1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * Userspace interface to the pkey device driver 4 * 5 * Copyright IBM Corp. 2017, 2023 6 * 7 * Author: Harald Freudenberger <freude@de.ibm.com> 8 * 9 */ 10 11 #ifndef _UAPI_PKEY_H 12 #define _UAPI_PKEY_H 13 14 #include <linux/ioctl.h> 15 #include <linux/types.h> 16 17 /* 18 * Ioctl calls supported by the pkey device driver 19 */ 20 21 #define PKEY_IOCTL_MAGIC 'p' 22 23 #define SECKEYBLOBSIZE 64 /* secure key blob size is always 64 bytes */ 24 #define PROTKEYBLOBSIZE 80 /* protected key blob size is always 80 bytes */ 25 #define MAXPROTKEYSIZE 64 /* a protected key blob may be up to 64 bytes */ 26 #define MAXCLRKEYSIZE 32 /* a clear key value may be up to 32 bytes */ 27 #define MAXAESCIPHERKEYSIZE 136 /* our aes cipher keys have always 136 bytes */ 28 #define MINEP11AESKEYBLOBSIZE 256 /* min EP11 AES key blob size */ 29 #define MAXEP11AESKEYBLOBSIZE 336 /* max EP11 AES key blob size */ 30 31 /* Minimum size of a key blob */ 32 #define MINKEYBLOBSIZE SECKEYBLOBSIZE 33 34 /* defines for the type field within the pkey_protkey struct */ 35 #define PKEY_KEYTYPE_AES_128 1 36 #define PKEY_KEYTYPE_AES_192 2 37 #define PKEY_KEYTYPE_AES_256 3 38 #define PKEY_KEYTYPE_ECC 4 39 #define PKEY_KEYTYPE_ECC_P256 5 40 #define PKEY_KEYTYPE_ECC_P384 6 41 #define PKEY_KEYTYPE_ECC_P521 7 42 #define PKEY_KEYTYPE_ECC_ED25519 8 43 #define PKEY_KEYTYPE_ECC_ED448 9 44 #define PKEY_KEYTYPE_AES_XTS_128 10 45 #define PKEY_KEYTYPE_AES_XTS_256 11 46 #define PKEY_KEYTYPE_HMAC_512 12 47 #define PKEY_KEYTYPE_HMAC_1024 13 48 49 /* the newer ioctls use a pkey_key_type enum for type information */ 50 enum pkey_key_type { 51 PKEY_TYPE_CCA_DATA = (__u32) 1, 52 PKEY_TYPE_CCA_CIPHER = (__u32) 2, 53 PKEY_TYPE_EP11 = (__u32) 3, 54 PKEY_TYPE_CCA_ECC = (__u32) 0x1f, 55 PKEY_TYPE_EP11_AES = (__u32) 6, 56 PKEY_TYPE_EP11_ECC = (__u32) 7, 57 PKEY_TYPE_PROTKEY = (__u32) 8, 58 }; 59 60 /* the newer ioctls use a pkey_key_size enum for key size information */ 61 enum pkey_key_size { 62 PKEY_SIZE_AES_128 = (__u32) 128, 63 PKEY_SIZE_AES_192 = (__u32) 192, 64 PKEY_SIZE_AES_256 = (__u32) 256, 65 PKEY_SIZE_UNKNOWN = (__u32) 0xFFFFFFFF, 66 }; 67 68 /* some of the newer ioctls use these flags */ 69 #define PKEY_FLAGS_MATCH_CUR_MKVP 0x00000002 70 #define PKEY_FLAGS_MATCH_ALT_MKVP 0x00000004 71 72 /* keygenflags defines for CCA AES cipher keys */ 73 #define PKEY_KEYGEN_XPRT_SYM 0x00008000 74 #define PKEY_KEYGEN_XPRT_UASY 0x00004000 75 #define PKEY_KEYGEN_XPRT_AASY 0x00002000 76 #define PKEY_KEYGEN_XPRT_RAW 0x00001000 77 #define PKEY_KEYGEN_XPRT_CPAC 0x00000800 78 #define PKEY_KEYGEN_XPRT_DES 0x00000080 79 #define PKEY_KEYGEN_XPRT_AES 0x00000040 80 #define PKEY_KEYGEN_XPRT_RSA 0x00000008 81 82 /* Struct to hold apqn target info (card/domain pair) */ 83 struct pkey_apqn { 84 __u16 card; 85 __u16 domain; 86 }; 87 88 /* Struct to hold a CCA AES secure key blob */ 89 struct pkey_seckey { 90 __u8 seckey[SECKEYBLOBSIZE]; /* the secure key blob */ 91 }; 92 93 /* Struct to hold protected key and length info */ 94 struct pkey_protkey { 95 __u32 type; /* key type, one of the PKEY_KEYTYPE_AES values */ 96 __u32 len; /* bytes actually stored in protkey[] */ 97 __u8 protkey[MAXPROTKEYSIZE]; /* the protected key blob */ 98 }; 99 100 /* Struct to hold an AES clear key value */ 101 struct pkey_clrkey { 102 __u8 clrkey[MAXCLRKEYSIZE]; /* 16, 24, or 32 byte clear key value */ 103 }; 104 105 /* 106 * EP11 key blobs of type PKEY_TYPE_EP11_AES and PKEY_TYPE_EP11_ECC 107 * are ep11 blobs prepended by this header: 108 */ 109 struct ep11kblob_header { 110 __u8 type; /* always 0x00 */ 111 __u8 hver; /* header