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7384eb72 HF |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* | |
3 | * Copyright IBM Corp. 2019 | |
4 | * Author(s): Harald Freudenberger <freude@linux.ibm.com> | |
5 | * | |
6 | * Collection of EP11 misc functions used by zcrypt and pkey | |
7 | */ | |
8 | ||
9 | #define KMSG_COMPONENT "zcrypt" | |
10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
11 | ||
12 | #include <linux/init.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/random.h> | |
16 | #include <asm/zcrypt.h> | |
17 | #include <asm/pkey.h> | |
fa6999e3 | 18 | #include <crypto/aes.h> |
7384eb72 HF |
19 | |
20 | #include "ap_bus.h" | |
21 | #include "zcrypt_api.h" | |
22 | #include "zcrypt_debug.h" | |
23 | #include "zcrypt_msgtype6.h" | |
24 | #include "zcrypt_ep11misc.h" | |
55d0a513 | 25 | #include "zcrypt_ccamisc.h" |
7384eb72 | 26 | |
386cb81e HD |
27 | #define EP11_PINBLOB_V1_BYTES 56 |
28 | ||
55d0a513 HF |
29 | /* default iv used here */ |
30 | static const u8 def_iv[16] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, | |
31 | 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff }; | |
32 | ||
7384eb72 HF |
33 | /* ep11 card info cache */ |
34 | struct card_list_entry { | |
35 | struct list_head list; | |
36 | u16 cardnr; | |
37 | struct ep11_card_info info; | |
38 | }; | |
39 | static LIST_HEAD(card_list); | |
40 | static DEFINE_SPINLOCK(card_list_lock); | |
41 | ||
42 | static int card_cache_fetch(u16 cardnr, struct ep11_card_info *ci) | |
43 | { | |
44 | int rc = -ENOENT; | |
45 | struct card_list_entry *ptr; | |
46 | ||
47 | spin_lock_bh(&card_list_lock); | |
48 | list_for_each_entry(ptr, &card_list, list) { | |
49 | if (ptr->cardnr == cardnr) { | |
50 | memcpy(ci, &ptr->info, sizeof(*ci)); | |
51 | rc = 0; | |
52 | break; | |
53 | } | |
54 | } | |
55 | spin_unlock_bh(&card_list_lock); | |
56 | ||
57 | return rc; | |
58 | } | |
59 | ||
60 | static void card_cache_update(u16 cardnr, const struct ep11_card_info *ci) | |
61 | { | |
62 | int found = 0; | |
63 | struct card_list_entry *ptr; | |
64 | ||
65 | spin_lock_bh(&card_list_lock); | |
66 | list_for_each_entry(ptr, &card_list, list) { | |
67 | if (ptr->cardnr == cardnr) { | |
68 | memcpy(&ptr->info, ci, sizeof(*ci)); | |
69 | found = 1; | |
70 | break; | |
71 | } | |
72 | } | |
73 | if (!found) { | |
74 | ptr = kmalloc(sizeof(*ptr), GFP_ATOMIC); | |
75 | if (!ptr) { | |
76 | spin_unlock_bh(&card_list_lock); | |
77 | return; | |
78 | } | |
79 | ptr->cardnr = cardnr; | |
80 | memcpy(&ptr->info, ci, sizeof(*ci)); | |
81 | list_add(&ptr->list, &card_list); | |
82 | } | |
83 | spin_unlock_bh(&card_list_lock); | |
84 | } | |
85 | ||
86 | static void card_cache_scrub(u16 cardnr) | |
87 | { | |
88 | struct card_list_entry *ptr; | |
89 | ||
90 | spin_lock_bh(&card_list_lock); | |
91 | list_for_each_entry(ptr, &card_list, list) { | |
92 | if (ptr->cardnr == cardnr) { | |
93 | list_del(&ptr->list); | |
94 | kfree(ptr); | |
95 | break; | |
96 | } | |
97 | } | |
98 | spin_unlock_bh(&card_list_lock); | |
99 | } | |
100 | ||
101 | static void __exit card_cache_free(void) | |
102 | { | |
103 | struct card_list_entry *ptr, *pnext; | |
104 | ||
105 | spin_lock_bh(&card_list_lock); | |
106 | list_for_each_entry_safe(ptr, pnext, &card_list, list) { | |
107 | list_del(&ptr->list); | |
108 | kfree(ptr); | |
109 | } | |
110 | spin_unlock_bh(&card_list_lock); | |
111 | } | |
112 | ||
fb249ce7 HD |
113 | static int ep11_kb_split(const u8 *kb, size_t kblen, u32 kbver, |
114 | struct ep11kblob_header **kbhdr, size_t *kbhdrsize, | |
115 | u8 **kbpl, size_t *kbplsize) | |
116 | { | |
117 | struct ep11kblob_header *hdr = NULL; | |
118 | size_t hdrsize, plsize = 0; | |
119 | int rc = -EINVAL; | |
120 | u8 *pl = NULL; | |
121 | ||
122 | if (kblen < sizeof(struct ep11kblob_header)) | |
123 | goto out; | |
124 | hdr = (struct ep11kblob_header *)kb; | |
125 | ||
126 | switch (kbver) { | |
127 | case TOKVER_EP11_AES: | |
128 | /* header overlays the payload */ | |
129 | hdrsize = 0; | |
130 | break; | |
131 | case TOKVER_EP11_ECC_WITH_HEADER: | |
132 | case TOKVER_EP11_AES_WITH_HEADER: | |
133 | /* payload starts after the header */ | |
134 | hdrsize = sizeof(struct ep11kblob_header); | |
135 | break; | |
136 | default: | |
137 | goto out; | |
138 | } | |
139 | ||
140 | plsize = kblen - hdrsize; | |
141 | pl = (u8 *)kb + hdrsize; | |
142 | ||
143 | if (kbhdr) | |
144 | *kbhdr = hdr; | |
145 | if (kbhdrsize) | |
146 | *kbhdrsize = hdrsize; | |
147 | if (kbpl) | |
148 | *kbpl = pl; | |
149 | if (kbplsize) | |
150 | *kbplsize = plsize; | |
151 | ||
152 | rc = 0; | |
153 | out: | |
154 | return rc; | |
155 | } | |
156 | ||
d1fdfb0b HD |
157 | static int ep11_kb_decode(const u8 *kb, size_t kblen, |
158 | struct ep11kblob_header **kbhdr, size_t *kbhdrsize, | |
159 | struct ep11keyblob **kbpl, size_t *kbplsize) | |
160 | { | |
161 | struct ep11kblob_header *tmph, *hdr = NULL; | |
162 | size_t hdrsize = 0, plsize = 0; | |
163 | struct ep11keyblob *pl = NULL; | |
164 | int rc = -EINVAL; | |
165 | u8 *tmpp; | |
166 | ||
167 | if (kblen < sizeof(struct ep11kblob_header)) | |
168 | goto out; | |
169 | tmph = (struct ep11kblob_header *)kb; | |
170 | ||
171 | if (tmph->type != TOKTYPE_NON_CCA && | |
172 | tmph->len > kblen) | |
173 | goto out; | |
174 | ||
175 | if (ep11_kb_split(kb, kblen, tmph->version, | |
176 | &hdr, &hdrsize, &tmpp, &plsize)) | |
177 | goto out; | |
178 | ||
179 | if (plsize < sizeof(struct ep11keyblob)) | |
180 | goto out; | |
181 | ||
182 | if (!is_ep11_keyblob(tmpp)) | |
183 | goto out; | |
184 | ||
185 | pl = (struct ep11keyblob *)tmpp; | |
186 | plsize = hdr->len - hdrsize; | |
187 | ||
188 | if (kbhdr) | |
189 | *kbhdr = hdr; | |
190 | if (kbhdrsize) | |
191 | *kbhdrsize = hdrsize; | |
192 | if (kbpl) | |
193 | *kbpl = pl; | |
194 | if (kbplsize) | |
195 | *kbplsize = plsize; | |
196 | ||
197 | rc = 0; | |
198 | out: | |
199 | return rc; | |
200 | } | |
201 | ||
202 | /* | |
203 | * For valid ep11 keyblobs, returns a reference to the wrappingkey verification | |
204 | * pattern. Otherwise NULL. | |
205 | */ | |
206 | const u8 *ep11_kb_wkvp(const u8 *keyblob, size_t keybloblen) | |
207 | { | |
208 | struct ep11keyblob *kb; | |
209 | ||
210 | if (ep11_kb_decode(keyblob, keybloblen, NULL, NULL, &kb, NULL)) | |
211 | return NULL; | |
212 | return kb->wkvp; | |
213 | } | |
214 | EXPORT_SYMBOL(ep11_kb_wkvp); | |
215 | ||
55d0a513 | 216 | /* |
fa6999e3 | 217 | * Simple check if the key blob is a valid EP11 AES key blob with header. |
55d0a513 | 218 | */ |
fa6999e3 HF |
219 | int ep11_check_aes_key_with_hdr(debug_info_t *dbg, int dbflvl, |
220 | const u8 *key, size_t keylen, int checkcpacfexp) | |
221 | { | |
2004b57c HF |
222 | struct ep11kblob_header *hdr = (struct ep11kblob_header *)key; |
223 | struct ep11keyblob *kb = (struct ep11keyblob *)(key + sizeof(*hdr)); | |
fa6999e3 HF |
224 | |
225 | #define DBF(...) debug_sprintf_event(dbg, dbflvl, ##__VA_ARGS__) | |
226 | ||
227 | if (keylen < sizeof(*hdr) + sizeof(*kb)) { | |
228 | DBF("%s key check failed, keylen %zu < %zu\n", | |
229 | __func__, keylen, sizeof(*hdr) + sizeof(*kb)); | |
230 | return -EINVAL; | |
231 | } | |
232 | ||
233 | if (hdr->type != TOKTYPE_NON_CCA) { | |
234 | if (dbg) | |
235 | DBF("%s key check failed, type 0x%02x != 0x%02x\n", | |
