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 <linux/types.h> 31 #include <linux/virtio_types.h> 32 #include <linux/virtio_ids.h> 33 #include <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 41 #define VIRTIO_CRYPTO_OPCODE(service, op) (((service) << 8) | (op)) 42 43 struct virtio_crypto_ctrl_header { 44 #define VIRTIO_CRYPTO_CIPHER_CREATE_SESSION \ 45 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x02) 46 #define VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION \ 47 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x03) 48 #define VIRTIO_CRYPTO_HASH_CREATE_SESSION \ 49 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_HASH, 0x02) 50 #define VIRTIO_CRYPTO_HASH_DESTROY_SESSION \ 51 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_HASH, 0x03) 52 #define VIRTIO_CRYPTO_MAC_CREATE_SESSION \ 53 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_MAC, 0x02) 54 #define VIRTIO_CRYPTO_MAC_DESTROY_SESSION \ 55 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_MAC, 0x03) 56 #define VIRTIO_CRYPTO_AEAD_CREATE_SESSION \ 57 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x02) 58 #define VIRTIO_CRYPTO_AEAD_DESTROY_SESSION \ 59 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x03) 60 __le32 opcode; 61 __le32 algo; 62 __le32 flag; 63 /* data virtqueue id */ 64 __le32 queue_id; 65 }; 66 67 struct virtio_crypto_cipher_session_para { 68 #define VIRTIO_CRYPTO_NO_CIPHER 0 69 #define VIRTIO_CRYPTO_CIPHER_ARC4 1 70 #define VIRTIO_CRYPTO_CIPHER_AES_ECB 2 71 #define VIRTIO_CRYPTO_CIPHER_AES_CBC 3 72 #define VIRTIO_CRYPTO_CIPHER_AES_CTR 4 73 #define VIRTIO_CRYPTO_CIPHER_DES_ECB 5 74 #define VIRTIO_CRYPTO_CIPHER_DES_CBC 6 75 #define VIRTIO_CRYPTO_CIPHER_3DES_ECB 7 76 #define VIRTIO_CRYPTO_CIPHER_3DES_CBC 8 77 #define VIRTIO_CRYPTO_CIPHER_3DES_CTR 9 78 #define VIRTIO_CRYPTO_CIPHER_KASUMI_F8 10 79 #define VIRTIO_CRYPTO_CIPHER_SNOW3G_UEA2 11 80 #define VIRTIO_CRYPTO_CIPHER_AES_F8 12 81 #define VIRTIO_CRYPTO_CIPHER_AES_XTS 13 82 #define VIRTIO_CRYPTO_CIPHER_ZUC_EEA3 14 83 __le32 algo; 84 /* length of key */ 85 __le32 keylen; 86 87 #define VIRTIO_CRYPTO_OP_ENCRYPT 1 88 #define VIRTIO_CRYPTO_OP_DECRYPT 2 89 /* encrypt or decrypt */ 90 __le32 op; 91 __le32 padding; 92 }; 93 94 struct virtio_crypto_session_input { 95 /* Device-writable part */ 96 __le64 session_id; 97 __le32 status; 98 __le32 padding; 99 }; 100 101 struct virtio_crypto_cipher_session_req { 102 struct virtio_crypto_cipher_session_para para; 103 __u8 padding[32]; 104 }; 105 106 struct virtio_crypto_hash_session_para { 107 #define VIRTIO_CRYPTO_NO_HASH 0 108 #define VIRTIO_CRYPTO_HASH_MD5 1 109 #define VIRTIO_CRYPTO_HASH_SHA1 2 110 #define VIRTIO_CRYPTO_HASH_SHA_224 3 111 #define VIRTIO_CRYPTO_HASH_SHA_256 4 112 #define VIRTIO_CRYPTO_HASH_SHA_384 5 113 #define VIRTIO_CRYPTO_HASH_SHA_512 6 114 #define VIRTIO_CRYPTO_HASH_SHA3_224 7 115 #define VIRTIO_CRYPTO_HASH_SHA3_256 8 116 #define VIRTIO_CRYPTO_HASH_SHA3_384 9 117 #define VIRTIO_CRYPTO_HASH_SHA3_512 10 118 #define VIRTIO_CRYPTO_HASH_SHA3_SHAKE128 11 119 #define VIRTIO_CRYPTO_HASH_SHA3_SHAKE256 12 120 __le32 algo; 121 /* hash result length */ 122 __le32 hash_result_len; 123 __u8 padding[8]; 124 }; 125 126 struct virtio_crypto_hash_create_session_req { 127 struct virtio_crypto_hash_session_para