1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * 25 * Copyright 2014 Nexenta Systems, Inc. All rights reserved. 26 */ 27 28 #ifndef _COMMON_CRYPTO_MODES_H 29 #define _COMMON_CRYPTO_MODES_H 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #include <sys/strsun.h> 36 #include <sys/systm.h> 37 #include <sys/sysmacros.h> 38 #include <sys/types.h> 39 #include <sys/errno.h> 40 #include <sys/rwlock.h> 41 #include <sys/kmem.h> 42 #include <sys/crypto/common.h> 43 #include <sys/crypto/impl.h> 44 45 #define ECB_MODE 0x00000002 46 #define CBC_MODE 0x00000004 47 #define CTR_MODE 0x00000008 48 #define CCM_MODE 0x00000010 49 #define GCM_MODE 0x00000020 50 #define GMAC_MODE 0x00000040 51 #define CMAC_MODE 0x00000080 52 53 /* 54 * cc_keysched: Pointer to key schedule. 55 * 56 * cc_keysched_len: Length of the key schedule. 57 * 58 * cc_remainder: This is for residual data, i.e. data that can't 59 * be processed because there are too few bytes. 60 * Must wait until more data arrives. 61 * 62 * cc_remainder_len: Number of bytes in cc_remainder. 63 * 64 * cc_iv: Scratch buffer that sometimes contains the IV. 65 * 66 * cc_lastp: Pointer to previous block of ciphertext. 67 * 68 * cc_copy_to: Pointer to where encrypted residual data needs 69 * to be copied. 70 * 71 * cc_flags: PROVIDER_OWNS_KEY_SCHEDULE 72 * When a context is freed, it is necessary 73 * to know whether the key schedule was allocated 74 * by the caller, or internally, e.g. an init routine. 75 * If allocated by the latter, then it needs to be freed. 76 * 77 * ECB_MODE, CBC_MODE, CTR_MODE, or CCM_MODE 78 */ 79 struct common_ctx { 80 void *cc_keysched; 81 size_t cc_keysched_len; 82 uint64_t cc_iv[2]; 83 uint64_t cc_remainder[2]; 84 size_t cc_remainder_len; 85 uint8_t *cc_lastp; 86 uint8_t *cc_copy_to; 87 uint32_t cc_flags; 88 }; 89 90 typedef struct common_ctx common_ctx_t; 91 92 typedef struct ecb_ctx { 93 struct common_ctx ecb_common; 94 uint64_t ecb_lastblock[2]; 95 } ecb_ctx_t; 96 97 #define ecb_keysched ecb_common.cc_keysched 98 #define ecb_keysched_len ecb_common.cc_keysched_len 99 #define ecb_iv ecb_common.cc_iv 100 #define ecb_remainder ecb_common.cc_remainder 101 #define ecb_remainder_len ecb_common.cc_remainder_len 102 #define ecb_lastp ecb_common.cc_lastp 103 #define ecb_copy_to ecb_common.cc_copy_to 104 #define ecb_flags ecb_common.cc_flags 105 106 /* 107 * max_remain max bytes in cbc_remainder 108 */ 109 typedef struct cbc_ctx { 110 struct common_ctx cbc_common; 111 uint64_t cbc_lastblock[2]; 112 size_t max_remain; 113 } cbc_ctx_t; 114 115 #define cbc_keysched cbc_common.cc_keysched 116 #define cbc_keysched_len cbc_common.cc_keysched_len 117 #define cbc_iv cbc_common.cc_iv 118 #define cbc_remainder cbc_common.cc_remainder 119 #define cbc_remainder_len cbc_common.cc_remainder_len 120 #define cbc_lastp cbc_common.cc_lastp 121 #define cbc_copy_to cbc_common.cc_copy_to 122 #define cbc_flags cbc_common.cc_flags 123 124 /* 125 * ctr_lower_mask Bit-mask for lower 8 bytes of counter block. 126 * ctr_upper_mask Bit-mask for upper 8 bytes of counter block. 127 */ 128 typedef struct ctr_ctx { 129 struct common_ctx ctr_common; 130 uint64_t ctr_lower_mask; 131 uint64_t ctr_upper_mask; 132 uint32_t ctr_tmp[4]; 133 } ctr_ctx_t; 134 135 /* 136 * ctr_cb Counter block. 