2004b57c | 236 | __func__, (int)hdr->type, TOKTYPE_NON_CCA); |
fa6999e3 HF |
237 | return -EINVAL; |
238 | } | |
239 | if (hdr->hver != 0x00) { | |
240 | if (dbg) | |
241 | DBF("%s key check failed, header version 0x%02x != 0x00\n", | |
2004b57c | 242 | __func__, (int)hdr->hver); |
fa6999e3 HF |
243 | return -EINVAL; |
244 | } | |
245 | if (hdr->version != TOKVER_EP11_AES_WITH_HEADER) { | |
246 | if (dbg) | |
247 | DBF("%s key check failed, version 0x%02x != 0x%02x\n", | |
2004b57c | 248 | __func__, (int)hdr->version, TOKVER_EP11_AES_WITH_HEADER); |
fa6999e3 HF |
249 | return -EINVAL; |
250 | } | |
251 | if (hdr->len > keylen) { | |
252 | if (dbg) | |
253 | DBF("%s key check failed, header len %d keylen %zu mismatch\n", | |
2004b57c | 254 | __func__, (int)hdr->len, keylen); |
fa6999e3 HF |
255 | return -EINVAL; |
256 | } | |
257 | if (hdr->len < sizeof(*hdr) + sizeof(*kb)) { | |
258 | if (dbg) | |
259 | DBF("%s key check failed, header len %d < %zu\n", | |
2004b57c | 260 | __func__, (int)hdr->len, sizeof(*hdr) + sizeof(*kb)); |
fa6999e3 HF |
261 | return -EINVAL; |
262 | } | |
263 | ||
264 | if (kb->version != EP11_STRUCT_MAGIC) { | |
265 | if (dbg) | |
266 | DBF("%s key check failed, blob magic 0x%04x != 0x%04x\n", | |
2004b57c | 267 | __func__, (int)kb->version, EP11_STRUCT_MAGIC); |
fa6999e3 HF |
268 | return -EINVAL; |
269 | } | |
270 | if (checkcpacfexp && !(kb->attr & EP11_BLOB_PKEY_EXTRACTABLE)) { | |
271 | if (dbg) | |
272 | DBF("%s key check failed, PKEY_EXTRACTABLE is off\n", | |
273 | __func__); | |
274 | return -EINVAL; | |
275 | } | |
276 | ||
277 | #undef DBF | |
278 | ||
279 | return 0; | |
280 | } | |
281 | EXPORT_SYMBOL(ep11_check_aes_key_with_hdr); | |
282 | ||
283 | /* | |
284 | * Simple check if the key blob is a valid EP11 ECC key blob with header. | |
285 | */ | |
286 | int ep11_check_ecc_key_with_hdr(debug_info_t *dbg, int dbflvl, | |
287 | const u8 *key, size_t keylen, int checkcpacfexp) | |
288 | { | |
2004b57c HF |
289 | struct ep11kblob_header *hdr = (struct ep11kblob_header *)key; |
290 | struct ep11keyblob *kb = (struct ep11keyblob *)(key + sizeof(*hdr)); | |
fa6999e3 HF |
291 | |
292 | #define DBF(...) debug_sprintf_event(dbg, dbflvl, ##__VA_ARGS__) | |
293 | ||
294 | if (keylen < sizeof(*hdr) + sizeof(*kb)) { | |
295 | DBF("%s key check failed, keylen %zu < %zu\n", | |
296 | __func__, keylen, sizeof(*hdr) + sizeof(*kb)); | |
297 | return -EINVAL; | |
298 | } | |
299 | ||
300 | if (hdr->type != TOKTYPE_NON_CCA) { | |
301 | if (dbg) | |
302 | DBF("%s key check failed, type 0x%02x != 0x%02x\n", | |
2004b57c | 303 | __func__, (int)hdr->type, TOKTYPE_NON_CCA); |
fa6999e3 HF |
304 | return -EINVAL; |
305 | } | |
306 | if (hdr->hver != 0x00) { | |
307 | if (dbg) | |
308 | DBF("%s key check failed, header version 0x%02x != 0x00\n", | |
2004b57c | 309 | __func__, (int)hdr->hver); |
fa6999e3 HF |
310 | return -EINVAL; |
311 | } | |
312 | if (hdr->version != TOKVER_EP11_ECC_WITH_HEADER) { | |
313 | if (dbg) | |
314 | DBF("%s key check failed, version 0x%02x != 0x%02x\n", | |
2004b57c | 315 | __func__, (int)hdr->version, TOKVER_EP11_ECC_WITH_HEADER); |
fa6999e3 HF |
316 | return -EINVAL; |
317 | } | |
318 | if (hdr->len > keylen) { | |
319 | if (dbg) | |
320 | DBF("%s key check failed, header len %d keylen %zu mismatch\n", | |
2004b57c | 321 | __func__, (int)hdr->len, keylen); |
fa6999e3 HF |
322 | return -EINVAL; |
323 | } | |
324 | if (hdr->len < sizeof(*hdr) + sizeof(*kb)) { | |
325 | if (dbg) | |
326 | DBF("%s key check failed, header len %d < %zu\n", | |
2004b57c | 327 | __func__, (int)hdr->len, sizeof(*hdr) + sizeof(*kb)); |
fa6999e3 HF |
328 | return -EINVAL; |
329 | } | |
330 | ||
331 | if (kb->version != EP11_STRUCT_MAGIC) { | |
332 | if (dbg) | |
333 | DBF("%s key check failed, blob magic 0x%04x != 0x%04x\n", | |
2004b57c | 334 | __func__, (int)kb->version, EP11_STRUCT_MAGIC); |
fa6999e3 HF |
335 | return -EINVAL; |
336 | } | |
337 | if (checkcpacfexp && !(kb->attr & EP11_BLOB_PKEY_EXTRACTABLE)) { | |
338 | if (dbg) | |
339 | DBF("%s key check failed, PKEY_EXTRACTABLE is off\n", | |
340 | __func__); | |
341 | return -EINVAL; | |
342 | } | |
343 | ||
344 | #undef DBF | |
345 | ||
346 | return 0; | |
347 | } | |
348 | EXPORT_SYMBOL(ep11_check_ecc_key_with_hdr); | |
349 | ||
350 | /* | |
351 | * Simple check if the key blob is a valid EP11 AES key blob with | |
352 | * the header in the session field (old style EP11 AES key). | |
353 | */ | |
354 | int ep11_check_aes_key(debug_info_t *dbg, int dbflvl, | |
355 | const u8 *key, size_t keylen, int checkcpacfexp) | |
55d0a513 | 356 | { |
2004b57c | 357 | struct ep11keyblob *kb = (struct ep11keyblob *)key; |
55d0a513 HF |
358 | |
359 | #define DBF(...) debug_sprintf_event(dbg, dbflvl, ##__VA_ARGS__) | |
360 | ||
fa6999e3 HF |
361 | if (keylen < sizeof(*kb)) { |
362 | DBF("%s key check failed, keylen %zu < %zu\n", | |
363 | __func__, keylen, sizeof(*kb)); | |
364 | return -EINVAL; | |
365 | } | |
366 | ||
55d0a513 HF |
367 | if (kb->head.type != TOKTYPE_NON_CCA) { |
368 | if (dbg) | |
369 | DBF("%s key check failed, type 0x%02x != 0x%02x\n", | |
2004b57c | 370 | __func__, (int)kb->head.type, TOKTYPE_NON_CCA); |
55d0a513 HF |
371 | return -EINVAL; |
372 | } | |
373 | if (kb->head.version != TOKVER_EP11_AES) { | |
374 | if (dbg) | |
375 | DBF("%s key check failed, version 0x%02x != 0x%02x\n", | |
2004b57c | 376 | __func__, (int)kb->head.version, TOKVER_EP11_AES); |
55d0a513 HF |
377 | return -EINVAL; |
378 | } | |
fa6999e3 | 379 | if (kb->head.len > keylen) { |
55d0a513 | 380 | if (dbg) |
fa6999e3 | 381 | DBF("%s key check failed, header len %d keylen %zu mismatch\n", |
2004b57c | 382 | __func__, (int)kb->head.len, keylen); |
55d0a513 HF |
383 | return -EINVAL; |
384 | } | |
fa6999e3 | 385 | if (kb->head.len < sizeof(*kb)) { |
55d0a513 | 386 | if (dbg) |
fa6999e3 | 387 | DBF("%s key check failed, header len %d < %zu\n", |
2004b57c | 388 | __func__, (int)kb->head.len, sizeof(*kb)); |
55d0a513 HF |
389 | return -EINVAL; |
390 | } | |
fa6999e3 HF |
391 | |
392 | if (kb->version != EP11_STRUCT_MAGIC) { | |
393 | if (dbg) | |
394 | DBF("%s key check failed, blob magic 0x%04x != 0x%04x\n", | |
2004b57c | 395 | __func__, (int)kb->version, EP11_STRUCT_MAGIC); |
55d0a513 HF |
396 | return -EINVAL; |
397 | } | |
fa6999e3 | 398 | if (checkcpacfexp && !(kb->attr & EP11_BLOB_PKEY_EXTRACTABLE)) { |
55d0a513 | 399 | if (dbg) |
fa6999e3 | 400 | DBF("%s key check failed, PKEY_EXTRACTABLE is off\n", |
55d0a513 HF |
401 | __func__); |
402 | return -EINVAL; | |
403 | } | |
fa6999e3 | 404 | |
55d0a513 HF |
405 | #undef DBF |
406 | ||
407 | return 0; | |
408 | } | |
fa6999e3 | 409 | EXPORT_SYMBOL(ep11_check_aes_key); |
55d0a513 | 410 | |
7384eb72 HF |
411 | /* |
412 | * Allocate and prepare ep11 cprb plus additional payload. | |
413 | */ | |
55d0a513 | 414 | static inline struct ep11_cprb *alloc_cprb(size_t payload_len) |
7384eb72 HF |
415 | { |
416 | size_t len = sizeof(struct ep11_cprb) + payload_len; | |
417 | struct ep11_cprb *cprb; | |
418 | ||
79d6c502 | 419 | cprb = kzalloc(len, GFP_KERNEL); |
7384eb72 HF |
420 | if (!cprb) |
421 | return NULL; | |
422 | ||
7384eb72 HF |
423 | cprb->cprb_len = sizeof(struct ep11_cprb); |
424 | cprb->cprb_ver_id = 0x04; | |
425 | memcpy(cprb->func_id, "T4", 2); | |
426 | cprb->ret_code = 0xFFFFFFFF; | |
427 | cprb->payload_len = payload_len; | |