para; 128 __u8 padding[40]; 129 }; 130 131 struct virtio_crypto_mac_session_para { 132 #define VIRTIO_CRYPTO_NO_MAC 0 133 #define VIRTIO_CRYPTO_MAC_HMAC_MD5 1 134 #define VIRTIO_CRYPTO_MAC_HMAC_SHA1 2 135 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_224 3 136 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_256 4 137 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_384 5 138 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_512 6 139 #define VIRTIO_CRYPTO_MAC_CMAC_3DES 25 140 #define VIRTIO_CRYPTO_MAC_CMAC_AES 26 141 #define VIRTIO_CRYPTO_MAC_KASUMI_F9 27 142 #define VIRTIO_CRYPTO_MAC_SNOW3G_UIA2 28 143 #define VIRTIO_CRYPTO_MAC_GMAC_AES 41 144 #define VIRTIO_CRYPTO_MAC_GMAC_TWOFISH 42 145 #define VIRTIO_CRYPTO_MAC_CBCMAC_AES 49 146 #define VIRTIO_CRYPTO_MAC_CBCMAC_KASUMI_F9 50 147 #define VIRTIO_CRYPTO_MAC_XCBC_AES 53 148 __le32 algo; 149 /* hash result length */ 150 __le32 hash_result_len; 151 /* length of authenticated key */ 152 __le32 auth_key_len; 153 __le32 padding; 154 }; 155 156 struct virtio_crypto_mac_create_session_req { 157 struct virtio_crypto_mac_session_para para; 158 __u8 padding[40]; 159 }; 160 161 struct virtio_crypto_aead_session_para { 162 #define VIRTIO_CRYPTO_NO_AEAD 0 163 #define VIRTIO_CRYPTO_AEAD_GCM 1 164 #define VIRTIO_CRYPTO_AEAD_CCM 2 165 #define VIRTIO_CRYPTO_AEAD_CHACHA20_POLY1305 3 166 __le32 algo; 167 /* length of key */ 168 __le32 key_len; 169 /* hash result length */ 170 __le32 hash_result_len; 171 /* length of the additional authenticated data (AAD) in bytes */ 172 __le32 aad_len; 173 /* encrypt or decrypt, See above VIRTIO_CRYPTO_OP_* */ 174 __le32 op; 175 __le32 padding; 176 }; 177 178 struct virtio_crypto_aead_create_session_req { 179 struct virtio_crypto_aead_session_para para; 180 __u8 padding[32]; 181 }; 182 183 struct virtio_crypto_alg_chain_session_para { 184 #define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER 1 185 #define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH 2 186 __le32 alg_chain_order; 187 /* Plain hash */ 188 #define VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN 1 189 /* Authenticated hash (mac) */ 190 #define VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH 2 191 /* Nested hash */ 192 #define VIRTIO_CRYPTO_SYM_HASH_MODE_NESTED 3 193 __le32 hash_mode; 194 struct virtio_crypto_cipher_session_para cipher_param; 195 union { 196 struct virtio_crypto_hash_session_para hash_param; 197 struct virtio_crypto_mac_session_para mac_param; 198 __u8 padding[16]; 199 } u; 200 /* length of the additional authenticated data (AAD) in bytes */ 201 __le32 aad_len; 202 __le32 padding; 203 }; 204 205 struct virtio_crypto_alg_chain_session_req { 206 struct virtio_crypto_alg_chain_session_para para; 207 }; 208 209 struct virtio_crypto_sym_create_session_req { 210 union { 211 struct virtio_crypto_cipher_session_req cipher; 212 struct virtio_crypto_alg_chain_session_req chain; 213 __u8 padding[48]; 214 } u; 215 216 /* Device-readable part */ 217 218 /* No operation */ 219 #define VIRTIO_CRYPTO_SYM_OP_NONE 0 220 /* Cipher only operation on the data */ 221 #define VIRTIO_CRYPTO_SYM_OP_CIPHER 1 222 /* 223 * Chain any cipher with any hash or mac operation. The order 224 * depends on the value of alg_chain_order param 225 */ 