version, currently needs to be 0x00 */ 112 __u16 len; /* total length in bytes (including this header) */ 113 __u8 version; /* PKEY_TYPE_EP11_AES or PKEY_TYPE_EP11_ECC */ 114 __u8 res0; /* unused */ 115 __u16 bitlen; /* clear key bit len, 0 for unknown */ 116 __u8 res1[8]; /* unused */ 117 } __packed; 118 119 /* 120 * Generate CCA AES secure key. 121 */ 122 struct pkey_genseck { 123 __u16 cardnr; /* in: card to use or FFFF for any */ 124 __u16 domain; /* in: domain or FFFF for any */ 125 __u32 keytype; /* in: key type to generate */ 126 struct pkey_seckey seckey; /* out: the secure key blob */ 127 }; 128 #define PKEY_GENSECK _IOWR(PKEY_IOCTL_MAGIC, 0x01, struct pkey_genseck) 129 130 /* 131 * Construct CCA AES secure key from clear key value 132 */ 133 struct pkey_clr2seck { 134 __u16 cardnr; /* in: card to use or FFFF for any */ 135 __u16 domain; /* in: domain or FFFF for any */ 136 __u32 keytype; /* in: key type to generate */ 137 struct pkey_clrkey clrkey; /* in: the clear key value */ 138 struct pkey_seckey seckey; /* out: the secure key blob */ 139 }; 140 #define PKEY_CLR2SECK _IOWR(PKEY_IOCTL_MAGIC, 0x02, struct pkey_clr2seck) 141 142 /* 143 * Fabricate AES protected key from a CCA AES secure key 144 */ 145 struct pkey_sec2protk { 146 __u16 cardnr; /* in: card to use or FFFF for any */ 147 __u16 domain; /* in: domain or FFFF for any */ 148 struct pkey_seckey seckey; /* in: the secure key blob */ 149 struct pkey_protkey protkey; /* out: the protected key */ 150 }; 151 #define PKEY_SEC2PROTK _IOWR(PKEY_IOCTL_MAGIC, 0x03, struct pkey_sec2protk) 152 153 /* 154 * Fabricate AES protected key from clear key value 155 */ 156 struct pkey_clr2protk { 157 __u32 keytype; /* in: key type to generate */ 158 struct pkey_clrkey clrkey; /* in: the clear key value */ 159 struct pkey_protkey protkey; /* out: the protected key */ 160 }; 161 #define PKEY_CLR2PROTK _IOWR(PKEY_IOCTL_MAGIC, 0x04, struct pkey_clr2protk) 162 163 /* 164 * Search for matching crypto card based on the Master Key 165 * Verification Pattern provided inside a CCA AES secure key. 166 */ 167 struct pkey_findcard { 168 struct pkey_seckey seckey; /* in: the secure key blob */ 169 __u16 cardnr; /* out: card number */ 170 __u16 domain; /* out: domain number */ 171 }; 172 #define PKEY_FINDCARD _IOWR(PKEY_IOCTL_MAGIC, 0x05, struct pkey_findcard) 173 174 /* 175 * Combined together: findcard + sec2prot 176 */ 177 struct pkey_skey2pkey { 178 struct pkey_seckey seckey; /* in: the secure key blob */ 179 struct pkey_protkey protkey; /* out: the protected key */ 180 }; 181 #define PKEY_SKEY2PKEY _IOWR(PKEY_IOCTL_MAGIC, 0x06, struct pkey_skey2pkey) 182 183 /* 184 * Verify the given CCA AES secure key for being able to be usable with 185 * the pkey module. Check for correct key type and check for having at 186 * least one crypto card being able to handle this key (master key 187 * or old master key verification pattern matches). 188 * Return some info about the key: keysize in bits, keytype (currently 189 * only AES), flag if key is wrapped with an old MKVP. 190 */ 191 struct pkey_verifykey { 192 struct pkey_seckey seckey; /* in: the secure key blob */ 193 __u16 cardnr; /* out: card number */ 194 __u16 domain; /* out: domain number */ 195 __u16 keysize; /* out: key size in bits */ 196 __u32 attributes; /* out: attribute bits */ 197 }; 198 #define PKEY_VERIFYKEY _IOWR(PKEY_IOCTL_MAGIC, 0x07, struct pkey_verifykey) 199 #define PKEY_VERIFY_ATTR_AES 0x00000001 /* key is an AES key */ 200 #define PKEY_VERIFY_ATTR_OLD_MKVP 0x00000100 /* key has old MKVP value */ 201 202 /* 203 * Generate AES random protected key. 204 */ 205 struct pkey_genprotk { 206 __u32 keytype; /* in: key type to generate */ 207 struct pkey_protkey protkey; /* out: the protected key */ 208 }; 209 210 #define PKEY_GENPROTK _IOWR(PKEY_IOCTL_MAGIC, 0x08, struct pkey_genprotk) 211 212 /* 213 * Verify an AES protected key. 214 */ 215 struct pkey_verifyprotk { 216 struct pkey_protkey protkey; /* in: the protected key to verify */ 217 }; 218 219 #define PKEY_VERIFYPROTK _IOW(PKEY_IOCTL_MAGIC, 0x09, struct pkey_verifyprotk) 220 221 /* 222 * Transform an key blob (of any type) into a protected key 223 */ 224 struct pkey_kblob2pkey { 225 __u8 __user *key; /* in: the key blob */ 226 __u32 keylen; /* in: the key blob length */ 227 struct pkey_protkey protkey; /* out: the protected key */ 228 }; 229 #define PKEY_KBLOB2PROTK _IOWR(PKEY_IOCTL_MAGIC, 0x0A, struct pkey_kblob2pkey) 230 231 /* 232 * Generate secure key, version 2. 233 * Generate CCA AES secure key, CCA AES cipher key or EP11 AES secure key. 234 * There needs to be a list of apqns given with at least one entry in there. 235 * All apqns in the list need to be exact apqns, 0xFFFF as ANY card or domain 236 * is not supported. The implementation walks through the list of apqns and 237 * tries to send the request to each apqn without any further checking (like 238 * card type or online state). If the apqn fails, simple the next one in the 239 * list is tried until success (return 0) or the end of the list is reached 240 * (return -1 with errno ENODEV). You may use the PKEY_APQNS4KT ioctl to 241 * generate a list of apqns based on the key type to generate. 242 * The keygenflags argument is passed to the low level generation functions 243 * individual for the key type and has a key type specific meaning. When 244 * generating CCA cipher keys you can use one or more of the PKEY_KEYGEN_* 245 * flags to widen the export possibilities. By default a cipher key is 246 * only exportable for CPACF (PKEY_KEYGEN_XPRT_CPAC). 247 * The keygenflag argument for generating an EP11 AES key should either be 0 248 * to use the defaults which are XCP_BLOB_ENCRYPT, XCP_BLOB_DECRYPT and 249 * XCP_BLOB_PROTKEY_EXTRACTABLE or a valid combination of XCP_BLOB_* flags. 250 */ 251 struct pkey_genseck2 { 252 struct pkey_apqn __user *apqns; /* in: ptr to list of apqn targets*/ 253 __u32 apqn_entries; /* in: # of apqn target list entries */ 254 enum pkey_key_type type; /* in: key type to generate */ 255 enum pkey_key_size size; /* in: key size to generate */ 256 __u32 keygenflags; /* in: key generation flags */ 257 __u8 __user *key; /* in: pointer to key blob buffer */ 258 __u32 keylen; /* in: available key blob buffer size */ 259 /* out: actual key blob size */ 260 }; 261 #define PKEY_GENSECK2 _IOWR(PKEY_IOCTL_MAGIC, 0x11, struct pkey_genseck2) 262 263 /* 264 * Generate secure key from clear key value, version 2. 265 * Construct an CCA AES secure key, CCA AES cipher key or EP11 AES secure 266 * key from a given clear key value. 267 * There needs to be a list of apqns given with at least one entry in there. 268 * All apqns in the list need to be exact apqns, 0xFFFF as ANY card or domain 269 * is not supported. The implementation walks through the list of apqns and 270 * tries to send the request to each apqn without any further checking (like 271 * card type or online state). If the apqn fails, simple the next one in the 272 * list is tried until success (return 0) or the end of the list is reached 273 * (return -1 with errno ENODEV). You may use the PKEY_APQNS4KT ioctl to 274 * generate a list of apqns based on the key type to generate. 