428 | ||
429 | return cprb; | |
430 | } | |
431 | ||
55d0a513 HF |
432 | /* |
433 | * Some helper functions related to ASN1 encoding. | |
434 | * Limited to length info <= 2 byte. | |
435 | */ | |
436 | ||
437 | #define ASN1TAGLEN(x) (2 + (x) + ((x) > 127 ? 1 : 0) + ((x) > 255 ? 1 : 0)) | |
438 | ||
439 | static int asn1tag_write(u8 *ptr, u8 tag, const u8 *pvalue, u16 valuelen) | |
440 | { | |
441 | ptr[0] = tag; | |
442 | if (valuelen > 255) { | |
443 | ptr[1] = 0x82; | |
444 | *((u16 *)(ptr + 2)) = valuelen; | |
445 | memcpy(ptr + 4, pvalue, valuelen); | |
446 | return 4 + valuelen; | |
447 | } | |
448 | if (valuelen > 127) { | |
449 | ptr[1] = 0x81; | |
2004b57c | 450 | ptr[2] = (u8)valuelen; |
55d0a513 HF |
451 | memcpy(ptr + 3, pvalue, valuelen); |
452 | return 3 + valuelen; | |
453 | } | |
2004b57c | 454 | ptr[1] = (u8)valuelen; |
55d0a513 HF |
455 | memcpy(ptr + 2, pvalue, valuelen); |
456 | return 2 + valuelen; | |
457 | } | |
458 | ||
459 | /* EP11 payload > 127 bytes starts with this struct */ | |
460 | struct pl_head { | |
461 | u8 tag; | |
462 | u8 lenfmt; | |
463 | u16 len; | |
464 | u8 func_tag; | |
465 | u8 func_len; | |
466 | u32 func; | |
467 | u8 dom_tag; | |
468 | u8 dom_len; | |
469 | u32 dom; | |
470 | } __packed; | |
471 | ||
472 | /* prep ep11 payload head helper function */ | |
473 | static inline void prep_head(struct pl_head *h, | |
474 | size_t pl_size, int api, int func) | |
475 | { | |
476 | h->tag = 0x30; | |
477 | h->lenfmt = 0x82; | |
478 | h->len = pl_size - 4; | |
479 | h->func_tag = 0x04; | |
480 | h->func_len = sizeof(u32); | |
481 | h->func = (api << 16) + func; | |
482 | h->dom_tag = 0x04; | |
483 | h->dom_len = sizeof(u32); | |
484 | } | |
485 | ||
486 | /* prep urb helper function */ | |
487 | static inline void prep_urb(struct ep11_urb *u, | |
488 | struct ep11_target_dev *t, int nt, | |
489 | struct ep11_cprb *req, size_t req_len, | |
490 | struct ep11_cprb *rep, size_t rep_len) | |
491 | { | |
2004b57c | 492 | u->targets = (u8 __user *)t; |
55d0a513 | 493 | u->targets_num = nt; |
2004b57c | 494 | u->req = (u8 __user *)req; |
55d0a513 | 495 | u->req_len = req_len; |
2004b57c | 496 | u->resp = (u8 __user *)rep; |
55d0a513 HF |
497 | u->resp_len = rep_len; |
498 | } | |
499 | ||
500 | /* Check ep11 reply payload, return 0 or suggested errno value. */ | |
501 | static int check_reply_pl(const u8 *pl, const char *func) | |
502 | { | |
503 | int len; | |
504 | u32 ret; | |
505 | ||
506 | /* start tag */ | |
507 | if (*pl++ != 0x30) { | |
88e4c0da | 508 | ZCRYPT_DBF_ERR("%s reply start tag mismatch\n", func); |
55d0a513 HF |
509 | return -EIO; |
510 | } | |
511 | ||
512 | /* payload length format */ | |
513 | if (*pl < 127) { | |
514 | len = *pl; | |
515 | pl++; | |
516 | } else if (*pl == 0x81) { | |
517 | pl++; | |
518 | len = *pl; | |
519 | pl++; | |
520 | } else if (*pl == 0x82) { | |
521 | pl++; | |
522 | len = *((u16 *)pl); | |
523 | pl += 2; | |
524 | } else { | |
88e4c0da HF |
525 | ZCRYPT_DBF_ERR("%s reply start tag lenfmt mismatch 0x%02hhx\n", |
526 | func, *pl); | |
55d0a513 HF |
527 | return -EIO; |
528 | } | |
529 | ||
530 | /* len should cover at least 3 fields with 32 bit value each */ | |
531 | if (len < 3 * 6) { | |
88e4c0da | 532 | ZCRYPT_DBF_ERR("%s reply length %d too small\n", func, len); |
55d0a513 HF |
533 | return -EIO; |
534 | } | |
535 | ||
536 | /* function tag, length and value */ | |
537 | if (pl[0] != 0x04 || pl[1] != 0x04) { | |
88e4c0da | 538 | ZCRYPT_DBF_ERR("%s function tag or length mismatch\n", func); |
55d0a513 HF |
539 | return -EIO; |
540 | } | |
541 | pl += 6; | |
542 | ||
543 | /* dom tag, length and value */ | |
544 | if (pl[0] != 0x04 || pl[1] != 0x04) { | |
88e4c0da | 545 | ZCRYPT_DBF_ERR("%s dom tag or length mismatch\n", func); |
55d0a513 HF |
546 | return -EIO; |
547 | } | |
548 | pl += 6; | |
549 | ||
550 | /* return value tag, length and value */ | |
551 | if (pl[0] != 0x04 || pl[1] != 0x04) { | |
88e4c0da HF |
552 | ZCRYPT_DBF_ERR("%s return value tag or length mismatch\n", |
553 | func); | |
55d0a513 HF |
554 | return -EIO; |
555 | } | |
556 | pl += 2; | |
557 | ret = *((u32 *)pl); | |
558 | if (ret != 0) { | |
a4499998 | 559 | ZCRYPT_DBF_ERR("%s return value 0x%08x != 0\n", func, ret); |
55d0a513 HF |
560 | return -EIO; |
561 | } | |
562 | ||
563 | return 0; | |
564 | } | |
565 | ||
c0e983b6 HF |
566 | /* Check ep11 reply cprb, return 0 or suggested errno value. */ |
567 | static int check_reply_cprb(const struct ep11_cprb *rep, const char *func) | |
568 | { | |
569 | /* check ep11 reply return code field */ | |
570 | if (rep->ret_code) { | |
571 | ZCRYPT_DBF_ERR("%s ep11 reply ret_code=0x%08x\n", __func__, | |
572 | rep->ret_code); | |
573 | if (rep->ret_code == 0x000c0003) | |
574 | return -EBUSY; | |
575 | else | |
576 | return -EIO; | |
577 | } | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
7384eb72 HF |
582 | /* |
583 | * Helper function which does an ep11 query with given query type. | |
584 | */ | |
585 | static int ep11_query_info(u16 cardnr, u16 domain, u32 query_type, | |
586 | size_t buflen, u8 *buf) | |
587 | { | |
588 | struct ep11_info_req_pl { | |
55d0a513 | 589 | struct pl_head head; |
7384eb72 HF |
590 | u8 query_type_tag; |
591 | u8 query_type_len; | |
592 | u32 query_type; | |
593 | u8 query_subtype_tag; | |
594 | u8 query_subtype_len; | |
595 | u32 query_subtype; | |
596 | } __packed * req_pl; | |
597 | struct ep11_info_rep_pl { | |
55d0a513 | 598 | struct pl_head head; |
7384eb72 HF |
599 | u8 rc_tag; |
600 | u8 rc_len; | |
601 | u32 rc; | |
602 | u8 data_tag; | |
603 | u8 data_lenfmt; | |
604 | u16 data_len; | |
605 | } __packed * rep_pl; | |
606 | struct ep11_cprb *req = NULL, *rep = NULL; | |
607 | struct ep11_target_dev target; | |
608 | struct ep11_urb *urb = NULL; | |
386cb81e | 609 | int api = EP11_API_V1, rc = -ENOMEM; |
7384eb72 HF |
610 | |
611 | /* request cprb and payload */ | |
55d0a513 | 612 | req = alloc_cprb(sizeof(struct ep11_info_req_pl)); |
7384eb72 HF |
613 | if (!req) |
614 | goto out; | |
2004b57c | 615 | req_pl = (struct ep11_info_req_pl *)(((u8 *)req) + sizeof(*req)); |
55d0a513 | 616 | prep_head(&req_pl->head, sizeof(*req_pl), api, 38); /* get xcp info */ |
7384eb72 HF |
617 | req_pl->query_type_tag = 0x04; |
618 | req_pl->query_type_len = sizeof(u32); | |
619 | req_pl->query_type = query_type; | |
620 | req_pl->query_subtype_tag = 0x04; | |
621 | req_pl->query_subtype_len = sizeof(u32); | |
622 | ||
623 | /* reply cprb and payload */ | |
55d0a513 | 624 | rep = alloc_cprb(sizeof(struct ep11_info_rep_pl) + buflen); |
7384eb72 HF |
625 | if (!rep) |
626 | goto out; | |
2004b57c | 627 | rep_pl = (struct ep11_info_rep_pl *)(((u8 *)rep) + sizeof(*rep)); |
7384eb72 HF |
628 | |
629 | /* urb and target */ | |
2004b57c | 630 | urb = kmalloc(sizeof(*urb), GFP_KERNEL); |
7384eb72 HF |
631 | if (!urb) |
632 | goto out; | |
633 | target.ap_id = cardnr; | |
634 | target.dom_id = domain; | |
55d0a513 HF |
635 | prep_urb(urb, &target, 1, |
636 | req, sizeof(*req) + sizeof(*req_pl), | |
637 | rep, sizeof(*rep) + sizeof(*rep_pl) + buflen); | |
7384eb72 | 638 | |
52f72feb | 639 | rc = zcrypt_send_ep11_cprb(urb); |
7384eb72 | 640 | if (rc) { |
88e4c0da HF |
641 | ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n", |
642 | __func__, (int)cardnr, (int)domain, rc); | |
