflate, |
| 381 | gzip_compress, |
| 382 | gzip_decompress |
| 383 | }; |
| 384 | |
| 385 | /* |
| 386 | * Encryption wrapper routines. |
| 387 | */ |
| 388 | static void |
| 389 | null_encrypt(void *key, u_int8_t *blk) |
| 390 | { |
| 391 | } |
| 392 | static void |
| 393 | null_decrypt(void *key, u_int8_t *blk) |
| 394 | { |
| 395 | } |
| 396 | static int |
| 397 | null_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 398 | { |
| 399 | *sched = NULL; |
| 400 | return 0; |
| 401 | } |
| 402 | static void |
| 403 | null_zerokey(u_int8_t **sched) |
| 404 | { |
| 405 | *sched = NULL; |
| 406 | } |
| 407 | |
| 408 | static void |
| 409 | des1_encrypt(void *key, u_int8_t *blk) |
| 410 | { |
| 411 | des_cblock *cb = (des_cblock *) blk; |
| 412 | des_key_schedule *p = (des_key_schedule *) key; |
| 413 | |
| 414 | des_ecb_encrypt(cb, cb, p[0], DES_ENCRYPT); |
| 415 | } |
| 416 | |
| 417 | static void |
| 418 | des1_decrypt(void *key, u_int8_t *blk) |
| 419 | { |
| 420 | des_cblock *cb = (des_cblock *) blk; |
| 421 | des_key_schedule *p = (des_key_schedule *) key; |
| 422 | |
| 423 | des_ecb_encrypt(cb, cb, p[0], DES_DECRYPT); |
| 424 | } |
| 425 | |
| 426 | static int |
| 427 | des1_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 428 | { |
| 429 | des_key_schedule *p; |
| 430 | |
| 431 | p = malloc(sizeof (des_key_schedule), |
| 432 | M_CRYPTO_DATA, M_NOWAIT|M_ZERO); |
| 433 | *sched = (u_int8_t *) p; |
| 434 | if (p == NULL) |
| 435 | return ENOMEM; |
| 436 | des_set_key((des_cblock *)__UNCONST(key), p[0]); |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | static void |
| 441 | des1_zerokey(u_int8_t **sched) |
| 442 | { |
| 443 | memset(*sched, 0, sizeof (des_key_schedule)); |
| 444 | free(*sched, M_CRYPTO_DATA); |
| 445 | *sched = NULL; |
| 446 | } |
| 447 | |
| 448 | static void |
| 449 | des3_encrypt(void *key, u_int8_t *blk) |
| 450 | { |
| 451 | des_cblock *cb = (des_cblock *) blk; |
| 452 | des_key_schedule *p = (des_key_schedule *) key; |
| 453 | |
| 454 | des_ecb3_encrypt(cb, cb, p[0], p[1], p[2], DES_ENCRYPT); |
| 455 | } |
| 456 | |
| 457 | static void |
| 458 | des3_decrypt(void *key, u_int8_t *blk) |
| 459 | { |
| 460 | des_cblock *cb = (des_cblock *) blk; |
| 461 | des_key_schedule *p = (des_key_schedule *) key; |
| 462 | |
| 463 | des_ecb3_encrypt(cb, cb, p[0], p[1], p[2], DES_DECRYPT); |
| 464 | } |
| 465 | |
| 466 | static int |
| 467 | des3_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 468 | { |
| 469 | des_key_schedule *p; |
| 470 | |
| 471 | p = malloc(3*sizeof (des_key_schedule), |
| 472 | M_CRYPTO_DATA, M_NOWAIT|M_ZERO); |
| 473 | *sched = (u_int8_t *) p; |
| 474 | if (p == NULL) |
| 475 | return ENOMEM; |
| 476 | des_set_key((des_cblock *)__UNCONST(key + 0), p[0]); |
| 477 | des_set_key((des_cblock *)__UNCONST(key + 8), p[1]); |
| 478 | des_set_key((des_cblock *)__UNCONST(key + 16), p[2]); |
| 479 | return 0; |
| 480 | } |
| 481 | |
| 482 | static void |
| 483 | des3_zerokey(u_int8_t **sched) |
| 484 | { |
| 485 | memset(*sched, 0, 3*sizeof (des_key_schedule)); |
| 486 | free(*sched, M_CRYPTO_DATA); |
| 487 | *sched = NULL; |
