2 * Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/endian.h>
33 #include <sys/errno.h>
34 #include <sys/malloc.h>
35 #include <crypto/sha2/sha256.h>
36 #include <crypto/sha2/sha512.h>
37 #include <opencrypto/cryptodev.h>
40 #include <sys/libkern.h>
42 #include <sys/mutex.h>
43 #include <geom/geom.h>
44 #include <crypto/intake.h>
51 #include <sys/queue.h>
57 #define G_ELI_CLASS_NAME "ELI"
58 #define G_ELI_MAGIC "GEOM::ELI"
59 #define G_ELI_SUFFIX ".eli"
63 * 0 - Initial version number.
64 * 1 - Added data authentication support (md_aalgo field and
65 * G_ELI_FLAG_AUTH flag).
66 * 2 - Added G_ELI_FLAG_READONLY.
67 * 3 - Added 'configure' subcommand.
68 * 4 - IV is generated from offset converted to little-endian
69 * (the G_ELI_FLAG_NATIVE_BYTE_ORDER flag will be set for older versions).
70 * 5 - Added multiple encrypton keys and AES-XTS support.
71 * 6 - Fixed usage of multiple keys for authenticated providers (the
72 * G_ELI_FLAG_FIRST_KEY flag will be set for older versions).
73 * 7 - Encryption keys are now generated from the Data Key and not from the
74 * IV Key (the G_ELI_FLAG_ENC_IVKEY flag will be set for older versions).
76 #define G_ELI_VERSION_00 0
77 #define G_ELI_VERSION_01 1
78 #define G_ELI_VERSION_02 2
79 #define G_ELI_VERSION_03 3
80 #define G_ELI_VERSION_04 4
81 #define G_ELI_VERSION_05 5
82 #define G_ELI_VERSION_06 6
83 #define G_ELI_VERSION_07 7
84 #define G_ELI_VERSION G_ELI_VERSION_07
87 /* Use random, onetime keys. */
88 #define G_ELI_FLAG_ONETIME 0x00000001
89 /* Ask for the passphrase from the kernel, before mounting root. */
90 #define G_ELI_FLAG_BOOT 0x00000002
91 /* Detach on last close, if we were open for writing. */
92 #define G_ELI_FLAG_WO_DETACH 0x00000004
93 /* Detach on last close. */
94 #define G_ELI_FLAG_RW_DETACH 0x00000008
95 /* Provide data authentication. */
96 #define G_ELI_FLAG_AUTH 0x00000010
97 /* Provider is read-only, we should deny all write attempts. */
98 #define G_ELI_FLAG_RO 0x00000020
99 /* Don't pass through BIO_DELETE requests. */
100 #define G_ELI_FLAG_NODELETE 0x00000040
101 /* This GELI supports GELIBoot */
102 #define G_ELI_FLAG_GELIBOOT 0x00000080
104 /* Provider was open for writing. */
105 #define G_ELI_FLAG_WOPEN 0x00010000
106 /* Destroy device. */
107 #define G_ELI_FLAG_DESTROY 0x00020000
108 /* Provider uses native byte-order for IV generation. */
109 #define G_ELI_FLAG_NATIVE_BYTE_ORDER 0x00040000
110 /* Provider uses single encryption key. */
111 #define G_ELI_FLAG_SINGLE_KEY 0x00080000
112 /* Device suspended. */
113 #define G_ELI_FLAG_SUSPEND 0x00100000
114 /* Provider uses first encryption key. */
115 #define G_ELI_FLAG_FIRST_KEY 0x00200000
116 /* Provider uses IV-Key for encryption key generation. */
117 #define G_ELI_FLAG_ENC_IVKEY 0x00400000
119 #define G_ELI_NEW_BIO 255
121 #define SHA512_MDLEN 64
122 #define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH
124 #define G_ELI_MAXMKEYS 2
125 #define G_ELI_MAXKEYLEN 64
126 #define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN
127 #define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN
128 #define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN
129 #define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN
130 #define G_ELI_SALTLEN 64
131 #define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN)
132 /* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */
133 #define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN)
134 #define G_ELI_OVERWRITES 5