7384eb72 HF |
643 | goto out; |
644 | } | |
645 | ||
c0e983b6 HF |
646 | /* check ep11 reply cprb */ |
647 | rc = check_reply_cprb(rep, __func__); | |
648 | if (rc) | |
649 | goto out; | |
650 | ||
651 | /* check payload */ | |
55d0a513 HF |
652 | rc = check_reply_pl((u8 *)rep_pl, __func__); |
653 | if (rc) | |
7384eb72 | 654 | goto out; |
55d0a513 | 655 | if (rep_pl->data_tag != 0x04 || rep_pl->data_lenfmt != 0x82) { |
88e4c0da | 656 | ZCRYPT_DBF_ERR("%s unknown reply data format\n", __func__); |
55d0a513 | 657 | rc = -EIO; |
7384eb72 HF |
658 | goto out; |
659 | } | |
660 | if (rep_pl->data_len > buflen) { | |
88e4c0da HF |
661 | ZCRYPT_DBF_ERR("%s mismatch between reply data len and buffer len\n", |
662 | __func__); | |
55d0a513 | 663 | rc = -ENOSPC; |
7384eb72 HF |
664 | goto out; |
665 | } | |
666 | ||
2004b57c | 667 | memcpy(buf, ((u8 *)rep_pl) + sizeof(*rep_pl), rep_pl->data_len); |
7384eb72 HF |
668 | |
669 | out: | |
670 | kfree(req); | |
671 | kfree(rep); | |
672 | kfree(urb); | |
673 | return rc; | |
674 | } | |
675 | ||
676 | /* | |
677 | * Provide information about an EP11 card. | |
678 | */ | |
679 | int ep11_get_card_info(u16 card, struct ep11_card_info *info, int verify) | |
680 | { | |
681 | int rc; | |
682 | struct ep11_module_query_info { | |
683 | u32 API_ord_nr; | |
684 | u32 firmware_id; | |
685 | u8 FW_major_vers; | |
686 | u8 FW_minor_vers; | |
687 | u8 CSP_major_vers; | |
688 | u8 CSP_minor_vers; | |
689 | u8 fwid[32]; | |
690 | u8 xcp_config_hash[32]; | |
691 | u8 CSP_config_hash[32]; | |
692 | u8 serial[16]; | |
693 | u8 module_date_time[16]; | |
694 | u64 op_mode; | |
695 | u32 PKCS11_flags; | |
696 | u32 ext_flags; | |
697 | u32 domains; | |
698 | u32 sym_state_bytes; | |
699 | u32 digest_state_bytes; | |
700 | u32 pin_blob_bytes; | |
701 | u32 SPKI_bytes; | |
702 | u32 priv_key_blob_bytes; | |
703 | u32 sym_blob_bytes; | |
704 | u32 max_payload_bytes; | |
705 | u32 CP_profile_bytes; | |
706 | u32 max_CP_index; | |
707 | } __packed * pmqi = NULL; | |
708 | ||
709 | rc = card_cache_fetch(card, info); | |
710 | if (rc || verify) { | |
711 | pmqi = kmalloc(sizeof(*pmqi), GFP_KERNEL); | |
712 | if (!pmqi) | |
713 | return -ENOMEM; | |
714 | rc = ep11_query_info(card, AUTOSEL_DOM, | |
715 | 0x01 /* module info query */, | |
2004b57c | 716 | sizeof(*pmqi), (u8 *)pmqi); |
7384eb72 HF |
717 | if (rc) { |
718 | if (rc == -ENODEV) | |
719 | card_cache_scrub(card); | |
720 | goto out; | |
721 | } | |
722 | memset(info, 0, sizeof(*info)); | |
723 | info->API_ord_nr = pmqi->API_ord_nr; | |
724 | info->FW_version = | |
725 | (pmqi->FW_major_vers << 8) + pmqi->FW_minor_vers; | |
726 | memcpy(info->serial, pmqi->serial, sizeof(info->serial)); | |
727 | info->op_mode = pmqi->op_mode; | |
728 | card_cache_update(card, info); | |
729 | } | |
730 | ||
731 | out: | |
732 | kfree(pmqi); | |
733 | return rc; | |
734 | } | |
735 | EXPORT_SYMBOL(ep11_get_card_info); | |
736 | ||
737 | /* | |
738 | * Provide information about a domain within an EP11 card. | |
739 | */ | |
740 | int ep11_get_domain_info(u16 card, u16 domain, struct ep11_domain_info *info) | |
741 | { | |
742 | int rc; | |
743 | struct ep11_domain_query_info { | |
744 | u32 dom_index; | |
745 | u8 cur_WK_VP[32]; | |
746 | u8 new_WK_VP[32]; | |
747 | u32 dom_flags; | |
748 | u64 op_mode; | |
749 | } __packed * p_dom_info; | |
750 | ||
751 | p_dom_info = kmalloc(sizeof(*p_dom_info), GFP_KERNEL); | |
752 | if (!p_dom_info) | |
753 | return -ENOMEM; | |
754 | ||
755 | rc = ep11_query_info(card, domain, 0x03 /* domain info query */, | |
2004b57c | 756 | sizeof(*p_dom_info), (u8 *)p_dom_info); |
7384eb72 HF |
757 | if (rc) |
758 | goto out; | |
759 | ||
760 | memset(info, 0, sizeof(*info)); | |
761 | info->cur_wk_state = '0'; | |
762 | info->new_wk_state = '0'; | |
763 | if (p_dom_info->dom_flags & 0x10 /* left imprint mode */) { | |
764 | if (p_dom_info->dom_flags & 0x02 /* cur wk valid */) { | |
765 | info->cur_wk_state = '1'; | |
766 | memcpy(info->cur_wkvp, p_dom_info->cur_WK_VP, 32); | |
767 | } | |
2004b57c HF |
768 | if (p_dom_info->dom_flags & 0x04 || /* new wk present */ |
769 | p_dom_info->dom_flags & 0x08 /* new wk committed */) { | |
7384eb72 HF |
770 | info->new_wk_state = |
771 | p_dom_info->dom_flags & 0x08 ? '2' : '1'; | |
772 | memcpy(info->new_wkvp, p_dom_info->new_WK_VP, 32); | |
773 | } | |
774 | } | |
775 | info->op_mode = p_dom_info->op_mode; | |
776 | ||
777 | out: | |
778 | kfree(p_dom_info); | |
779 | return rc; | |
780 | } | |
781 | EXPORT_SYMBOL(ep11_get_domain_info); | |
782 | ||
55d0a513 HF |
783 | /* |
784 | * Default EP11 AES key generate attributes, used when no keygenflags given: | |
785 | * XCP_BLOB_ENCRYPT | XCP_BLOB_DECRYPT | XCP_BLOB_PROTKEY_EXTRACTABLE | |
786 | */ | |
787 | #define KEY_ATTR_DEFAULTS 0x00200c00 | |
788 | ||
fb249ce7 HD |
789 | static int _ep11_genaeskey(u16 card, u16 domain, |
790 | u32 keybitsize, u32 keygenflags, | |
791 | u8 *keybuf, size_t *keybufsize) | |
55d0a513 HF |
792 | { |
793 | struct keygen_req_pl { | |
794 | struct pl_head head; | |
795 | u8 var_tag; | |
796 | u8 var_len; | |
797 | u32 var; | |
798 | u8 keybytes_tag; | |
799 | u8 keybytes_len; | |
800 | u32 keybytes; | |
801 | u8 mech_tag; | |
802 | u8 mech_len; | |
803 | u32 mech; | |
804 | u8 attr_tag; | |
805 | u8 attr_len; | |
806 | u32 attr_header; | |
807 | u32 attr_bool_mask; | |
808 | u32 attr_bool_bits; | |
809 | u32 attr_val_len_type; | |
810 | u32 attr_val_len_value; | |
386cb81e | 811 | /* followed by empty pin tag or empty pinblob tag */ |
55d0a513 HF |
812 | } __packed * req_pl; |
813 | struct keygen_rep_pl { | |
814 | struct pl_head head; | |
815 | u8 rc_tag; | |
816 | u8 rc_len; | |
817 | u32 rc; | |
818 | u8 data_tag; | |
819 | u8 data_lenfmt; | |
820 | u16 data_len; | |
821 | u8 data[512]; | |
822 | } __packed * rep_pl; | |
823 | struct ep11_cprb *req = NULL, *rep = NULL; | |
386cb81e | 824 | size_t req_pl_size, pinblob_size = 0; |
55d0a513 HF |
825 | struct ep11_target_dev target; |
826 | struct ep11_urb *urb = NULL; | |
55d0a513 | 827 | int api, rc = -ENOMEM; |
386cb81e | 828 | u8 *p; |
55d0a513 HF |
829 | |
830 | switch (keybitsize) { | |
831 | case 128: | |
832 | case 192: | |
833 | case 256: | |
834 | break; | |
835 | default: | |
88e4c0da HF |
836 | ZCRYPT_DBF_ERR("%s unknown/unsupported keybitsize %d\n", |
837 | __func__, keybitsize); | |
55d0a513 HF |
838 | rc = -EINVAL; |
839 | goto out; | |
840 | } | |
841 | ||
842 | /* request cprb and payload */ | |
386cb81e HD |
843 | api = (!keygenflags || keygenflags & 0x00200000) ? |
844 | EP11_API_V4 : EP11_API_V1; | |
845 | if (ap_is_se_guest()) { | |
846 | /* | |
847 | * genkey within SE environment requires API ordinal 6 | |
848 | * with empty pinblob | |
849 | */ | |
850 | api = EP11_API_V6; | |
851 | pinblob_size = EP11_PINBLOB_V1_BYTES; | |
852 | } | |
853 | req_pl_size = sizeof(struct keygen_req_pl) + ASN1TAGLEN(pinblob_size); | |
854 | req = alloc_cprb(req_pl_size); | |
55d0a513 HF |
855 | if (!req) |
856 | goto out; | |
2004b57c | 857 | req_pl = (struct keygen_req_pl *)(((u8 *)req) + sizeof(*req)); |
386cb81e | 858 | prep_head(&req_pl->head, req_pl_size, api, 21); /* GenerateKey */ |
55d0a513 HF |
859 | req_pl->var_tag = 0x04; |
860 | req_pl->var_len = sizeof(u32); | |
861 | req_pl->keybytes_tag = 0x04; | |
862 | req_pl->keybytes_len = sizeof(u32); | |