| 488 | } |
| 489 | |
| 490 | static void |
| 491 | blf_encrypt(void *key, u_int8_t *blk) |
| 492 | { |
| 493 | |
| 494 | BF_ecb_encrypt(blk, blk, (BF_KEY *)key, 1); |
| 495 | } |
| 496 | |
| 497 | static void |
| 498 | blf_decrypt(void *key, u_int8_t *blk) |
| 499 | { |
| 500 | |
| 501 | BF_ecb_encrypt(blk, blk, (BF_KEY *)key, 0); |
| 502 | } |
| 503 | |
| 504 | static int |
| 505 | blf_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 506 | { |
| 507 | |
| 508 | *sched = malloc(sizeof(BF_KEY), |
| 509 | M_CRYPTO_DATA, M_NOWAIT|M_ZERO); |
| 510 | if (*sched == NULL) |
| 511 | return ENOMEM; |
| 512 | BF_set_key((BF_KEY *) *sched, len, key); |
| 513 | return 0; |
| 514 | } |
| 515 | |
| 516 | static void |
| 517 | blf_zerokey(u_int8_t **sched) |
| 518 | { |
| 519 | memset(*sched, 0, sizeof(BF_KEY)); |
| 520 | free(*sched, M_CRYPTO_DATA); |
| 521 | *sched = NULL; |
| 522 | } |
| 523 | |
| 524 | static void |
| 525 | cast5_encrypt(void *key, u_int8_t *blk) |
| 526 | { |
| 527 | cast128_encrypt((cast128_key *) key, blk, blk); |
| 528 | } |
| 529 | |
| 530 | static void |
| 531 | cast5_decrypt(void *key, u_int8_t *blk) |
| 532 | { |
| 533 | cast128_decrypt((cast128_key *) key, blk, blk); |
| 534 | } |
| 535 | |
| 536 | static int |
| 537 | cast5_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 538 | { |
| 539 | |
| 540 | *sched = malloc(sizeof(cast128_key), M_CRYPTO_DATA, |
| 541 | M_NOWAIT|M_ZERO); |
| 542 | if (*sched == NULL) |
| 543 | return ENOMEM; |
| 544 | cast128_setkey((cast128_key *)*sched, key, len); |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | static void |
| 549 | cast5_zerokey(u_int8_t **sched) |
| 550 | { |
| 551 | memset(*sched, 0, sizeof(cast128_key)); |
| 552 | free(*sched, M_CRYPTO_DATA); |
| 553 | *sched = NULL; |
| 554 | } |
| 555 | |
| 556 | static void |
| 557 | skipjack_encrypt(void *key, u_int8_t *blk) |
| 558 | { |
| 559 | skipjack_forwards(blk, blk, (u_int8_t **) key); |
| 560 | } |
| 561 | |
| 562 | static void |
| 563 | skipjack_decrypt(void *key, u_int8_t *blk) |
| 564 | { |
| 565 | skipjack_backwards(blk, blk, (u_int8_t **) key); |
| 566 | } |
| 567 | |
| 568 | static int |
| 569 | skipjack_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 570 | { |
| 571 | |
| 572 | /* NB: allocate all the memory that's needed at once */ |
| 573 | /* XXX assumes bytes are aligned on sizeof(u_char) == 1 boundaries. |
| 574 | * Will this break a pdp-10, Cray-1, or GE-645 port? |
| 575 | */ |
| 576 | *sched = malloc(10 * (sizeof(u_int8_t *) + 0x100), |
| 577 | M_CRYPTO_DATA, M_NOWAIT|M_ZERO); |
| 578 | |
| 579 | if (*sched == NULL) |
| 580 | return ENOMEM; |
| 581 | |
| 582 | u_int8_t** key_tables = (u_int8_t**) *sched; |
| 583 | u_int8_t* table = (u_int8_t*) &key_tables[10]; |
| 584 | int k; |
| 585 | |
| 586 | for (k = 0; k < 10; k++) { |
| 587 | key_tables[k] = table; |
| 588 | table += 0x100; |
| 589 | } |
| 590 | subkey_table_gen(key, (u_int8_t **) *sched); |
| 591 | return 0; |
| 592 | } |
| 593 | |
| 594 | static void |
| 595 | skipjack_zerokey(u_int8_t **sched) |
| 596 | { |
| 597 | memset(*sched, 0, 10 * (sizeof(u_int8_t *) + 0x100)); |