226 #define VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING 2 227 __le32 op_type; 228 __le32 padding; 229 }; 230 231 struct virtio_crypto_destroy_session_req { 232 /* Device-readable part */ 233 __le64 session_id; 234 __u8 padding[48]; 235 }; 236 237 /* The request of the control virtqueue's packet */ 238 struct virtio_crypto_op_ctrl_req { 239 struct virtio_crypto_ctrl_header header; 240 241 union { 242 struct virtio_crypto_sym_create_session_req 243 sym_create_session; 244 struct virtio_crypto_hash_create_session_req 245 hash_create_session; 246 struct virtio_crypto_mac_create_session_req 247 mac_create_session; 248 struct virtio_crypto_aead_create_session_req 249 aead_create_session; 250 struct virtio_crypto_destroy_session_req 251 destroy_session; 252 __u8 padding[56]; 253 } u; 254 }; 255 256 struct virtio_crypto_op_header { 257 #define VIRTIO_CRYPTO_CIPHER_ENCRYPT \ 258 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x00) 259 #define VIRTIO_CRYPTO_CIPHER_DECRYPT \ 260 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x01) 261 #define VIRTIO_CRYPTO_HASH \ 262 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_HASH, 0x00) 263 #define VIRTIO_CRYPTO_MAC \ 264 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_MAC, 0x00) 265 #define VIRTIO_CRYPTO_AEAD_ENCRYPT \ 266 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x00) 267 #define VIRTIO_CRYPTO_AEAD_DECRYPT \ 268 VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x01) 269 __le32 opcode; 270 /* algo should be service-specific algorithms */ 271 __le32 algo; 272 /* session_id should be service-specific algorithms */ 273 __le64 session_id; 274 /* control flag to control the request */ 275 __le32 flag; 276 __le32 padding; 277 }; 278 279 struct virtio_crypto_cipher_para { 280 /* 281 * Byte Length of valid IV/Counter 282 * 283 * For block ciphers in CBC or F8 mode, or for Kasumi in F8 mode, or for 284 * SNOW3G in UEA2 mode, this is the length of the IV (which 285 * must be the same as the block length of the cipher). 286 * For block ciphers in CTR mode, this is the length of the counter 287 * (which must be the same as the block length of the cipher). 288 * For AES-XTS, this is the 128bit tweak, i, from IEEE Std 1619-2007. 289 * 290 * The IV/Counter will be updated after every partial cryptographic 291 * operation. 292 */ 293 __le32 iv_len; 294 /* length of source data */ 295 __le32 src_data_len; 296 /* length of dst data */ 297 __le32 dst_data_len; 298 __le32 padding; 299 }; 300 301 struct virtio_crypto_hash_para { 302 /* length of source data */ 303 __le32 src_data_len; 304 /* hash result length */ 305 __le32 hash_result_len; 306 }; 307 308 struct virtio_crypto_mac_para { 309 struct virtio_crypto_hash_para hash; 310 }; 311 312 struct virtio_crypto_aead_para { 313 /* 314 * Byte Length of valid IV data pointed to by the below iv_addr 315 * parameter. 316 * 317 * For GCM mode, this is either 12 (for 96-bit IVs) or 16, in which 318 * case iv_addr points to J0. 319 * For CCM mode, this is the length of the nonce, which can be in the 320 * range 7 to 13 inclusive. 