863 | req_pl->keybytes = keybitsize / 8; | |
864 | req_pl->mech_tag = 0x04; | |
865 | req_pl->mech_len = sizeof(u32); | |
866 | req_pl->mech = 0x00001080; /* CKM_AES_KEY_GEN */ | |
867 | req_pl->attr_tag = 0x04; | |
868 | req_pl->attr_len = 5 * sizeof(u32); | |
869 | req_pl->attr_header = 0x10010000; | |
870 | req_pl->attr_bool_mask = keygenflags ? keygenflags : KEY_ATTR_DEFAULTS; | |
871 | req_pl->attr_bool_bits = keygenflags ? keygenflags : KEY_ATTR_DEFAULTS; | |
872 | req_pl->attr_val_len_type = 0x00000161; /* CKA_VALUE_LEN */ | |
873 | req_pl->attr_val_len_value = keybitsize / 8; | |
386cb81e HD |
874 | p = ((u8 *)req_pl) + sizeof(*req_pl); |
875 | /* pin tag */ | |
876 | *p++ = 0x04; | |
877 | *p++ = pinblob_size; | |
55d0a513 HF |
878 | |
879 | /* reply cprb and payload */ | |
880 | rep = alloc_cprb(sizeof(struct keygen_rep_pl)); | |
881 | if (!rep) | |
882 | goto out; | |
2004b57c | 883 | rep_pl = (struct keygen_rep_pl *)(((u8 *)rep) + sizeof(*rep)); |
55d0a513 HF |
884 | |
885 | /* urb and target */ | |
2004b57c | 886 | urb = kmalloc(sizeof(*urb), GFP_KERNEL); |
55d0a513 HF |
887 | if (!urb) |
888 | goto out; | |
889 | target.ap_id = card; | |
890 | target.dom_id = domain; | |
891 | prep_urb(urb, &target, 1, | |
386cb81e | 892 | req, sizeof(*req) + req_pl_size, |
55d0a513 HF |
893 | rep, sizeof(*rep) + sizeof(*rep_pl)); |
894 | ||
52f72feb | 895 | rc = zcrypt_send_ep11_cprb(urb); |
55d0a513 | 896 | if (rc) { |
88e4c0da HF |
897 | ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n", |
898 | __func__, (int)card, (int)domain, rc); | |
55d0a513 HF |
899 | goto out; |
900 | } | |
901 | ||
c0e983b6 HF |
902 | /* check ep11 reply cprb */ |
903 | rc = check_reply_cprb(rep, __func__); | |
904 | if (rc) | |
905 | goto out; | |
906 | ||
907 | /* check payload */ | |
55d0a513 HF |
908 | rc = check_reply_pl((u8 *)rep_pl, __func__); |
909 | if (rc) | |
910 | goto out; | |
911 | if (rep_pl->data_tag != 0x04 || rep_pl->data_lenfmt != 0x82) { | |
88e4c0da | 912 | ZCRYPT_DBF_ERR("%s unknown reply data format\n", __func__); |
55d0a513 HF |
913 | rc = -EIO; |
914 | goto out; | |
915 | } | |
916 | if (rep_pl->data_len > *keybufsize) { | |
88e4c0da HF |
917 | ZCRYPT_DBF_ERR("%s mismatch reply data len / key buffer len\n", |
918 | __func__); | |
55d0a513 HF |
919 | rc = -ENOSPC; |
920 | goto out; | |
921 | } | |
922 | ||
fb249ce7 | 923 | /* copy key blob */ |
55d0a513 HF |
924 | memcpy(keybuf, rep_pl->data, rep_pl->data_len); |
925 | *keybufsize = rep_pl->data_len; | |
55d0a513 HF |
926 | |
927 | out: | |
928 | kfree(req); | |
929 | kfree(rep); | |
930 | kfree(urb); | |
931 | return rc; | |
932 | } | |
fb249ce7 HD |
933 | |
934 | int ep11_genaeskey(u16 card, u16 domain, u32 keybitsize, u32 keygenflags, | |
935 | u8 *keybuf, size_t *keybufsize, u32 keybufver) | |
936 | { | |
937 | struct ep11kblob_header *hdr; | |
938 | size_t hdr_size, pl_size; | |
939 | u8 *pl; | |
940 | int rc; | |
941 | ||
942 | switch (keybufver) { | |
943 | case TOKVER_EP11_AES: | |
944 | case TOKVER_EP11_AES_WITH_HEADER: | |
945 | break; | |
946 | default: | |
947 | return -EINVAL; | |
948 | } | |
949 | ||
950 | rc = ep11_kb_split(keybuf, *keybufsize, keybufver, | |
951 | &hdr, &hdr_size, &pl, &pl_size); | |
952 | if (rc) | |
953 | return rc; | |
954 | ||
955 | rc = _ep11_genaeskey(card, domain, keybitsize, keygenflags, | |
956 | pl, &pl_size); | |
957 | if (rc) | |
958 | return rc; | |
959 | ||
960 | *keybufsize = hdr_size + pl_size; | |
961 | ||
962 | /* update header information */ | |
963 | hdr->type = TOKTYPE_NON_CCA; | |
964 | hdr->len = *keybufsize; | |
965 | hdr->version = keybufver; | |
966 | hdr->bitlen = keybitsize; | |
967 | ||
968 | return 0; | |
969 | } | |
55d0a513 HF |
970 | EXPORT_SYMBOL(ep11_genaeskey); |
971 | ||
972 | static int ep11_cryptsingle(u16 card, u16 domain, | |
973 | u16 mode, u32 mech, const u8 *iv, | |
974 | const u8 *key, size_t keysize, | |
975 | const u8 *inbuf, size_t inbufsize, | |
976 | u8 *outbuf, size_t *outbufsize) | |
977 | { | |
978 | struct crypt_req_pl { | |
979 | struct pl_head head; | |
980 | u8 var_tag; | |
981 | u8 var_len; | |
982 | u32 var; | |
983 | u8 mech_tag; | |
984 | u8 mech_len; | |
985 | u32 mech; | |
986 | /* | |
987 | * maybe followed by iv data | |
988 | * followed by key tag + key blob | |
989 | * followed by plaintext tag + plaintext | |
990 | */ | |
991 | } __packed * req_pl; | |
992 | struct crypt_rep_pl { | |
993 | struct pl_head head; | |
994 | u8 rc_tag; | |
995 | u8 rc_len; | |
996 | u32 rc; | |
997 | u8 data_tag; | |
998 | u8 data_lenfmt; | |
999 | /* data follows */ | |
1000 | } __packed * rep_pl; | |
1001 | struct ep11_cprb *req = NULL, *rep = NULL; | |
1002 | struct ep11_target_dev target; | |
1003 | struct ep11_urb *urb = NULL; | |
1004 | size_t req_pl_size, rep_pl_size; | |
386cb81e | 1005 | int n, api = EP11_API_V1, rc = -ENOMEM; |
55d0a513 HF |
1006 | u8 *p; |
1007 | ||
1008 | /* the simple asn1 coding used has length limits */ | |
1009 | if (keysize > 0xFFFF || inbufsize > 0xFFFF) | |
1010 | return -EINVAL; | |
1011 | ||
1012 | /* request cprb and payload */ | |
1013 | req_pl_size = sizeof(struct crypt_req_pl) + (iv ? 16 : 0) | |
1014 | + ASN1TAGLEN(keysize) + ASN1TAGLEN(inbufsize); | |
1015 | req = alloc_cprb(req_pl_size); | |
1016 | if (!req) | |
1017 | goto out; | |
2004b57c | 1018 | req_pl = (struct crypt_req_pl *)(((u8 *)req) + sizeof(*req)); |
55d0a513 HF |
1019 | prep_head(&req_pl->head, req_pl_size, api, (mode ? 20 : 19)); |
1020 | req_pl->var_tag = 0x04; | |
1021 | req_pl->var_len = sizeof(u32); | |
1022 | /* mech is mech + mech params (iv here) */ | |
1023 | req_pl->mech_tag = 0x04; | |
1024 | req_pl->mech_len = sizeof(u32) + (iv ? 16 : 0); | |
1025 | req_pl->mech = (mech ? mech : 0x00001085); /* CKM_AES_CBC_PAD */ | |
2004b57c | 1026 | p = ((u8 *)req_pl) + sizeof(*req_pl); |
55d0a513 HF |
1027 | if (iv) { |
1028 | memcpy(p, iv, 16); | |
1029 | p += 16; | |
1030 | } | |
1031 | /* key and input data */ | |
1032 | p += asn1tag_write(p, 0x04, key, keysize); | |
1033 | p += asn1tag_write(p, 0x04, inbuf, inbufsize); | |
1034 | ||
1035 | /* reply cprb and payload, assume out data size <= in data size + 32 */ | |
1036 | rep_pl_size = sizeof(struct crypt_rep_pl) + ASN1TAGLEN(inbufsize + 32); | |
1037 | rep = alloc_cprb(rep_pl_size); | |
1038 | if (!rep) | |
1039 | goto out; | |
2004b57c | 1040 | rep_pl = (struct crypt_rep_pl *)(((u8 *)rep) + sizeof(*rep)); |
55d0a513 HF |
1041 | |
1042 | /* urb and target */ | |
2004b57c | 1043 | urb = kmalloc(sizeof(*urb), GFP_KERNEL); |
55d0a513 HF |
1044 | if (!urb) |
1045 | goto out; | |
1046 | target.ap_id = card; | |
1047 | target.dom_id = domain; | |
1048 | prep_urb(urb, &target, 1, | |
1049 | req, sizeof(*req) + req_pl_size, | |
1050 | rep, sizeof(*rep) + rep_pl_size); | |
1051 | ||
52f72feb | 1052 | rc = zcrypt_send_ep11_cprb(urb); |
55d0a513 | 1053 | if (rc) { |
88e4c0da HF |
1054 | ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n", |
1055 | __func__, (int)card, (int)domain, rc); | |
55d0a513 HF |
1056 | goto out; |
1057 | } | |
1058 | ||
c0e983b6 HF |
1059 | /* check ep11 reply cprb */ |
1060 | rc = check_reply_cprb(rep, __func__); | |
1061 | if (rc) | |
1062 | goto out; | |
1063 | ||
1064 | /* check payload */ | |
55d0a513 HF |
1065 | rc = check_reply_pl((u8 *)rep_pl, __func__); |