| 598 | free(*sched, M_CRYPTO_DATA); |
| 599 | *sched = NULL; |
| 600 | } |
| 601 | |
| 602 | static void |
| 603 | rijndael128_encrypt(void *key, u_int8_t *blk) |
| 604 | { |
| 605 | rijndael_encrypt((rijndael_ctx *) key, (u_char *) blk, (u_char *) blk); |
| 606 | } |
| 607 | |
| 608 | static void |
| 609 | rijndael128_decrypt(void *key, u_int8_t *blk) |
| 610 | { |
| 611 | rijndael_decrypt((rijndael_ctx *) key, (u_char *) blk, |
| 612 | (u_char *) blk); |
| 613 | } |
| 614 | |
| 615 | static int |
| 616 | rijndael128_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 617 | { |
| 618 | |
| 619 | if (len != 16 && len != 24 && len != 32) |
| 620 | return EINVAL; |
| 621 | *sched = malloc(sizeof(rijndael_ctx), M_CRYPTO_DATA, |
| 622 | M_NOWAIT|M_ZERO); |
| 623 | if (*sched == NULL) |
| 624 | return ENOMEM; |
| 625 | rijndael_set_key((rijndael_ctx *) *sched, key, len * 8); |
| 626 | return 0; |
| 627 | } |
| 628 | |
| 629 | static void |
| 630 | rijndael128_zerokey(u_int8_t **sched) |
| 631 | { |
| 632 | memset(*sched, 0, sizeof(rijndael_ctx)); |
| 633 | free(*sched, M_CRYPTO_DATA); |
| 634 | *sched = NULL; |
| 635 | } |
| 636 | |
| 637 | static void |
| 638 | cml_encrypt(void *key, u_int8_t *blk) |
| 639 | { |
| 640 | |
| 641 | camellia_encrypt(key, blk, blk); |
| 642 | } |
| 643 | |
| 644 | static void |
| 645 | cml_decrypt(void *key, u_int8_t *blk) |
| 646 | { |
| 647 | |
| 648 | camellia_decrypt(key, blk, blk); |
| 649 | } |
| 650 | |
| 651 | static int |
| 652 | cml_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 653 | { |
| 654 | |
| 655 | if (len != 16 && len != 24 && len != 32) |
| 656 | return (EINVAL); |
| 657 | *sched = malloc(sizeof(camellia_ctx), M_CRYPTO_DATA, |
| 658 | M_NOWAIT|M_ZERO); |
| 659 | if (*sched == NULL) |
| 660 | return ENOMEM; |
| 661 | |
| 662 | camellia_set_key((camellia_ctx *) *sched, key, len * 8); |
| 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | static void |
| 667 | cml_zerokey(u_int8_t **sched) |
| 668 | { |
| 669 | |
| 670 | memset(*sched, 0, sizeof(camellia_ctx)); |
| 671 | free(*sched, M_CRYPTO_DATA); |
| 672 | *sched = NULL; |
| 673 | } |
| 674 | |
| 675 | #define AESCTR_NONCESIZE 4 |
| 676 | #define AESCTR_IVSIZE 8 |
| 677 | #define AESCTR_BLOCKSIZE 16 |
| 678 | |
| 679 | struct aes_ctr_ctx { |
| 680 | /* need only encryption half */ |
| 681 | u_int32_t ac_ek[4*(RIJNDAEL_MAXNR + 1)]; |
| 682 | u_int8_t ac_block[AESCTR_BLOCKSIZE]; |
| 683 | int ac_nr; |
| 684 | struct { |
| 685 | u_int64_t lastiv; |
| 686 | } ivgenctx; |
| 687 | }; |
| 688 | |
| 689 | static void |
| 690 | aes_ctr_crypt(void *key, u_int8_t *blk) |
| 691 | { |
| 692 | struct aes_ctr_ctx *ctx; |
| 693 | u_int8_t keystream[AESCTR_BLOCKSIZE]; |
| 694 | int i; |
| 695 | |
| 696 | ctx = key; |
| 697 | /* increment counter */ |
| 698 | for (i = AESCTR_BLOCKSIZE - 1; |
| 699 | i >= AESCTR_NONCESIZE + AESCTR_IVSIZE; i--) |
| 700 | if (++ctx->ac_block[i]) /* continue on overflow */ |
| 701 | break; |
| 702 | rijndaelEncrypt(ctx->ac_ek, ctx->ac_nr, ctx->ac_block, keystream); |
| 703 | for (i = 0; i < AESCTR_BLOCKSIZE; i++) |
