1 #ifndef _VIRTIO_CRYPTO_H 2 #define _VIRTIO_CRYPTO_H 3 /* This header is BSD licensed so anyone can use the definitions to implement 4 * compatible drivers/servers. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of IBM nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL IBM OR 21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 24 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 27 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 #include "standard-headers/linux/types.h" 31 #include "standard-headers/linux/virtio_types.h" 32 #include "standard-headers/linux/virtio_ids.h" 33 #include "standard-headers/linux/virtio_config.h" 34 35 36 #define VIRTIO_CRYPTO_SERVICE_CIPHER 0 37 #define VIRTIO_CRYPTO_SERVICE_HASH 1 38 #define VIRTIO_CRYPTO_SERVICE_MAC 2 39 #define VIRTIO_CRYPTO_SERVICE_AEAD 3 40 #define VIRTIO_CRYPTO_SERVICE_AKCIPHER 4 41 42 #define VIRTIO_CRYPTO_OPCODE(service, op) (((service) << 8) | (op)) 43 44 struct virtio_crypto_ctrl_header { 45 #define VIRTIO_CRYPTO_CIPHER_CREATE_SESSION \ 46 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x02) 47 #define VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION \ 48 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x03) 49 #define VIRTIO_CRYPTO_HASH_CREATE_SESSION \ 50 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_HASH, 0x02) 51 #define VIRTIO_CRYPTO_HASH_DESTROY_SESSION \ 52 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_HASH, 0x03) 53 #define VIRTIO_CRYPTO_MAC_CREATE_SESSION \ 54 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_MAC, 0x02) 55 #define VIRTIO_CRYPTO_MAC_DESTROY_SESSION \ 56 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_MAC, 0x03) 57 #define VIRTIO_CRYPTO_AEAD_CREATE_SESSION \ 58 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x02) 59 #define VIRTIO_CRYPTO_AEAD_DESTROY_SESSION \ 60 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x03) 61 #define VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION \ 62 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x04) 63 #define VIRTIO_CRYPTO_AKCIPHER_DESTROY_SESSION \ 64 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x05) 65 uint32_t opcode; 66 uint32_t algo; 67 uint32_t flag; 68 /* data virtqueue id */ 69 uint32_t queue_id; 70 }; 71 72 struct virtio_crypto_cipher_session_para { 73 #define VIRTIO_CRYPTO_NO_CIPHER 0 74 #define VIRTIO_CRYPTO_CIPHER_ARC4 1 75 #define VIRTIO_CRYPTO_CIPHER_AES_ECB 2 76 #define VIRTIO_CRYPTO_CIPHER_AES_CBC 3 77 #define VIRTIO_CRYPTO_CIPHER_AES_CTR 4 78 #define VIRTIO_CRYPTO_CIPHER_DES_ECB 5 79 #define VIRTIO_CRYPTO_CIPHER_DES_CBC 6 80 #define VIRTIO_CRYPTO_CIPHER_3DES_ECB 7 81 #define VIRTIO_CRYPTO_CIPHER_3DES_CBC 8 82 #define VIRTIO_CRYPTO_CIPHER_3DES_CTR 9 83 #define VIRTIO_CRYPTO_CIPHER_KASUMI_F8 10 84 #define VIRTIO_CRYPTO_CIPHER_SNOW3G_UEA2 11 85 #define VIRTIO_CRYPTO_CIPHER_AES_F8 12 86 #define VIRTIO_CRYPTO_CIPHER_AES_XTS 13 87 #define VIRTIO_CRYPTO_CIPHER_ZUC_EEA3 14 88 uint32_t algo; 89 /* length of key */ 90 uint32_t keylen; 91 92 #define VIRTIO_CRYPTO_OP_ENCRYPT 1 93 #define VIRTIO_CRYPTO_OP_DECRYPT 2 94 /* encrypt or decrypt */ 95 uint32_t op; 96 uint32_t padding; 97 }; 98 99 struct virtio_crypto_session_input { 100 /* Device-writable part */ 101 uint64_t session_id; 102 uint32_t status; 103 uint32_t padding; 104 }; 105 106 struct virtio_crypto_cipher_session_req { 107 struct