137 */ 138 #define ctr_keysched ctr_common.cc_keysched 139 #define ctr_keysched_len ctr_common.cc_keysched_len 140 #define ctr_cb ctr_common.cc_iv 141 #define ctr_remainder ctr_common.cc_remainder 142 #define ctr_remainder_len ctr_common.cc_remainder_len 143 #define ctr_lastp ctr_common.cc_lastp 144 #define ctr_copy_to ctr_common.cc_copy_to 145 #define ctr_flags ctr_common.cc_flags 146 147 /* 148 * 149 * ccm_mac_len: Stores length of the MAC in CCM mode. 150 * ccm_mac_buf: Stores the intermediate value for MAC in CCM encrypt. 151 * In CCM decrypt, stores the input MAC value. 152 * ccm_data_len: Length of the plaintext for CCM mode encrypt, or 153 * length of the ciphertext for CCM mode decrypt. 154 * ccm_processed_data_len: 155 * Length of processed plaintext in CCM mode encrypt, 156 * or length of processed ciphertext for CCM mode decrypt. 157 * ccm_processed_mac_len: 158 * Length of MAC data accumulated in CCM mode decrypt. 159 * 160 * ccm_pt_buf: Only used in CCM mode decrypt. It stores the 161 * decrypted plaintext to be returned when 162 * MAC verification succeeds in decrypt_final. 163 * Memory for this should be allocated in the AES module. 164 * 165 */ 166 typedef struct ccm_ctx { 167 struct common_ctx ccm_common; 168 uint32_t ccm_tmp[4]; 169 size_t ccm_mac_len; 170 uint64_t ccm_mac_buf[2]; 171 size_t ccm_data_len; 172 size_t ccm_processed_data_len; 173 size_t ccm_processed_mac_len; 174 uint8_t *ccm_pt_buf; 175 uint64_t ccm_mac_input_buf[2]; 176 uint64_t ccm_counter_mask; 177 } ccm_ctx_t; 178 179 #define ccm_keysched ccm_common.cc_keysched 180 #define ccm_keysched_len ccm_common.cc_keysched_len 181 #define ccm_cb ccm_common.cc_iv 182 #define ccm_remainder ccm_common.cc_remainder 183 #define ccm_remainder_len ccm_common.cc_remainder_len 184 #define ccm_lastp ccm_common.cc_lastp 185 #define ccm_copy_to ccm_common.cc_copy_to 186 #define ccm_flags ccm_common.cc_flags 187 188 /* 189 * gcm_tag_len: Length of authentication tag. 190 * 191 * gcm_ghash: Stores output from the GHASH function. 192 * 193 * gcm_processed_data_len: 194 * Length of processed plaintext (encrypt) or 195 * length of processed ciphertext (decrypt). 196 * 197 * gcm_pt_buf: Stores the decrypted plaintext returned by 198 * decrypt_final when the computed authentication 199 * tag matches the user supplied tag. 200 * 201 * gcm_pt_buf_len: Length of the plaintext buffer. 202 * 203 * gcm_H: Subkey. 204 * 205 * gcm_J0: Pre-counter block generated from the IV. 206 * 207 * gcm_len_a_len_c: 64-bit representations of the bit lengths of 208 * AAD and ciphertext. 209 * 210 * gcm_kmflag: Current value of kmflag. Used only for allocating 211 * the plaintext buffer during decryption. 212 */ 213 typedef struct gcm_ctx { 214 struct common_ctx gcm_common; 215 size_t gcm_tag_len; 216 size_t gcm_processed_data_len; 217 size_t gcm_pt_buf_len; 218 uint32_t gcm_tmp[4]; 219 uint64_t gcm_ghash[2]; 220 uint64_t gcm_H[2]; 221 uint64_t gcm_J0[2]; 222 uint64_t gcm_len_a_len_c[2]; 223 uint8_t *gcm_pt_buf; 224 int gcm_kmflag; 225 } gcm_ctx_t; 226 227 #define gcm_keysched gcm_common.cc_keysched 228 #define gcm_keysched_len gcm_common.cc_keysched_len 229 #define gcm_cb gcm_common.cc_iv 230 #define gcm_remainder gcm_common.cc_remainder 231 #define gcm_remainder_len gcm_common.cc_remainder_len 232 #define gcm_lastp gcm_common.cc_lastp 233 #define gcm_copy_to gcm_common.cc_copy_to 234 #define gcm_flags gcm_common.cc_flags 235 236 #define AES_GMAC_IV_LEN 