1066 | if (rc) | |
1067 | goto out; | |
1068 | if (rep_pl->data_tag != 0x04) { | |
88e4c0da | 1069 | ZCRYPT_DBF_ERR("%s unknown reply data format\n", __func__); |
55d0a513 HF |
1070 | rc = -EIO; |
1071 | goto out; | |
1072 | } | |
2004b57c HF |
1073 | p = ((u8 *)rep_pl) + sizeof(*rep_pl); |
1074 | if (rep_pl->data_lenfmt <= 127) { | |
55d0a513 | 1075 | n = rep_pl->data_lenfmt; |
2004b57c | 1076 | } else if (rep_pl->data_lenfmt == 0x81) { |
55d0a513 | 1077 | n = *p++; |
2004b57c HF |
1078 | } else if (rep_pl->data_lenfmt == 0x82) { |
1079 | n = *((u16 *)p); | |
55d0a513 HF |
1080 | p += 2; |
1081 | } else { | |
88e4c0da HF |
1082 | ZCRYPT_DBF_ERR("%s unknown reply data length format 0x%02hhx\n", |
1083 | __func__, rep_pl->data_lenfmt); | |
55d0a513 HF |
1084 | rc = -EIO; |
1085 | goto out; | |
1086 | } | |
1087 | if (n > *outbufsize) { | |
88e4c0da HF |
1088 | ZCRYPT_DBF_ERR("%s mismatch reply data len %d / output buffer %zu\n", |
1089 | __func__, n, *outbufsize); | |
55d0a513 HF |
1090 | rc = -ENOSPC; |
1091 | goto out; | |
1092 | } | |
1093 | ||
1094 | memcpy(outbuf, p, n); | |
1095 | *outbufsize = n; | |
1096 | ||
1097 | out: | |
1098 | kfree(req); | |
1099 | kfree(rep); | |
1100 | kfree(urb); | |
1101 | return rc; | |
1102 | } | |
1103 | ||
da2863f1 HD |
1104 | static int _ep11_unwrapkey(u16 card, u16 domain, |
1105 | const u8 *kek, size_t keksize, | |
1106 | const u8 *enckey, size_t enckeysize, | |
1107 | u32 mech, const u8 *iv, | |
1108 | u32 keybitsize, u32 keygenflags, | |
1109 | u8 *keybuf, size_t *keybufsize) | |
55d0a513 HF |
1110 | { |
1111 | struct uw_req_pl { | |
1112 | struct pl_head head; | |
1113 | u8 attr_tag; | |
1114 | u8 attr_len; | |
1115 | u32 attr_header; | |
1116 | u32 attr_bool_mask; | |
1117 | u32 attr_bool_bits; | |
1118 | u32 attr_key_type; | |
1119 | u32 attr_key_type_value; | |
1120 | u32 attr_val_len; | |
1121 | u32 attr_val_len_value; | |
1122 | u8 mech_tag; | |
1123 | u8 mech_len; | |
1124 | u32 mech; | |
1125 | /* | |
1126 | * maybe followed by iv data | |
1127 | * followed by kek tag + kek blob | |
1128 | * followed by empty mac tag | |
386cb81e | 1129 | * followed by empty pin tag or empty pinblob tag |
55d0a513 HF |
1130 | * followed by encryted key tag + bytes |
1131 | */ | |
1132 | } __packed * req_pl; | |
1133 | struct uw_rep_pl { | |
1134 | struct pl_head head; | |
1135 | u8 rc_tag; | |
1136 | u8 rc_len; | |
1137 | u32 rc; | |
1138 | u8 data_tag; | |
1139 | u8 data_lenfmt; | |
1140 | u16 data_len; | |
1141 | u8 data[512]; | |
1142 | } __packed * rep_pl; | |
1143 | struct ep11_cprb *req = NULL, *rep = NULL; | |
386cb81e | 1144 | size_t req_pl_size, pinblob_size = 0; |
55d0a513 HF |
1145 | struct ep11_target_dev target; |
1146 | struct ep11_urb *urb = NULL; | |
55d0a513 HF |
1147 | int api, rc = -ENOMEM; |
1148 | u8 *p; | |
1149 | ||
1150 | /* request cprb and payload */ | |
386cb81e HD |
1151 | api = (!keygenflags || keygenflags & 0x00200000) ? |
1152 | EP11_API_V4 : EP11_API_V1; | |
1153 | if (ap_is_se_guest()) { | |
1154 | /* | |
1155 | * unwrap within SE environment requires API ordinal 6 | |
1156 | * with empty pinblob | |
1157 | */ | |
1158 | api = EP11_API_V6; | |
1159 | pinblob_size = EP11_PINBLOB_V1_BYTES; | |
1160 | } | |
55d0a513 | 1161 | req_pl_size = sizeof(struct uw_req_pl) + (iv ? 16 : 0) |
386cb81e HD |
1162 | + ASN1TAGLEN(keksize) + ASN1TAGLEN(0) |
1163 | + ASN1TAGLEN(pinblob_size) + ASN1TAGLEN(enckeysize); | |
55d0a513 HF |
1164 | req = alloc_cprb(req_pl_size); |
1165 | if (!req) | |
1166 | goto out; | |
2004b57c | 1167 | req_pl = (struct uw_req_pl *)(((u8 *)req) + sizeof(*req)); |
55d0a513 HF |
1168 | prep_head(&req_pl->head, req_pl_size, api, 34); /* UnwrapKey */ |
1169 | req_pl->attr_tag = 0x04; | |
1170 | req_pl->attr_len = 7 * sizeof(u32); | |
1171 | req_pl->attr_header = 0x10020000; | |
1172 | req_pl->attr_bool_mask = keygenflags ? keygenflags : KEY_ATTR_DEFAULTS; | |
1173 | req_pl->attr_bool_bits = keygenflags ? keygenflags : KEY_ATTR_DEFAULTS; | |
1174 | req_pl->attr_key_type = 0x00000100; /* CKA_KEY_TYPE */ | |
1175 | req_pl->attr_key_type_value = 0x0000001f; /* CKK_AES */ | |
1176 | req_pl->attr_val_len = 0x00000161; /* CKA_VALUE_LEN */ | |
1177 | req_pl->attr_val_len_value = keybitsize / 8; | |
1178 | /* mech is mech + mech params (iv here) */ | |
1179 | req_pl->mech_tag = 0x04; | |
1180 | req_pl->mech_len = sizeof(u32) + (iv ? 16 : 0); | |
1181 | req_pl->mech = (mech ? mech : 0x00001085); /* CKM_AES_CBC_PAD */ | |
2004b57c | 1182 | p = ((u8 *)req_pl) + sizeof(*req_pl); |
55d0a513 HF |
1183 | if (iv) { |
1184 | memcpy(p, iv, 16); | |
1185 | p += 16; | |
1186 | } | |
1187 | /* kek */ | |
1188 | p += asn1tag_write(p, 0x04, kek, keksize); | |
1189 | /* empty mac key tag */ | |
1190 | *p++ = 0x04; | |
1191 | *p++ = 0; | |
386cb81e | 1192 | /* pin tag */ |
55d0a513 | 1193 | *p++ = 0x04; |
386cb81e HD |
1194 | *p++ = pinblob_size; |
1195 | p += pinblob_size; | |
05ccaca0 | 1196 | /* encrypted key value tag and bytes */ |
55d0a513 HF |
1197 | p += asn1tag_write(p, 0x04, enckey, enckeysize); |
1198 | ||
1199 | /* reply cprb and payload */ | |
1200 | rep = alloc_cprb(sizeof(struct uw_rep_pl)); | |
1201 | if (!rep) | |
1202 | goto out; | |
2004b57c | 1203 | rep_pl = (struct uw_rep_pl *)(((u8 *)rep) + sizeof(*rep)); |
55d0a513 HF |
1204 | |
1205 | /* urb and target */ | |
2004b57c | 1206 | urb = kmalloc(sizeof(*urb), GFP_KERNEL); |
55d0a513 HF |
1207 | if (!urb) |
1208 | goto out; | |
1209 | target.ap_id = card; | |
1210 | target.dom_id = domain; | |
1211 | prep_urb(urb, &target, 1, | |
1212 | req, sizeof(*req) + req_pl_size, | |
1213 | rep, sizeof(*rep) + sizeof(*rep_pl)); | |
1214 | ||
52f72feb | 1215 | rc = zcrypt_send_ep11_cprb(urb); |
55d0a513 | 1216 | if (rc) { |
88e4c0da HF |
1217 | ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n", |
1218 | __func__, (int)card, (int)domain, rc); | |
55d0a513 HF |
1219 | goto out; |
1220 | } | |
1221 | ||
c0e983b6 HF |
1222 | /* check ep11 reply cprb */ |
1223 | rc = check_reply_cprb(rep, __func__); | |
1224 | if (rc) | |
1225 | goto out; | |
1226 | ||
1227 | /* check payload */ | |
55d0a513 HF |
1228 | rc = check_reply_pl((u8 *)rep_pl, __func__); |
1229 | if (rc) | |
1230 | goto out; | |
1231 | if (rep_pl->data_tag != 0x04 || rep_pl->data_lenfmt != 0x82) { | |
88e4c0da | 1232 | ZCRYPT_DBF_ERR("%s unknown reply data format\n", __func__); |
55d0a513 HF |
1233 | rc = -EIO; |
1234 | goto out; | |
1235 | } | |
1236 | if (rep_pl->data_len > *keybufsize) { | |
88e4c0da HF |
1237 | ZCRYPT_DBF_ERR("%s mismatch reply data len / key buffer len\n", |
1238 | __func__); | |
55d0a513 HF |
1239 | rc = -ENOSPC; |
1240 | goto out; | |
1241 | } | |
1242 | ||
da2863f1 | 1243 | /* copy key blob */ |
55d0a513 HF |
1244 | memcpy(keybuf, rep_pl->data, rep_pl->data_len); |
1245 | *keybufsize = rep_pl->data_len; | |
55d0a513 HF |
1246 | |
1247 | out: | |
1248 | kfree(req); | |
1249 | kfree(rep); | |
1250 | kfree(urb); | |
1251 | return rc; | |
1252 | } | |
1253 | ||
da2863f1 HD |
1254 | static int ep11_unwrapkey(u16 card, u16 domain, |
1255 | const u8 *kek, size_t keksize, | |
1256 | const u8 *enckey, size_t enckeysize, | |
1257 | u32 mech, const u8 *iv, | |
1258 | u32 keybitsize, u32 keygenflags, | |
1259 | u8 *keybuf, size_t *keybufsize, | |
1260 | u8 keybufver) | |
1261 | { | |
1262 | struct ep11kblob_header *hdr; | |