virtio_crypto_cipher_session_para para; 108 uint8_t padding[32]; 109 }; 110 111 struct virtio_crypto_hash_session_para { 112 #define VIRTIO_CRYPTO_NO_HASH 0 113 #define VIRTIO_CRYPTO_HASH_MD5 1 114 #define VIRTIO_CRYPTO_HASH_SHA1 2 115 #define VIRTIO_CRYPTO_HASH_SHA_224 3 116 #define VIRTIO_CRYPTO_HASH_SHA_256 4 117 #define VIRTIO_CRYPTO_HASH_SHA_384 5 118 #define VIRTIO_CRYPTO_HASH_SHA_512 6 119 #define VIRTIO_CRYPTO_HASH_SHA3_224 7 120 #define VIRTIO_CRYPTO_HASH_SHA3_256 8 121 #define VIRTIO_CRYPTO_HASH_SHA3_384 9 122 #define VIRTIO_CRYPTO_HASH_SHA3_512 10 123 #define VIRTIO_CRYPTO_HASH_SHA3_SHAKE128 11 124 #define VIRTIO_CRYPTO_HASH_SHA3_SHAKE256 12 125 uint32_t algo; 126 /* hash result length */ 127 uint32_t hash_result_len; 128 uint8_t padding[8]; 129 }; 130 131 struct virtio_crypto_hash_create_session_req { 132 struct virtio_crypto_hash_session_para para; 133 uint8_t padding[40]; 134 }; 135 136 struct virtio_crypto_mac_session_para { 137 #define VIRTIO_CRYPTO_NO_MAC 0 138 #define VIRTIO_CRYPTO_MAC_HMAC_MD5 1 139 #define VIRTIO_CRYPTO_MAC_HMAC_SHA1 2 140 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_224 3 141 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_256 4 142 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_384 5 143 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_512 6 144 #define VIRTIO_CRYPTO_MAC_CMAC_3DES 25 145 #define VIRTIO_CRYPTO_MAC_CMAC_AES 26 146 #define VIRTIO_CRYPTO_MAC_KASUMI_F9 27 147 #define VIRTIO_CRYPTO_MAC_SNOW3G_UIA2 28 148 #define VIRTIO_CRYPTO_MAC_GMAC_AES 41 149 #define VIRTIO_CRYPTO_MAC_GMAC_TWOFISH 42 150 #define VIRTIO_CRYPTO_MAC_CBCMAC_AES 49 151 #define VIRTIO_CRYPTO_MAC_CBCMAC_KASUMI_F9 50 152 #define VIRTIO_CRYPTO_MAC_XCBC_AES 53 153 uint32_t algo; 154 /* hash result length */ 155 uint32_t hash_result_len; 156 /* length of authenticated key */ 157 uint32_t auth_key_len; 158 uint32_t padding; 159 }; 160 161 struct virtio_crypto_mac_create_session_req { 162 struct virtio_crypto_mac_session_para para; 163 uint8_t padding[40]; 164 }; 165 166 struct virtio_crypto_aead_session_para { 167 #define VIRTIO_CRYPTO_NO_AEAD 0 168 #define VIRTIO_CRYPTO_AEAD_GCM 1 169 #define VIRTIO_CRYPTO_AEAD_CCM 2 170 #define VIRTIO_CRYPTO_AEAD_CHACHA20_POLY1305 3 171 uint32_t algo; 172 /* length of key */ 173 uint32_t key_len; 174 /* hash result length */ 175 uint32_t hash_result_len; 176 /* length of the additional authenticated data (AAD) in bytes */ 177 uint32_t aad_len; 178 /* encrypt or decrypt, See above VIRTIO_CRYPTO_OP_* */ 179 uint32_t op; 180 uint32_t padding; 181 }; 182 183 struct virtio_crypto_aead_create_session_req { 184 struct virtio_crypto_aead_session_para para; 185 uint8_t padding[32]; 186 }; 187 188 struct virtio_crypto_rsa_session_para { 189 #define VIRTIO_CRYPTO_RSA_RAW_PADDING 0 190 #define VIRTIO_CRYPTO_RSA_PKCS1_PADDING 1 191 uint32_t padding_algo; 192 193 #define VIRTIO_CRYPTO_RSA_NO_HASH 0 194 #define VIRTIO_CRYPTO_RSA_MD2 1 195 #define VIRTIO_CRYPTO_RSA_MD3 2 196 #define VIRTIO_CRYPTO_RSA_MD4 3 197 #define VIRTIO_CRYPTO_RSA_MD5 4 198 #define VIRTIO_CRYPTO_RSA_SHA1 5 199 #define VIRTIO_CRYPTO_RSA_SHA256 6 200 #define VIRTIO_CRYPTO_RSA_SHA384 7 201 #define VIRTIO_CRYPTO_RSA_SHA512 8 202 #define VIRTIO_CRYPTO_RSA_SHA224 9 203 uint32_t hash_algo; 204 }; 205 206 struct virtio_crypto_ecdsa_session_para { 207 #define VIRTIO_CRYPTO_CURVE_UNKNOWN 