275 * The keygenflags argument is passed to the low level generation functions 276 * individual for the key type and has a key type specific meaning. When 277 * generating CCA cipher keys you can use one or more of the PKEY_KEYGEN_* 278 * flags to widen the export possibilities. By default a cipher key is 279 * only exportable for CPACF (PKEY_KEYGEN_XPRT_CPAC). 280 * The keygenflag argument for generating an EP11 AES key should either be 0 281 * to use the defaults which are XCP_BLOB_ENCRYPT, XCP_BLOB_DECRYPT and 282 * XCP_BLOB_PROTKEY_EXTRACTABLE or a valid combination of XCP_BLOB_* flags. 283 */ 284 struct pkey_clr2seck2 { 285 struct pkey_apqn __user *apqns; /* in: ptr to list of apqn targets */ 286 __u32 apqn_entries; /* in: # of apqn target list entries */ 287 enum pkey_key_type type; /* in: key type to generate */ 288 enum pkey_key_size size; /* in: key size to generate */ 289 __u32 keygenflags; /* in: key generation flags */ 290 struct pkey_clrkey clrkey; /* in: the clear key value */ 291 __u8 __user *key; /* in: pointer to key blob buffer */ 292 __u32 keylen; /* in: available key blob buffer size */ 293 /* out: actual key blob size */ 294 }; 295 #define PKEY_CLR2SECK2 _IOWR(PKEY_IOCTL_MAGIC, 0x12, struct pkey_clr2seck2) 296 297 /* 298 * Verify the given secure key, version 2. 299 * Check for correct key type. If cardnr and domain are given (are not 300 * 0xFFFF) also check if this apqn is able to handle this type of key. 301 * If cardnr and/or domain is 0xFFFF, on return these values are filled 302 * with one apqn able to handle this key. 303 * The function also checks for the master key verification patterns 304 * of the key matching to the current or alternate mkvp of the apqn. 305 * For CCA AES secure keys and CCA AES cipher keys this means to check 306 * the key's mkvp against the current or old mkvp of the apqns. The flags 307 * field is updated with some additional info about the apqn mkvp 308 * match: If the current mkvp matches to the key's mkvp then the 309 * PKEY_FLAGS_MATCH_CUR_MKVP bit is set, if the alternate mkvp matches to 310 * the key's mkvp the PKEY_FLAGS_MATCH_ALT_MKVP is set. For CCA keys the 311 * alternate mkvp is the old master key verification pattern. 312 * CCA AES secure keys are also checked to have the CPACF export allowed 313 * bit enabled (XPRTCPAC) in the kmf1 field. 314 * EP11 keys are also supported and the wkvp of the key is checked against 315 * the current wkvp of the apqns. There is no alternate for this type of 316 * key and so on a match the flag PKEY_FLAGS_MATCH_CUR_MKVP always is set. 317 * EP11 keys are also checked to have XCP_BLOB_PROTKEY_EXTRACTABLE set. 318 * The ioctl returns 0 as long as the given or found apqn matches to 319 * matches with the current or alternate mkvp to the key's mkvp. If the given 320 * apqn does not match or there is no such apqn found, -1 with errno 321 * ENODEV is returned. 322 */ 323 struct pkey_verifykey2 { 324 __u8 __user *key; /* in: pointer to key blob */ 325 __u32 keylen; /* in: key blob size */ 326 __u16 cardnr; /* in/out: card number */ 327 __u16 domain; /* in/out: domain number */ 328 enum pkey_key_type type; /* out: the key type */ 329 enum pkey_key_size size; /* out: the key size */ 330 __u32 flags; /* out: additional key info flags */ 331 }; 332 #define PKEY_VERIFYKEY2 _IOWR(PKEY_IOCTL_MAGIC, 0x17, struct pkey_verifykey2) 333 334 /* 335 * Transform a key blob into a protected key, version 2. 336 * There needs to be a list of apqns given with at least one entry in there. 