| 704 | blk[i] ^= keystream[i]; |
| 705 | memset(keystream, 0, sizeof(keystream)); |
| 706 | } |
| 707 | |
| 708 | int |
| 709 | aes_ctr_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 710 | { |
| 711 | struct aes_ctr_ctx *ctx; |
| 712 | |
| 713 | if (len < AESCTR_NONCESIZE) |
| 714 | return EINVAL; |
| 715 | |
| 716 | ctx = malloc(sizeof(struct aes_ctr_ctx), M_CRYPTO_DATA, |
| 717 | M_NOWAIT|M_ZERO); |
| 718 | if (!ctx) |
| 719 | return ENOMEM; |
| 720 | ctx->ac_nr = rijndaelKeySetupEnc(ctx->ac_ek, (const u_char *)key, |
| 721 | (len - AESCTR_NONCESIZE) * 8); |
| 722 | if (!ctx->ac_nr) { /* wrong key len */ |
| 723 | aes_ctr_zerokey((u_int8_t **)&ctx); |
| 724 | return EINVAL; |
| 725 | } |
| 726 | memcpy(ctx->ac_block, key + len - AESCTR_NONCESIZE, AESCTR_NONCESIZE); |
| 727 | /* random start value for simple counter */ |
| 728 | cprng_fast(&ctx->ivgenctx.lastiv, sizeof(ctx->ivgenctx.lastiv)); |
| 729 | *sched = (void *)ctx; |
| 730 | return 0; |
| 731 | } |
| 732 | |
| 733 | void |
| 734 | aes_ctr_zerokey(u_int8_t **sched) |
| 735 | { |
| 736 | |
| 737 | memset(*sched, 0, sizeof(struct aes_ctr_ctx)); |
| 738 | free(*sched, M_CRYPTO_DATA); |
| 739 | *sched = NULL; |
| 740 | } |
| 741 | |
| 742 | void |
| 743 | aes_ctr_reinit(void *key, const u_int8_t *iv, u_int8_t *ivout) |
| 744 | { |
| 745 | struct aes_ctr_ctx *ctx = key; |
| 746 | |
| 747 | if (!iv) { |
| 748 | ctx->ivgenctx.lastiv++; |
| 749 | iv = (const u_int8_t *)&ctx->ivgenctx.lastiv; |
| 750 | } |
| 751 | if (ivout) |
| 752 | memcpy(ivout, iv, AESCTR_IVSIZE); |
| 753 | memcpy(ctx->ac_block + AESCTR_NONCESIZE, iv, AESCTR_IVSIZE); |
| 754 | /* reset counter */ |
| 755 | memset(ctx->ac_block + AESCTR_NONCESIZE + AESCTR_IVSIZE, 0, 4); |
| 756 | } |
| 757 | |
| 758 | void |
| 759 | aes_gcm_reinit(void *key, const u_int8_t *iv, u_int8_t *ivout) |
| 760 | { |
| 761 | struct aes_ctr_ctx *ctx = key; |
| 762 | |
| 763 | if (!iv) { |
| 764 | ctx->ivgenctx.lastiv++; |
| 765 | iv = (const u_int8_t *)&ctx->ivgenctx.lastiv; |
| 766 | } |
| 767 | if (ivout) |
| 768 | memcpy(ivout, iv, AESCTR_IVSIZE); |
| 769 | memcpy(ctx->ac_block + AESCTR_NONCESIZE, iv, AESCTR_IVSIZE); |
| 770 | /* reset counter */ |
| 771 | memset(ctx->ac_block + AESCTR_NONCESIZE + AESCTR_IVSIZE, 0, 4); |
| 772 | ctx->ac_block[AESCTR_BLOCKSIZE - 1] = 1; /* GCM starts with 1 */ |
| 773 | } |
| 774 | |
| 775 | struct aes_gmac_ctx { |
| 776 | struct { |
| 777 | u_int64_t lastiv; |
| 778 | } ivgenctx; |
| 779 | }; |
| 780 | |
| 781 | int |
| 782 | aes_gmac_setkey(u_int8_t **sched, const u_int8_t *key, int len) |
| 783 | { |
| 784 | struct aes_gmac_ctx *ctx; |
| 785 | |
| 786 | ctx = malloc(sizeof(struct aes_gmac_ctx), M_CRYPTO_DATA, |
| 787 | M_NOWAIT|M_ZERO); |
| 788 | if (!ctx) |
| 789 | return ENOMEM; |
| 790 | |
| 791 | /* random start value for simple counter */ |
| 792 | cprng_fast(&ctx->ivgenctx.lastiv, sizeof(ctx->ivgenctx.lastiv)); |
| 793 | *sched = (void *)ctx; |
| 794 | return 0; |
| 795 | } |
| 796 | |
| 797 | void |
| 798 | aes_gmac_zerokey(u_int8_t **sched) |
| 799 | { |
| 800 | |
| 801 | free(*sched, M_CRYPTO_DATA); |
| 802 | *sched = NULL; |