1263 | size_t hdr_size, pl_size; | |
1264 | u8 *pl; | |
1265 | int rc; | |
1266 | ||
1267 | rc = ep11_kb_split(keybuf, *keybufsize, keybufver, | |
1268 | &hdr, &hdr_size, &pl, &pl_size); | |
1269 | if (rc) | |
1270 | return rc; | |
1271 | ||
1272 | rc = _ep11_unwrapkey(card, domain, kek, keksize, enckey, enckeysize, | |
1273 | mech, iv, keybitsize, keygenflags, | |
1274 | pl, &pl_size); | |
1275 | if (rc) | |
1276 | return rc; | |
1277 | ||
1278 | *keybufsize = hdr_size + pl_size; | |
1279 | ||
1280 | /* update header information */ | |
1281 | hdr = (struct ep11kblob_header *)keybuf; | |
1282 | hdr->type = TOKTYPE_NON_CCA; | |
1283 | hdr->len = *keybufsize; | |
1284 | hdr->version = keybufver; | |
1285 | hdr->bitlen = keybitsize; | |
1286 | ||
1287 | return 0; | |
1288 | } | |
1289 | ||
d1fdfb0b HD |
1290 | static int _ep11_wrapkey(u16 card, u16 domain, |
1291 | const u8 *key, size_t keysize, | |
1292 | u32 mech, const u8 *iv, | |
1293 | u8 *databuf, size_t *datasize) | |
55d0a513 HF |
1294 | { |
1295 | struct wk_req_pl { | |
1296 | struct pl_head head; | |
1297 | u8 var_tag; | |
1298 | u8 var_len; | |
1299 | u32 var; | |
1300 | u8 mech_tag; | |
1301 | u8 mech_len; | |
1302 | u32 mech; | |
1303 | /* | |
1304 | * followed by iv data | |
1305 | * followed by key tag + key blob | |
1306 | * followed by dummy kek param | |
1307 | * followed by dummy mac param | |
1308 | */ | |
1309 | } __packed * req_pl; | |
1310 | struct wk_rep_pl { | |
1311 | struct pl_head head; | |
1312 | u8 rc_tag; | |
1313 | u8 rc_len; | |
1314 | u32 rc; | |
1315 | u8 data_tag; | |
1316 | u8 data_lenfmt; | |
1317 | u16 data_len; | |
fa6999e3 | 1318 | u8 data[1024]; |
55d0a513 HF |
1319 | } __packed * rep_pl; |
1320 | struct ep11_cprb *req = NULL, *rep = NULL; | |
1321 | struct ep11_target_dev target; | |
1322 | struct ep11_urb *urb = NULL; | |
55d0a513 HF |
1323 | size_t req_pl_size; |
1324 | int api, rc = -ENOMEM; | |
1325 | u8 *p; | |
1326 | ||
1327 | /* request cprb and payload */ | |
1328 | req_pl_size = sizeof(struct wk_req_pl) + (iv ? 16 : 0) | |
1329 | + ASN1TAGLEN(keysize) + 4; | |
1330 | req = alloc_cprb(req_pl_size); | |
1331 | if (!req) | |
1332 | goto out; | |
1333 | if (!mech || mech == 0x80060001) | |
1334 | req->flags |= 0x20; /* CPACF_WRAP needs special bit */ | |
2004b57c | 1335 | req_pl = (struct wk_req_pl *)(((u8 *)req) + sizeof(*req)); |
386cb81e HD |
1336 | api = (!mech || mech == 0x80060001) ? /* CKM_IBM_CPACF_WRAP */ |
1337 | EP11_API_V4 : EP11_API_V1; | |
55d0a513 HF |
1338 | prep_head(&req_pl->head, req_pl_size, api, 33); /* WrapKey */ |
1339 | req_pl->var_tag = 0x04; | |
1340 | req_pl->var_len = sizeof(u32); | |
1341 | /* mech is mech + mech params (iv here) */ | |
1342 | req_pl->mech_tag = 0x04; | |
1343 | req_pl->mech_len = sizeof(u32) + (iv ? 16 : 0); | |
1344 | req_pl->mech = (mech ? mech : 0x80060001); /* CKM_IBM_CPACF_WRAP */ | |
2004b57c | 1345 | p = ((u8 *)req_pl) + sizeof(*req_pl); |
55d0a513 HF |
1346 | if (iv) { |
1347 | memcpy(p, iv, 16); | |
1348 | p += 16; | |
1349 | } | |
1350 | /* key blob */ | |
1351 | p += asn1tag_write(p, 0x04, key, keysize); | |
55d0a513 HF |
1352 | /* empty kek tag */ |
1353 | *p++ = 0x04; | |
1354 | *p++ = 0; | |
1355 | /* empty mac tag */ | |
1356 | *p++ = 0x04; | |
1357 | *p++ = 0; | |
1358 | ||
1359 | /* reply cprb and payload */ | |
1360 | rep = alloc_cprb(sizeof(struct wk_rep_pl)); | |
1361 | if (!rep) | |
1362 | goto out; | |
2004b57c | 1363 | rep_pl = (struct wk_rep_pl *)(((u8 *)rep) + sizeof(*rep)); |
55d0a513 HF |
1364 | |
1365 | /* urb and target */ | |
2004b57c | 1366 | urb = kmalloc(sizeof(*urb), GFP_KERNEL); |
55d0a513 HF |
1367 | if (!urb) |
1368 | goto out; | |
1369 | target.ap_id = card; | |
1370 | target.dom_id = domain; | |
1371 | prep_urb(urb, &target, 1, | |
1372 | req, sizeof(*req) + req_pl_size, | |
1373 | rep, sizeof(*rep) + sizeof(*rep_pl)); | |
1374 | ||
52f72feb | 1375 | rc = zcrypt_send_ep11_cprb(urb); |
55d0a513 | 1376 | if (rc) { |
88e4c0da HF |
1377 | ZCRYPT_DBF_ERR("%s zcrypt_send_ep11_cprb(card=%d dom=%d) failed, rc=%d\n", |
1378 | __func__, (int)card, (int)domain, rc); | |
55d0a513 HF |
1379 | goto out; |
1380 | } | |
1381 | ||
c0e983b6 HF |
1382 | /* check ep11 reply cprb */ |
1383 | rc = check_reply_cprb(rep, __func__); | |
1384 | if (rc) | |
1385 | goto out; | |
1386 | ||
1387 | /* check payload */ | |
55d0a513 HF |
1388 | rc = check_reply_pl((u8 *)rep_pl, __func__); |
1389 | if (rc) | |
1390 | goto out; | |
1391 | if (rep_pl->data_tag != 0x04 || rep_pl->data_lenfmt != 0x82) { | |
88e4c0da | 1392 | ZCRYPT_DBF_ERR("%s unknown reply data format\n", __func__); |
55d0a513 HF |
1393 | rc = -EIO; |
1394 | goto out; | |
1395 | } | |
1396 | if (rep_pl->data_len > *datasize) { | |
88e4c0da HF |
1397 | ZCRYPT_DBF_ERR("%s mismatch reply data len / data buffer len\n", |
1398 | __func__); | |
55d0a513 HF |
1399 | rc = -ENOSPC; |
1400 | goto out; | |
1401 | } | |
1402 | ||
1403 | /* copy the data from the cprb to the data buffer */ | |
1404 | memcpy(databuf, rep_pl->data, rep_pl->data_len); | |
1405 | *datasize = rep_pl->data_len; | |
1406 | ||
1407 | out: | |
1408 | kfree(req); | |
1409 | kfree(rep); | |
1410 | kfree(urb); | |
1411 | return rc; | |
1412 | } | |
1413 | ||
1414 | int ep11_clr2keyblob(u16 card, u16 domain, u32 keybitsize, u32 keygenflags, | |
da2863f1 HD |
1415 | const u8 *clrkey, u8 *keybuf, size_t *keybufsize, |
1416 | u32 keytype) | |
55d0a513 HF |
1417 | { |
1418 | int rc; | |
55d0a513 HF |
1419 | u8 encbuf[64], *kek = NULL; |
1420 | size_t clrkeylen, keklen, encbuflen = sizeof(encbuf); | |
1421 | ||
2004b57c | 1422 | if (keybitsize == 128 || keybitsize == 192 || keybitsize == 256) { |
55d0a513 | 1423 | clrkeylen = keybitsize / 8; |
2004b57c | 1424 | } else { |
88e4c0da HF |
1425 | ZCRYPT_DBF_ERR("%s unknown/unsupported keybitsize %d\n", |
1426 | __func__, keybitsize); | |
55d0a513 HF |
1427 | return -EINVAL; |
1428 | } | |
1429 | ||
1430 | /* allocate memory for the temp kek */ | |
1431 | keklen = MAXEP11AESKEYBLOBSIZE; | |
1432 | kek = kmalloc(keklen, GFP_ATOMIC); | |
1433 | if (!kek) { | |
1434 | rc = -ENOMEM; | |
1435 | goto out; | |
1436 | } | |
1437 | ||
1438 | /* Step 1: generate AES 256 bit random kek key */ | |
fb249ce7 HD |
1439 | rc = _ep11_genaeskey(card, domain, 256, |
1440 | 0x00006c00, /* EN/DECRYPT, WRAP/UNWRAP */ | |
1441 | kek, &keklen); | |
55d0a513 | 1442 | if (rc) { |
88e4c0da HF |
1443 | ZCRYPT_DBF_ERR("%s generate kek key failed, rc=%d\n", |
1444 | __func__, rc); | |
55d0a513 HF |
1445 | goto out; |
1446 | } | |
55d0a513 HF |
1447 | |
1448 | /* Step 2: encrypt clear key value with the kek key */ | |
1449 | rc = ep11_cryptsingle(card, domain, 0, 0, def_iv, kek, keklen, | |
1450 | clrkey, clrkeylen, encbuf, &encbuflen); | |
1451 | if (rc) { | |
88e4c0da HF |
1452 | ZCRYPT_DBF_ERR("%s encrypting key value with kek key failed, rc=%d\n", |
1453 | __func__, rc); | |
55d0a513 HF |
1454 | goto out; |
1455 | } | |
1456 | ||
1457 | /* Step 3: import the encrypted key value as a new key */ | |
1458 | rc = ep11_unwrapkey(card, domain, kek, keklen, | |
1459 | encbuf, encbuflen, 0, def_iv, | |
da2863f1 | 1460 | keybitsize, 0, keybuf, keybufsize, keytype); |
55d0a513 | 1461 | if (rc) { |
88e4c0da HF |
1462 | ZCRYPT_DBF_ERR("%s importing key value as new key failed,, rc=%d\n", |
1463 | __func__, rc); | |
55d0a513 HF |