12 237 #define AES_GMAC_TAG_BITS 128 238 239 typedef struct aes_ctx { 240 union { 241 ecb_ctx_t acu_ecb; 242 cbc_ctx_t acu_cbc; 243 ctr_ctx_t acu_ctr; 244 #ifdef _KERNEL 245 ccm_ctx_t acu_ccm; 246 gcm_ctx_t acu_gcm; 247 #endif 248 } acu; 249 } aes_ctx_t; 250 251 #define ac_flags acu.acu_ecb.ecb_common.cc_flags 252 #define ac_remainder_len acu.acu_ecb.ecb_common.cc_remainder_len 253 #define ac_keysched acu.acu_ecb.ecb_common.cc_keysched 254 #define ac_keysched_len acu.acu_ecb.ecb_common.cc_keysched_len 255 #define ac_iv acu.acu_ecb.ecb_common.cc_iv 256 #define ac_lastp acu.acu_ecb.ecb_common.cc_lastp 257 #define ac_pt_buf acu.acu_ccm.ccm_pt_buf 258 #define ac_mac_len acu.acu_ccm.ccm_mac_len 259 #define ac_data_len acu.acu_ccm.ccm_data_len 260 #define ac_processed_mac_len acu.acu_ccm.ccm_processed_mac_len 261 #define ac_processed_data_len acu.acu_ccm.ccm_processed_data_len 262 #define ac_tag_len acu.acu_gcm.gcm_tag_len 263 264 typedef struct blowfish_ctx { 265 union { 266 ecb_ctx_t bcu_ecb; 267 cbc_ctx_t bcu_cbc; 268 } bcu; 269 } blowfish_ctx_t; 270 271 #define bc_flags bcu.bcu_ecb.ecb_common.cc_flags 272 #define bc_remainder_len bcu.bcu_ecb.ecb_common.cc_remainder_len 273 #define bc_keysched bcu.bcu_ecb.ecb_common.cc_keysched 274 #define bc_keysched_len bcu.bcu_ecb.ecb_common.cc_keysched_len 275 #define bc_iv bcu.bcu_ecb.ecb_common.cc_iv 276 #define bc_lastp bcu.bcu_ecb.ecb_common.cc_lastp 277 278 typedef struct des_ctx { 279 union { 280 ecb_ctx_t dcu_ecb; 281 cbc_ctx_t dcu_cbc; 282 } dcu; 283 } des_ctx_t; 284 285 #define dc_flags dcu.dcu_ecb.ecb_common.cc_flags 286 #define dc_remainder_len dcu.dcu_ecb.ecb_common.cc_remainder_len 287 #define dc_keysched dcu.dcu_ecb.ecb_common.cc_keysched 288 #define dc_keysched_len dcu.dcu_ecb.ecb_common.cc_keysched_len 289 #define dc_iv dcu.dcu_ecb.ecb_common.cc_iv 290 #define dc_lastp dcu.dcu_ecb.ecb_common.cc_lastp 291 292 extern int ecb_cipher_contiguous_blocks(ecb_ctx_t *, char *, size_t, 293 crypto_data_t *, size_t, int (*cipher)(const void *, const uint8_t *, 294 uint8_t *)); 295 296 extern int cbc_encrypt_contiguous_blocks(cbc_ctx_t *, char *, size_t, 297 crypto_data_t *, size_t, 298 int (*encrypt)(const void *, const uint8_t *, uint8_t *), 299 void (*copy_block)(uint8_t *, uint8_t *), 300 void (*xor_block)(uint8_t *, uint8_t *)); 301 302 extern int cbc_decrypt_contiguous_blocks(cbc_ctx_t *, char *, size_t, 303 crypto_data_t *, size_t, 304 int (*decrypt)(const void *, const uint8_t *, uint8_t *), 305 void (*copy_block)(uint8_t *, uint8_t *), 306 void (*xor_block)(uint8_t *, uint8_t *)); 307 308 extern int ctr_mode_contiguous_blocks(ctr_ctx_t *, char *, size_t, 309 crypto_data_t *, size_t, 310 int (*cipher)(const void *, const uint8_t *, uint8_t *), 311 void (*xor_block)(uint8_t *, uint8_t *)); 312 313 extern int ccm_mode_encrypt_contiguous_blocks(ccm_ctx_t *, char *, size_t, 314 crypto_data_t *, size_t, 315 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 316 void (*copy_block)(uint8_t *, uint8_t *), 317 void (*xor_block)(uint8_t *, uint8_t *)); 318 319 extern int ccm_mode_decrypt_contiguous_blocks(ccm_ctx_t *, char *, size_t, 320 crypto_data_t *, size_t, 321 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 322 void (*copy_block)(uint8_t *, uint8_t *), 323 void (*xor_block)(uint8_t *, uint8_t *)); 324 325 extern int gcm_mode_encrypt_contiguous_blocks(gcm_ctx_t *, char *, size_t, 326 crypto_data_t *, size_t, 327 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 328 void (*copy_block)(uint8_t *, uint8_t *), 329 void (*xor_block)(uint8_t *, uint8_t *)); 330 331 extern int gcm_mode_decrypt_contiguous_blocks(gcm_ctx_t *, char *, size_t, 332 crypto_data_t *, size_t, 333 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 334 void (*copy_block)(uint8_t *, uint8_t *), 335 void (*xor_block)(uint8_t *, uint8_t *)); 336 337 int ccm_encrypt_final(ccm_ctx_t *, crypto_data_t *, size_t, 338 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 339 void (*xor_block)(uint8_t *, uint8_t *)); 340 341 int gcm_encrypt_final(gcm_ctx_t *, crypto_data_t *, size_t, 342 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 343 void (*copy_block)(uint8_t *, uint8_t *), 344 void (*xor_block)(uint8_t *, uint8_t *)); 345 346 extern int ccm_decrypt_final(ccm_ctx_t *, crypto_data_t *, size_t, 347 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 348 void (*copy_block)(uint8_t *, uint8_t *), 349 void (*xor_block)(uint8_t *, uint8_t *)); 350 351 extern int gcm_decrypt_final(gcm_ctx_t *, crypto_data_t *, size_t, 352 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 353 void (*xor_block)(uint8_t *, uint8_t *)); 354 355 extern int cmac_mode_final(cbc_ctx_t *, crypto_data_t *, 356 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 357 void (*xor_block)(uint8_t *, uint8_t *)); 358 359 extern int ctr_mode_final(ctr_ctx_t *, crypto_data_t *, 360 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *)); 361 362 extern int cbc_init_ctx(cbc_ctx_t *, char *, size_t, size_t, 363 void (*copy_block)(uint8_t *, uint64_t *)); 364 365 extern int cmac_init_ctx(cbc_ctx_t *, size_t); 366 367 extern int ctr_init_ctx(ctr_ctx_t *, ulong_t, uint8_t *, 368 void (*copy_block)(uint8_t *, uint8_t *)); 369 370 extern int ccm_init_ctx(ccm_ctx_t *, char *, int, boolean_t, size_t, 371 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 372 void (*xor_block)(uint8_t *, uint8_t *)); 373 374 extern int gcm_init_ctx(gcm_ctx_t *, char *, size_t, 375 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 376 void (*copy_block)(uint8_t *, uint8_t *), 377 void (*xor_block)(uint8_t *, uint8_t *)); 378 379 extern int gmac_init_ctx(gcm_ctx_t *, char *, size_t, 380 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *), 381 void (*copy_block)(uint8_t *, uint8_t *), 382 void (*xor_block)(uint8_t *, uint8_t *)); 383 384 extern void calculate_ccm_mac(ccm_ctx_t *, uint8_t *, 385 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *)); 386 387 extern void gcm_mul(uint64_t *, uint64_t *, uint64_t *); 388 389 extern void crypto_init_ptrs(crypto_data_t *, void **, offset_t *); 390 extern void crypto_get_ptrs(crypto_data_t *, void **, offset_t *, 391 uint8_t **, size_t *, uint8_t **, size_t); 392 393 extern void *ecb_alloc_ctx(int); 394 extern void *cbc_alloc_ctx(int); 395 extern void *cmac_alloc_ctx(int); 396 extern void *ctr_alloc_ctx(int); 397 extern void *ccm_alloc_ctx(int); 398 extern void *gcm_alloc_ctx(int); 399 extern void *gmac_alloc_ctx(int); 400 extern void crypto_free_mode_ctx(void *); 401 extern void gcm_set_kmflag(gcm_ctx_t *, int); 402 extern int crypto_put_output_data(uchar_t *, crypto_data_t *, int); 403 404 #ifdef __cplusplus 405 } 406 #endif 407 408 #endif /* _COMMON_CRYPTO_MODES_H */ 409