135 /* Switch data encryption key every 2^20 blocks. */
136 #define G_ELI_KEY_SHIFT 20
138 #define G_ELI_CRYPTO_UNKNOWN 0
139 #define G_ELI_CRYPTO_HW 1
140 #define G_ELI_CRYPTO_SW 2
143 #if (MAX_KEY_BYTES < G_ELI_DATAIVKEYLEN)
144 #error "MAX_KEY_BYTES is less than G_ELI_DATAKEYLEN"
147 extern int g_eli_debug;
148 extern u_int g_eli_overwrites;
149 extern u_int g_eli_batch;
151 #define G_ELI_DEBUG(lvl, ...) do { \
152 if (g_eli_debug >= (lvl)) { \
153 printf("GEOM_ELI"); \
154 if (g_eli_debug > 0) \
155 printf("[%u]", lvl); \
157 printf(__VA_ARGS__); \
161 #define G_ELI_LOGREQ(lvl, bp, ...) do { \
162 if (g_eli_debug >= (lvl)) { \
163 printf("GEOM_ELI"); \
164 if (g_eli_debug > 0) \
165 printf("[%u]", lvl); \
167 printf(__VA_ARGS__); \
174 struct g_eli_worker {
175 struct g_eli_softc *w_softc;
180 LIST_ENTRY(g_eli_worker) w_next;
186 struct g_geom *sc_geom;
189 uint8_t sc_mkey[G_ELI_DATAIVKEYLEN];
190 uint8_t sc_ekey[G_ELI_DATAKEYLEN];
191 TAILQ_HEAD(, g_eli_key) sc_ekeys_queue;
192 RB_HEAD(g_eli_key_tree, g_eli_key) sc_ekeys_tree;
193 struct mtx sc_ekeys_lock;
194 uint64_t sc_ekeys_total;
195 uint64_t sc_ekeys_allocated;
198 uint8_t sc_akey[G_ELI_AUTHKEYLEN];
202 SHA256_CTX sc_akeyctx;
203 uint8_t sc_ivkey[G_ELI_IVKEYLEN];
209 size_t sc_sectorsize;
210 u_int sc_bytes_per_sector;
211 u_int sc_data_per_sector;
215 boolean_t sc_cpubind;
217 /* Only for software cryptography. */
218 struct bio_queue_head sc_queue;
219 struct mtx sc_queue_mtx;
220 LIST_HEAD(, g_eli_worker) sc_workers;
223 #define sc_name sc_geom->name
225 #define G_ELI_KEY_MAGIC 0xe11341c
228 /* Key value, must be first in the structure. */
229 uint8_t gek_key[G_ELI_DATAKEYLEN];
234 /* Reference counter. */
236 /* Keeps keys sorted by most recent use. */
237 TAILQ_ENTRY(g_eli_key) gek_next;
238 /* Keeps keys sorted by number. */
239 RB_ENTRY(g_eli_key) gek_link;
242 struct g_eli_metadata {
243 char md_magic[16]; /* Magic value. */
244 uint32_t md_version; /* Version number. */
245 uint32_t md_flags; /* Additional flags. */
246 uint16_t md_ealgo; /* Encryption algorithm. */
247 uint16_t md_keylen; /* Key length. */
248 uint16_t md_aalgo; /* Authentication algorithm. */
249 uint64_t md_provsize; /* Provider's size. */
250 uint32_t md_sectorsize; /* Sector size. */
251 uint8_t md_keys; /* Available keys. */
252 int32_t md_iterations; /* Number of iterations for PKCS#5v2. */
253 uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */
254 /* Encrypted master key (IV-key, Data-key, HMAC). */
255 uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN];
256 u_char md_hash[16]; /* MD5 hash. */
260 eli_metadata_encode_v0(struct g_eli_metadata *md, u_char **datap)
265 le32enc(p, md->md_flags); p += sizeof(md->md_flags);
266 le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo);
267 le16enc(p, md->md_keylen); p += sizeof(md->md_keylen);
268 le64enc(p, md->md_provsize); p += sizeof(md->md_provsize);
269 le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize);
270 *p = md->md_keys; p += sizeof(md->md_keys);
271 le32enc(p, md->md_iterations); p += sizeof(md->md_iterations);
272 bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt);
273 bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys);
277 eli_metadata_encode_v1v2v3v4v5v6v7(struct g_eli_metadata *md, u_char **datap)
282 le32enc(p, md->md_flags); p += sizeof(md->md_flags);
283 le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo);
284 le16enc(p, md->md_keylen); p += sizeof(md->md_keylen);
