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