| 803 | } |
| 804 | |
| 805 | void |
| 806 | aes_gmac_reinit(void *key, const u_int8_t *iv, u_int8_t *ivout) |
| 807 | { |
| 808 | struct aes_gmac_ctx *ctx = key; |
| 809 | |
| 810 | if (!iv) { |
| 811 | ctx->ivgenctx.lastiv++; |
| 812 | iv = (const u_int8_t *)&ctx->ivgenctx.lastiv; |
| 813 | } |
| 814 | if (ivout) |
| 815 | memcpy(ivout, iv, AESCTR_IVSIZE); |
| 816 | } |
| 817 | |
| 818 | /* |
| 819 | * And now for auth. |
| 820 | */ |
| 821 | |
| 822 | static void |
| 823 | null_init(void *ctx) |
| 824 | { |
| 825 | } |
| 826 | |
| 827 | static int |
| 828 | null_update(void *ctx, const u_int8_t *buf, |
| 829 | u_int16_t len) |
| 830 | { |
| 831 | return 0; |
| 832 | } |
| 833 | |
| 834 | static void |
| 835 | null_final(u_int8_t *buf, void *ctx) |
| 836 | { |
| 837 | if (buf != (u_int8_t *) 0) |
| 838 | memset(buf, 0, 12); |
| 839 | } |
| 840 | |
| 841 | static int |
| 842 | RMD160Update_int(void *ctx, const u_int8_t *buf, u_int16_t len) |
| 843 | { |
| 844 | RMD160Update(ctx, buf, len); |
| 845 | return 0; |
| 846 | } |
| 847 | |
| 848 | static int |
| 849 | MD5Update_int(void *ctx, const u_int8_t *buf, u_int16_t len) |
| 850 | { |
| 851 | MD5Update(ctx, buf, len); |
| 852 | return 0; |
| 853 | } |
| 854 | |
| 855 | static void |
| 856 | SHA1Init_int(void *ctx) |
| 857 | { |
| 858 | SHA1Init(ctx); |
| 859 | } |
| 860 | |
| 861 | static int |
| 862 | SHA1Update_int(void *ctx, const u_int8_t *buf, u_int16_t len) |
| 863 | { |
| 864 | SHA1Update(ctx, buf, len); |
| 865 | return 0; |
| 866 | } |
| 867 | |
| 868 | static void |
| 869 | SHA1Final_int(u_int8_t *blk, void *ctx) |
| 870 | { |
| 871 | SHA1Final(blk, ctx); |
| 872 | } |
| 873 | |
| 874 | static int |
| 875 | SHA256Update_int(void *ctx, const u_int8_t *buf, u_int16_t len) |
| 876 | { |
| 877 | SHA256_Update(ctx, buf, len); |
| 878 | return 0; |
| 879 | } |
| 880 | |
| 881 | static int |
| 882 | SHA384Update_int(void *ctx, const u_int8_t *buf, u_int16_t len) |
| 883 | { |
| 884 | SHA384_Update(ctx, buf, len); |
| 885 | return 0; |
| 886 | } |
| 887 | |
| 888 | static int |
| 889 | SHA512Update_int(void *ctx, const u_int8_t *buf, u_int16_t len) |
| 890 | { |
| 891 | SHA512_Update(ctx, buf, len); |
| 892 | return 0; |
| 893 | } |
| 894 | |
| 895 | /* |
| 896 | * And compression |
| 897 | */ |
| 898 | |
| 899 | static u_int32_t |
| 900 | deflate_compress(u_int8_t *data, u_int32_t size, u_int8_t **out) |
| 901 | { |
| 902 | return deflate_global(data, size, 0, out, 0); |
| 903 | } |
| 904 | |
| 905 | static u_int32_t |
| 906 | deflate_decompress(u_int8_t *data, u_int32_t size, u_int8_t **out, |
| 907 | int size_hint) |
| 908 | { |
| 909 | return deflate_global(data, size, 1, out, size_hint); |
| 910 | } |
| 911 | |
| 912 | static u_int32_t |
| 913 | gzip_compress(u_int8_t *data, u_int32_t size, u_int8_t **out) |
| 914 | { |
| 915 | return gzip_global(data, size, 0, out, 0); |
| 916 | } |
| 917 | |
| 918 | static u_int32_t |
| 919 | gzip_decompress(u_int8_t *data, u_int32_t size, u_int8_t **out, |
| 920 | int size_hint) |
| 921 | { |
| 922 | return gzip_global(data, size, 1, out, size_hint); |
| 923 | } |
| 924 | |