321 */ 322 __le32 iv_len; 323 /* length of additional auth data */ 324 __le32 aad_len; 325 /* length of source data */ 326 __le32 src_data_len; 327 /* length of dst data */ 328 __le32 dst_data_len; 329 }; 330 331 struct virtio_crypto_cipher_data_req { 332 /* Device-readable part */ 333 struct virtio_crypto_cipher_para para; 334 __u8 padding[24]; 335 }; 336 337 struct virtio_crypto_hash_data_req { 338 /* Device-readable part */ 339 struct virtio_crypto_hash_para para; 340 __u8 padding[40]; 341 }; 342 343 struct virtio_crypto_mac_data_req { 344 /* Device-readable part */ 345 struct virtio_crypto_mac_para para; 346 __u8 padding[40]; 347 }; 348 349 struct virtio_crypto_alg_chain_data_para { 350 __le32 iv_len; 351 /* Length of source data */ 352 __le32 src_data_len; 353 /* Length of destination data */ 354 __le32 dst_data_len; 355 /* Starting point for cipher processing in source data */ 356 __le32 cipher_start_src_offset; 357 /* Length of the source data that the cipher will be computed on */ 358 __le32 len_to_cipher; 359 /* Starting point for hash processing in source data */ 360 __le32 hash_start_src_offset; 361 /* Length of the source data that the hash will be computed on */ 362 __le32 len_to_hash; 363 /* Length of the additional auth data */ 364 __le32 aad_len; 365 /* Length of the hash result */ 366 __le32 hash_result_len; 367 __le32 reserved; 368 }; 369 370 struct virtio_crypto_alg_chain_data_req { 371 /* Device-readable part */ 372 struct virtio_crypto_alg_chain_data_para para; 373 }; 374 375 struct virtio_crypto_sym_data_req { 376 union { 377 struct virtio_crypto_cipher_data_req cipher; 378 struct virtio_crypto_alg_chain_data_req chain; 379 __u8 padding[40]; 380 } u; 381 382 /* See above VIRTIO_CRYPTO_SYM_OP_* */ 383 __le32 op_type; 384 __le32 padding; 385 }; 386 387 struct virtio_crypto_aead_data_req { 388 /* Device-readable part */ 389 struct virtio_crypto_aead_para para; 390 __u8 padding[32]; 391 }; 392 393 /* The request of the data virtqueue's packet */ 394 struct virtio_crypto_op_data_req { 395 struct virtio_crypto_op_header header; 396 397 union { 398 struct virtio_crypto_sym_data_req sym_req; 399 struct virtio_crypto_hash_data_req hash_req; 400 struct virtio_crypto_mac_data_req mac_req; 401 struct virtio_crypto_aead_data_req aead_req; 402 __u8 padding[48]; 403 } u; 404 }; 405 406 #define VIRTIO_CRYPTO_OK 0 407 #define VIRTIO_CRYPTO_ERR 1 408 #define VIRTIO_CRYPTO_BADMSG 2 409 #define VIRTIO_CRYPTO_NOTSUPP 3 410 #define VIRTIO_CRYPTO_INVSESS 4 /* Invalid session id */ 411 412 /* The accelerator hardware is ready */ 413 #define VIRTIO_CRYPTO_S_HW_READY (1 << 0) 414 415 struct virtio_crypto_config { 416 /* See VIRTIO_CRYPTO_OP_* above */ 417 __u32 status; 418 419 /* 420 * Maximum number of data queue 421 */ 422 __u32 max_dataqueues; 423 424 /* 425 * Specifies the services mask which the device support, 426 * see VIRTIO_CRYPTO_SERVICE_* above 427 */ 428 __u32 crypto_services; 429 430 /* Detailed algorithms mask */ 431 __u32 cipher_algo_l; 432 __u32 cipher_algo_h; 433 __u32 hash_algo; 434 __u32 mac_algo_l; 435 __u32 mac_algo_h; 436 __u32 aead_algo; 437 /* Maximum length of cipher key */ 438 __u32 max_cipher_key_len; 439 /* Maximum length of authenticated key */ 440 __u32 max_auth_key_len; 441 __u32 reserve; 442 /* Maximum size of each crypto request's content */ 443 __u64 max_size; 444 }; 445 446 struct virtio_crypto_inhdr { 447 /* See VIRTIO_CRYPTO_* above */ 448 __u8 status; 449 }; 450 #endif 451