337 * All apqns in the list need to be exact apqns, 0xFFFF as ANY card or domain 338 * is not supported. The implementation walks through the list of apqns and 339 * tries to send the request to each apqn without any further checking (like 340 * card type or online state). If the apqn fails, simple the next one in the 341 * list is tried until success (return 0) or the end of the list is reached 342 * (return -1 with errno ENODEV). You may use the PKEY_APQNS4K ioctl to 343 * generate a list of apqns based on the key. 344 * Deriving ECC protected keys from ECC secure keys is not supported with 345 * this ioctl, use PKEY_KBLOB2PROTK3 for this purpose. 346 */ 347 struct pkey_kblob2pkey2 { 348 __u8 __user *key; /* in: pointer to key blob */ 349 __u32 keylen; /* in: key blob size */ 350 struct pkey_apqn __user *apqns; /* in: ptr to list of apqn targets */ 351 __u32 apqn_entries; /* in: # of apqn target list entries */ 352 struct pkey_protkey protkey; /* out: the protected key */ 353 }; 354 #define PKEY_KBLOB2PROTK2 _IOWR(PKEY_IOCTL_MAGIC, 0x1A, struct pkey_kblob2pkey2) 355 356 /* 357 * Build a list of APQNs based on a key blob given. 358 * Is able to find out which type of secure key is given (CCA AES secure 359 * key, CCA AES cipher key, CCA ECC private key, EP11 AES key, EP11 ECC private 360 * key) and tries to find all matching crypto cards based on the MKVP and maybe 361 * other criteria (like CCA AES cipher keys need a CEX5C or higher, EP11 keys 362 * with BLOB_PKEY_EXTRACTABLE need a CEX7 and EP11 api version 4). The list of 363 * APQNs is further filtered by the key's mkvp which needs to match to either 364 * the current mkvp (CCA and EP11) or the alternate mkvp (old mkvp, CCA adapters 365 * only) of the apqns. The flags argument may be used to limit the matching 366 * apqns. If the PKEY_FLAGS_MATCH_CUR_MKVP is given, only the current mkvp of 367 * each apqn is compared. Likewise with the PKEY_FLAGS_MATCH_ALT_MKVP. If both 368 * are given, it is assumed to return apqns where either the current or the 369 * alternate mkvp matches. At least one of the matching flags needs to be given. 370 * The flags argument for EP11 keys has no further action and is currently 371 * ignored (but needs to be given as PKEY_FLAGS_MATCH_CUR_MKVP) as there is only 372 * the wkvp from the key to match against the apqn's wkvp. 373 * The list of matching apqns is stored into the space given by the apqns 374 * argument and the number of stored entries goes into apqn_entries. If the list 375 * is empty (apqn_entries is 0) the apqn_entries field is updated to the number 376 * of apqn targets found and the ioctl returns with 0. If apqn_entries is > 0 377 * but the number of apqn targets does not fit into the list, the apqn_targets 378 * field is updated with the number of required entries but there are no apqn 379 * values stored in the list and the ioctl returns with ENOSPC. If no matching 380 * APQN is found, the ioctl returns with 0 but the apqn_entries value is 0. 381 */ 382 struct pkey_apqns4key { 383 __u8 __user *key; /* in: pointer to key blob */ 384 __u32 keylen; /* in: key blob size */ 385 __u32 flags; /* in: match controlling flags */ 386 struct pkey_apqn __user *apqns; /* in/out: ptr to list of apqn targets*/ 387 __u32 apqn_entries; /* in: max # of apqn entries in the list */ 388 /* out: # apqns stored into the list */ 389 }; 390 #define PKEY_APQNS4K _IOWR(PKEY_IOCTL_MAGIC, 0x1B, struct pkey_apqns4key) 391 392 /* 393 * Build a list of APQNs based on a key type given. 394 * Build a list of APQNs based on a given key type and maybe further 395 * restrict the list by given master key verification patterns. 