0 208 #define VIRTIO_CRYPTO_CURVE_NIST_P192 1 209 #define VIRTIO_CRYPTO_CURVE_NIST_P224 2 210 #define VIRTIO_CRYPTO_CURVE_NIST_P256 3 211 #define VIRTIO_CRYPTO_CURVE_NIST_P384 4 212 #define VIRTIO_CRYPTO_CURVE_NIST_P521 5 213 uint32_t curve_id; 214 uint32_t padding; 215 }; 216 217 struct virtio_crypto_akcipher_session_para { 218 #define VIRTIO_CRYPTO_NO_AKCIPHER 0 219 #define VIRTIO_CRYPTO_AKCIPHER_RSA 1 220 #define VIRTIO_CRYPTO_AKCIPHER_DSA 2 221 #define VIRTIO_CRYPTO_AKCIPHER_ECDSA 3 222 uint32_t algo; 223 224 #define VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC 1 225 #define VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE 2 226 uint32_t keytype; 227 uint32_t keylen; 228 229 union { 230 struct virtio_crypto_rsa_session_para rsa; 231 struct virtio_crypto_ecdsa_session_para ecdsa; 232 } u; 233 }; 234 235 struct virtio_crypto_akcipher_create_session_req { 236 struct virtio_crypto_akcipher_session_para para; 237 uint8_t padding[36]; 238 }; 239 240 struct virtio_crypto_alg_chain_session_para { 241 #define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER 1 242 #define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH 2 243 uint32_t alg_chain_order; 244 /* Plain hash */ 245 #define VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN 1 246 /* Authenticated hash (mac) */ 247 #define VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH 2 248 /* Nested hash */ 249 #define VIRTIO_CRYPTO_SYM_HASH_MODE_NESTED 3 250 uint32_t hash_mode; 251 struct virtio_crypto_cipher_session_para cipher_param; 252 union { 253 struct virtio_crypto_hash_session_para hash_param; 254 struct virtio_crypto_mac_session_para mac_param; 255 uint8_t padding[16]; 256 } u; 257 /* length of the additional authenticated data (AAD) in bytes */ 258 uint32_t aad_len; 259 uint32_t padding; 260 }; 261 262 struct virtio_crypto_alg_chain_session_req { 263 struct virtio_crypto_alg_chain_session_para para; 264 }; 265 266 struct virtio_crypto_sym_create_session_req { 267 union { 268 struct virtio_crypto_cipher_session_req cipher; 269 struct virtio_crypto_alg_chain_session_req chain; 270 uint8_t padding[48]; 271 } u; 272 273 /* Device-readable part */ 274 275 /* No operation */ 276 #define VIRTIO_CRYPTO_SYM_OP_NONE 0 277 /* Cipher only operation on the data */ 278 #define VIRTIO_CRYPTO_SYM_OP_CIPHER 1 279 /* 280 * Chain any cipher with any hash or mac operation. The order 281 * depends on the value of alg_chain_order param 282 */ 283 #define VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING 2 284 uint32_t op_type; 285 uint32_t padding; 286 }; 287 288 struct virtio_crypto_destroy_session_req { 289 /* Device-readable part */ 290 uint64_t session_id; 291 uint8_t padding[48]; 292 }; 293 294 /* The request of the control virtqueue's packet */ 295 struct virtio_crypto_op_ctrl_req { 296 struct virtio_crypto_ctrl_header header; 297 298 union { 299 struct virtio_crypto_sym_create_session_req 300 sym_create_session; 301 struct virtio_crypto_hash_create_session_req 302 hash_create_session; 303 struct virtio_crypto_mac_create_session_req 304 mac_create_session; 305 struct virtio_crypto_aead_create_session_req 306 aead_create_session; 307 struct virtio_crypto_akcipher_create_session_req 308 akcipher_create_session; 309 struct virtio_crypto_destroy_session_req 310 destroy_session; 311 uint8_t padding[56]; 312 } u; 