1464 | goto out; |
1465 | } | |
1466 | ||
1467 | out: | |
1468 | kfree(kek); | |
1469 | return rc; | |
1470 | } | |
1471 | EXPORT_SYMBOL(ep11_clr2keyblob); | |
1472 | ||
d1fdfb0b HD |
1473 | int ep11_kblob2protkey(u16 card, u16 dom, |
1474 | const u8 *keyblob, size_t keybloblen, | |
fa6999e3 | 1475 | u8 *protkey, u32 *protkeylen, u32 *protkeytype) |
55d0a513 | 1476 | { |
d1fdfb0b HD |
1477 | struct ep11kblob_header *hdr; |
1478 | struct ep11keyblob *key; | |
fa6999e3 | 1479 | size_t wkbuflen, keylen; |
55d0a513 HF |
1480 | struct wk_info { |
1481 | u16 version; | |
1482 | u8 res1[16]; | |
1483 | u32 pkeytype; | |
1484 | u32 pkeybitsize; | |
1485 | u64 pkeysize; | |
1486 | u8 res2[8]; | |
3b42877c | 1487 | u8 pkey[]; |
55d0a513 | 1488 | } __packed * wki; |
d1fdfb0b HD |
1489 | u8 *wkbuf = NULL; |
1490 | int rc = -EIO; | |
fa6999e3 | 1491 | |
d1fdfb0b | 1492 | if (ep11_kb_decode((u8 *)keyblob, keybloblen, &hdr, NULL, &key, &keylen)) |
fa6999e3 | 1493 | return -EINVAL; |
d1fdfb0b HD |
1494 | |
1495 | if (hdr->version == TOKVER_EP11_AES) { | |
1496 | /* wipe overlayed header */ | |
1497 | memset(hdr, 0, sizeof(*hdr)); | |
2004b57c | 1498 | } |
d1fdfb0b | 1499 | /* !!! hdr is no longer a valid header !!! */ |
55d0a513 HF |
1500 | |
1501 | /* alloc temp working buffer */ | |
fa6999e3 | 1502 | wkbuflen = (keylen + AES_BLOCK_SIZE) & (~(AES_BLOCK_SIZE - 1)); |
55d0a513 HF |
1503 | wkbuf = kmalloc(wkbuflen, GFP_ATOMIC); |
1504 | if (!wkbuf) | |
1505 | return -ENOMEM; | |
1506 | ||
1507 | /* ep11 secure key -> protected key + info */ | |
d1fdfb0b HD |
1508 | rc = _ep11_wrapkey(card, dom, (u8 *)key, keylen, |
1509 | 0, def_iv, wkbuf, &wkbuflen); | |
55d0a513 | 1510 | if (rc) { |
88e4c0da HF |
1511 | ZCRYPT_DBF_ERR("%s rewrapping ep11 key to pkey failed, rc=%d\n", |
1512 | __func__, rc); | |
55d0a513 HF |
1513 | goto out; |
1514 | } | |
2004b57c | 1515 | wki = (struct wk_info *)wkbuf; |
55d0a513 HF |
1516 | |
1517 | /* check struct version and pkey type */ | |
fa6999e3 | 1518 | if (wki->version != 1 || wki->pkeytype < 1 || wki->pkeytype > 5) { |
88e4c0da HF |
1519 | ZCRYPT_DBF_ERR("%s wk info version %d or pkeytype %d mismatch.\n", |
1520 | __func__, (int)wki->version, (int)wki->pkeytype); | |
55d0a513 HF |
1521 | rc = -EIO; |
1522 | goto out; | |
1523 | } | |
1524 | ||
fa6999e3 HF |
1525 | /* check protected key type field */ |
1526 | switch (wki->pkeytype) { | |
1527 | case 1: /* AES */ | |
1528 | switch (wki->pkeysize) { | |
2004b57c | 1529 | case 16 + 32: |
fa6999e3 HF |
1530 | /* AES 128 protected key */ |
1531 | if (protkeytype) | |
1532 | *protkeytype = PKEY_KEYTYPE_AES_128; | |
1533 | break; | |
2004b57c | 1534 | case 24 + 32: |
fa6999e3 HF |
1535 | /* AES 192 protected key */ |
1536 | if (protkeytype) | |
1537 | *protkeytype = PKEY_KEYTYPE_AES_192; | |
1538 | break; | |
2004b57c | 1539 | case 32 + 32: |
fa6999e3 HF |
1540 | /* AES 256 protected key */ |
1541 | if (protkeytype) | |
1542 | *protkeytype = PKEY_KEYTYPE_AES_256; | |
1543 | break; | |
1544 | default: | |
88e4c0da HF |
1545 | ZCRYPT_DBF_ERR("%s unknown/unsupported AES pkeysize %d\n", |
1546 | __func__, (int)wki->pkeysize); | |
fa6999e3 HF |
1547 | rc = -EIO; |
1548 | goto out; | |
1549 | } | |
55d0a513 | 1550 | break; |
fa6999e3 HF |
1551 | case 3: /* EC-P */ |
1552 | case 4: /* EC-ED */ | |
1553 | case 5: /* EC-BP */ | |
55d0a513 | 1554 | if (protkeytype) |
fa6999e3 | 1555 | *protkeytype = PKEY_KEYTYPE_ECC; |
55d0a513 | 1556 | break; |
fa6999e3 | 1557 | case 2: /* TDES */ |
55d0a513 | 1558 | default: |
88e4c0da HF |
1559 | ZCRYPT_DBF_ERR("%s unknown/unsupported key type %d\n", |
1560 | __func__, (int)wki->pkeytype); | |
55d0a513 HF |
1561 | rc = -EIO; |
1562 | goto out; | |
1563 | } | |
fa6999e3 | 1564 | |
cada938a | 1565 | /* copy the translated protected key */ |
fa6999e3 | 1566 | if (wki->pkeysize > *protkeylen) { |
88e4c0da HF |
1567 | ZCRYPT_DBF_ERR("%s wk info pkeysize %llu > protkeysize %u\n", |
1568 | __func__, wki->pkeysize, *protkeylen); | |
fa6999e3 HF |
1569 | rc = -EINVAL; |
1570 | goto out; | |
1571 | } | |
55d0a513 | 1572 | memcpy(protkey, wki->pkey, wki->pkeysize); |
fa6999e3 | 1573 | *protkeylen = wki->pkeysize; |
55d0a513 HF |
1574 | |
1575 | out: | |
1576 | kfree(wkbuf); | |
1577 | return rc; | |
1578 | } | |
fa6999e3 | 1579 | EXPORT_SYMBOL(ep11_kblob2protkey); |
55d0a513 HF |
1580 | |
1581 | int ep11_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain, | |
1582 | int minhwtype, int minapi, const u8 *wkvp) | |
1583 | { | |
1584 | struct zcrypt_device_status_ext *device_status; | |
1585 | u32 *_apqns = NULL, _nr_apqns = 0; | |
1586 | int i, card, dom, rc = -ENOMEM; | |
1587 | struct ep11_domain_info edi; | |
1588 | struct ep11_card_info eci; | |
1589 | ||
1590 | /* fetch status of all crypto cards */ | |
c1248638 HC |
1591 | device_status = kvcalloc(MAX_ZDEV_ENTRIES_EXT, |
1592 | sizeof(struct zcrypt_device_status_ext), | |
1593 | GFP_KERNEL); | |
55d0a513 HF |
1594 | if (!device_status) |
1595 | return -ENOMEM; | |
1596 | zcrypt_device_status_mask_ext(device_status); | |
1597 | ||
1598 | /* allocate 1k space for up to 256 apqns */ | |
1599 | _apqns = kmalloc_array(256, sizeof(u32), GFP_KERNEL); | |
1600 | if (!_apqns) { | |
34515df2 | 1601 | kvfree(device_status); |
55d0a513 HF |
1602 | return -ENOMEM; |
1603 | } | |
1604 | ||
1605 | /* walk through all the crypto apqnss */ | |
1606 | for (i = 0; i < MAX_ZDEV_ENTRIES_EXT; i++) { | |
1607 | card = AP_QID_CARD(device_status[i].qid); | |
1608 | dom = AP_QID_QUEUE(device_status[i].qid); | |
1609 | /* check online state */ | |
1610 | if (!device_status[i].online) | |
1611 | continue; | |
1612 | /* check for ep11 functions */ | |
1613 | if (!(device_status[i].functions & 0x01)) | |
1614 | continue; | |
1615 | /* check cardnr */ | |
1616 | if (cardnr != 0xFFFF && card != cardnr) | |
1617 | continue; | |
1618 | /* check domain */ | |
1619 | if (domain != 0xFFFF && dom != domain) | |
1620 | continue; | |
1621 | /* check min hardware type */ | |
1622 | if (minhwtype && device_status[i].hwtype < minhwtype) | |
1623 | continue; | |
1624 | /* check min api version if given */ | |
1625 | if (minapi > 0) { | |
1626 | if (ep11_get_card_info(card, &eci, 0)) | |
1627 | continue; | |
1628 | if (minapi > eci.API_ord_nr) | |
1629 | continue; | |
1630 | } | |
1631 | /* check wkvp if given */ | |
1632 | if (wkvp) { | |
1633 | if (ep11_get_domain_info(card, dom, &edi)) | |
1634 | continue; | |
1635 | if (edi.cur_wk_state != '1') | |
1636 | continue; | |
1637 | if (memcmp(wkvp, edi.cur_wkvp, 16)) | |
1638 | continue; | |
1639 | } | |
1640 | /* apqn passed all filtering criterons, add to the array */ | |
1641 | if (_nr_apqns < 256) | |
2004b57c | 1642 | _apqns[_nr_apqns++] = (((u16)card) << 16) | ((u16)dom); |
55d0a513 HF |
1643 | } |
1644 | ||
1645 | /* nothing found ? */ | |
1646 | if (!_nr_apqns) { | |
1647 | kfree(_apqns); | |
1648 | rc = -ENODEV; | |
1649 | } else { | |
1650 | /* no re-allocation, simple return the _apqns array */ | |
1651 | *apqns = _apqns; | |
1652 | *nr_apqns = _nr_apqns; | |
1653 | rc = 0; | |
1654 | } | |
1655 | ||
34515df2 | 1656 | kvfree(device_status); |
55d0a513 HF |
1657 | return rc; |
1658 | } | |
1659 | EXPORT_SYMBOL(ep11_findcard2); | |
1660 | ||
7384eb72 HF |
1661 | void __exit zcrypt_ep11misc_exit(void) |
1662 | { | |
1663 | card_cache_free(); | |
1664 | } |