396 * For different key types there may be different ways to match the 397 * master key verification patterns. For CCA keys (CCA data key and CCA 398 * cipher key) the first 8 bytes of cur_mkvp refer to the current AES mkvp value 399 * of the apqn and the first 8 bytes of the alt_mkvp refer to the old AES mkvp. 400 * For CCA ECC keys it is similar but the match is against the APKA current/old 401 * mkvp. The flags argument controls if the apqns current and/or alternate mkvp 402 * should match. If the PKEY_FLAGS_MATCH_CUR_MKVP is given, only the current 403 * mkvp of each apqn is compared. Likewise with the PKEY_FLAGS_MATCH_ALT_MKVP. 404 * If both are given, it is assumed to return apqns where either the 405 * current or the alternate mkvp matches. If no match flag is given 406 * (flags is 0) the mkvp values are ignored for the match process. 407 * For EP11 keys there is only the current wkvp. So if the apqns should also 408 * match to a given wkvp, then the PKEY_FLAGS_MATCH_CUR_MKVP flag should be 409 * set. The wkvp value is 32 bytes but only the leftmost 16 bytes are compared 410 * against the leftmost 16 byte of the wkvp of the apqn. 411 * The list of matching apqns is stored into the space given by the apqns 412 * argument and the number of stored entries goes into apqn_entries. If the list 413 * is empty (apqn_entries is 0) the apqn_entries field is updated to the number 414 * of apqn targets found and the ioctl returns with 0. If apqn_entries is > 0 415 * but the number of apqn targets does not fit into the list, the apqn_targets 416 * field is updated with the number of required entries but there are no apqn 417 * values stored in the list and the ioctl returns with ENOSPC. If no matching 418 * APQN is found, the ioctl returns with 0 but the apqn_entries value is 0. 419 */ 420 struct pkey_apqns4keytype { 421 enum pkey_key_type type; /* in: key type */ 422 __u8 cur_mkvp[32]; /* in: current mkvp */ 423 __u8 alt_mkvp[32]; /* in: alternate mkvp */ 424 __u32 flags; /* in: match controlling flags */ 425 struct pkey_apqn __user *apqns; /* in/out: ptr to list of apqn targets*/ 426 __u32 apqn_entries; /* in: max # of apqn entries in the list */ 427 /* out: # apqns stored into the list */ 428 }; 429 #define PKEY_APQNS4KT _IOWR(PKEY_IOCTL_MAGIC, 0x1C, struct pkey_apqns4keytype) 430 431 /* 432 * Transform a key blob into a protected key, version 3. 433 * The difference to version 2 of this ioctl is that the protected key 434 * buffer is now explicitly and not within a struct pkey_protkey any more. 435 * So this ioctl is also able to handle EP11 and CCA ECC secure keys and 436 * provide ECC protected keys. 437 * There needs to be a list of apqns given with at least one entry in there. 438 * All apqns in the list need to be exact apqns, 0xFFFF as ANY card or domain 439 * is not supported. The implementation walks through the list of apqns and 440 * tries to send the request to each apqn without any further checking (like 441 * card type or online state). If the apqn fails, simple the next one in the 442 * list is tried until success (return 0) or the end of the list is reached 443 * (return -1 with errno ENODEV). You may use the PKEY_APQNS4K ioctl to 444 * generate a list of apqns based on the key. 445 */ 446 struct pkey_kblob2pkey3 { 447 __u8 __user *key; /* in: pointer to key blob */ 448 __u32 keylen; /* in: key blob size */ 449 struct pkey_apqn __user *apqns; /* in: ptr to list of apqn targets */ 450 __u32 apqn_entries; /* in: # of apqn target list entries */ 451 __u32 pkeytype; /* out: prot key type (enum pkey_key_type) */ 452 __u32 pkeylen; /* in/out: size of pkey buffer/actual len of pkey */ 453 __u8 __user *pkey; /* in: pkey blob buffer space ptr */ 454 }; 455 #define PKEY_KBLOB2PROTK3 _IOWR(PKEY_IOCTL_MAGIC, 0x1D, struct pkey_kblob2pkey3) 456 457 #endif /* _UAPI_PKEY_H */ 458