313 }; 314 315 struct virtio_crypto_op_header { 316 #define VIRTIO_CRYPTO_CIPHER_ENCRYPT \ 317 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x00) 318 #define VIRTIO_CRYPTO_CIPHER_DECRYPT \ 319 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x01) 320 #define VIRTIO_CRYPTO_HASH \ 321 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_HASH, 0x00) 322 #define VIRTIO_CRYPTO_MAC \ 323 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_MAC, 0x00) 324 #define VIRTIO_CRYPTO_AEAD_ENCRYPT \ 325 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x00) 326 #define VIRTIO_CRYPTO_AEAD_DECRYPT \ 327 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x01) 328 #define VIRTIO_CRYPTO_AKCIPHER_ENCRYPT \ 329 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x00) 330 #define VIRTIO_CRYPTO_AKCIPHER_DECRYPT \ 331 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x01) 332 #define VIRTIO_CRYPTO_AKCIPHER_SIGN \ 333 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x02) 334 #define VIRTIO_CRYPTO_AKCIPHER_VERIFY \ 335 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x03) 336 uint32_t opcode; 337 /* algo should be service-specific algorithms */ 338 uint32_t algo; 339 /* session_id should be service-specific algorithms */ 340 uint64_t session_id; 341 /* control flag to control the request */ 342 uint32_t flag; 343 uint32_t padding; 344 }; 345 346 struct virtio_crypto_cipher_para { 347 /* 348 * Byte Length of valid IV/Counter 349 * 350 * For block ciphers in CBC or F8 mode, or for Kasumi in F8 mode, or for 351 * SNOW3G in UEA2 mode, this is the length of the IV (which 352 * must be the same as the block length of the cipher). 353 * For block ciphers in CTR mode, this is the length of the counter 354 * (which must be the same as the block length of the cipher). 355 * For AES-XTS, this is the 128bit tweak, i, from IEEE Std 1619-2007. 356 * 357 * The IV/Counter will be updated after every partial cryptographic 358 * operation. 359 */ 360 uint32_t iv_len; 361 /* length of source data */ 362 uint32_t src_data_len; 363 /* length of dst data */ 364 uint32_t dst_data_len; 365 uint32_t padding; 366 }; 367 368 struct virtio_crypto_hash_para { 369 /* length of source data */ 370 uint32_t src_data_len; 371 /* hash result length */ 372 uint32_t hash_result_len; 373 }; 374 375 struct virtio_crypto_mac_para { 376 struct virtio_crypto_hash_para hash; 377 }; 378 379 struct virtio_crypto_aead_para { 380 /* 381 * Byte Length of valid IV data pointed to by the below iv_addr 382 * parameter. 383 * 384 * For GCM mode, this is either 12 (for 96-bit IVs) or 16, in which 385 * case iv_addr points to J0. 386 * For CCM mode, this is the length of the nonce, which can be in the 387 * range 7 to 13 inclusive. 388 */ 389 uint32_t iv_len; 390 /* length of additional auth data */ 391 uint32_t aad_len; 392 /* length of source data */ 393 uint32_t src_data_len; 394 /* length of dst data */ 395 uint32_t dst_data_len; 396 }; 397 398 struct virtio_crypto_cipher_data_req { 399 /* Device-readable part */ 400 struct virtio_crypto_cipher_para para; 401 uint8_t padding[24]; 402 }; 403 404 struct virtio_crypto_hash_data_req { 405 /* Device-readable part */ 406 struct virtio_crypto_hash_para para; 407 uint8_t padding[40]; 408 }; 409 410 struct virtio_crypto_mac_data_req { 411 /* Device-readable part */ 412 struct virtio_crypto_mac_para para; 413 uint8_t padding[40]; 414 }; 415 416 struct virtio_crypto_alg_chain_data_para { 417 uint32_t iv_len; 418 /* Length of source data */ 419 uint32_t src_data_len; 420 /* Length of destination data */ 421 uint32_t dst_data_len; 422 /* Starting point for cipher processing in source data */ 423 uint32_t cipher_start_src_offset; 424 /* Length of the source data that the cipher will be computed on */ 425 uint32_t len_to_cipher; 426 /* Starting point for hash processing in source data */ 427 uint32_t hash_start_src_offset; 428 /* Length of the source data that the hash will be computed on */ 429 uint32_t len_to_hash; 430 /* Length of the additional auth data */ 431 uint32_t aad_len; 432 /* Length of the hash result */ 433 uint32_t hash_result_len; 434 uint32_t reserved; 435 }; 436 437 struct virtio_crypto_alg_chain_data_req { 438 /* Device-readable part */ 439 struct virtio_crypto_alg_chain_data_para para; 440 }; 441 442 struct virtio_crypto_sym_data_req { 443 union { 444 struct virtio_crypto_cipher_data_req cipher; 445 struct virtio_crypto_alg_chain_data_req chain; 446 uint8_t padding[40]; 447 } u; 448 449 /* See above VIRTIO_CRYPTO_SYM_OP_* */ 450 uint32_t op_type; 451 uint32_t padding; 452 }; 453 454 struct virtio_crypto_aead_data_req { 455 /* Device-readable part */ 456 struct virtio_crypto_aead_para para; 457 uint8_t padding[32]; 458 }; 459 460 struct virtio_crypto_akcipher_para { 461 uint32_t src_data_len; 462 uint32_t dst_data_len; 463 }; 464 465 struct virtio_crypto_akcipher_data_req { 466 struct virtio_crypto_akcipher_para para; 467 uint8_t padding[40]; 468 }; 469 470 /* The request of the data virtqueue's packet */ 471 struct virtio_crypto_op_data_req { 472 struct virtio_crypto_op_header header; 473 474 union { 475 struct virtio_crypto_sym_data_req sym_req; 476 struct virtio_crypto_hash_data_req hash_req; 477 struct virtio_crypto_mac_data_req mac_req; 478 struct virtio_crypto_aead_data_req aead_req; 479 struct virtio_crypto_akcipher_data_req akcipher_req; 480 uint8_t padding[48]; 481 } u; 482 }; 483 484 #define VIRTIO_CRYPTO_OK 0 485 #define VIRTIO_CRYPTO_ERR 1 486 #define VIRTIO_CRYPTO_BADMSG 2 487 #define VIRTIO_CRYPTO_NOTSUPP 3 488 #define VIRTIO_CRYPTO_INVSESS 4 /* Invalid session id */ 489 #define VIRTIO_CRYPTO_NOSPC 5 /* no free session ID */ 490 #define VIRTIO_CRYPTO_KEY_REJECTED 6 /* Signature verification failed */ 491 492 /* The accelerator hardware is ready */ 493 #define VIRTIO_CRYPTO_S_HW_READY (1 << 0) 494 495 struct virtio_crypto_config { 496 /* See VIRTIO_CRYPTO_OP_* above */ 497 uint32_t status; 498 499 /* 500 * Maximum number of data queue 501 */ 502 uint32_t max_dataqueues; 503 504 /* 505 * Specifies the services mask which the device support, 506 * see VIRTIO_CRYPTO_SERVICE_* above 507 */ 508 uint32_t crypto_services; 509 510 /* Detailed algorithms mask */ 511 uint32_t cipher_algo_l; 512 uint32_t cipher_algo_h; 513 uint32_t hash_algo; 514 uint32_t mac_algo_l; 515 uint32_t mac_algo_h; 516 uint32_t aead_algo; 517 /* Maximum length of cipher key */ 518 uint32_t max_cipher_key_len; 519 /* Maximum length of authenticated key */ 520 uint32_t max_auth_key_len; 521 uint32_t akcipher_algo; 522 /* Maximum size of each crypto request's content */ 523 uint64_t max_size; 524 }; 525 526 struct virtio_crypto_inhdr { 527 /* See VIRTIO_CRYPTO_* above */ 528 uint8_t status; 529 }; 530 #endif 531