285 le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo);
286 le64enc(p, md->md_provsize); p += sizeof(md->md_provsize);
287 le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize);
288 *p = md->md_keys; p += sizeof(md->md_keys);
289 le32enc(p, md->md_iterations); p += sizeof(md->md_iterations);
290 bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt);
291 bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys);
295 eli_metadata_encode(struct g_eli_metadata *md, u_char *data)
301 bcopy(md->md_magic, p, sizeof(md->md_magic));
302 p += sizeof(md->md_magic);
303 le32enc(p, md->md_version);
304 p += sizeof(md->md_version);
305 switch (md->md_version) {
306 case G_ELI_VERSION_00:
307 eli_metadata_encode_v0(md, &p);
309 case G_ELI_VERSION_01:
310 case G_ELI_VERSION_02:
311 case G_ELI_VERSION_03:
312 case G_ELI_VERSION_04:
313 case G_ELI_VERSION_05:
314 case G_ELI_VERSION_06:
315 case G_ELI_VERSION_07:
316 eli_metadata_encode_v1v2v3v4v5v6v7(md, &p);
320 panic("%s: Unsupported version %u.", __func__,
321 (u_int)md->md_version);
323 assert(!"Unsupported metadata version.");
327 MD5Update(&ctx, data, p - data);
328 MD5Final(md->md_hash, &ctx);
329 bcopy(md->md_hash, p, sizeof(md->md_hash));
332 eli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md)
337 p = data + sizeof(md->md_magic) + sizeof(md->md_version);
338 md->md_flags = le32dec(p); p += sizeof(md->md_flags);
339 md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo);
340 md->md_keylen = le16dec(p); p += sizeof(md->md_keylen);
341 md->md_provsize = le64dec(p); p += sizeof(md->md_provsize);
342 md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize);
343 md->md_keys = *p; p += sizeof(md->md_keys);
344 md->md_iterations = le32dec(p); p += sizeof(md->md_iterations);
345 bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt);
346 bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys);
348 MD5Update(&ctx, data, p - data);
349 MD5Final(md->md_hash, &ctx);
350 if (bcmp(md->md_hash, p, 16) != 0)
356 eli_metadata_decode_v1v2v3v4v5v6v7(const u_char *data, struct g_eli_metadata *md)
361 p = data + sizeof(md->md_magic) + sizeof(md->md_version);
362 md->md_flags = le32dec(p); p += sizeof(md->md_flags);
363 md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo);
364 md->md_keylen = le16dec(p); p += sizeof(md->md_keylen);
365 md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo);
366 md->md_provsize = le64dec(p); p += sizeof(md->md_provsize);
367 md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize);
368 md->md_keys = *p; p += sizeof(md->md_keys);
369 md->md_iterations = le32dec(p); p += sizeof(md->md_iterations);
370 bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt);
371 bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys);
373 MD5Update(&ctx, data, p - data);
374 MD5Final(md->md_hash, &ctx);
375 if (bcmp(md->md_hash, p, 16) != 0)
380 eli_metadata_decode(const u_char *data, struct g_eli_metadata *md)
384 bcopy(data, md->md_magic, sizeof(md->md_magic));
385 if (strcmp(md->md_magic, G_ELI_MAGIC) != 0)
387 md->md_version = le32dec(data + sizeof(md->md_magic));
388 switch (md->md_version) {
389 case G_ELI_VERSION_00:
390 error = eli_metadata_decode_v0(data, md);
392 case G_ELI_VERSION_01:
393 case G_ELI_VERSION_02:
394 case G_ELI_VERSION_03:
395 case G_ELI_VERSION_04:
396 case G_ELI_VERSION_05:
397 case G_ELI_VERSION_06:
398 case G_ELI_VERSION_07:
399 error = eli_metadata_decode_v1v2v3v4v5v6v7(data, md);
407 #endif /* !_OpenSSL */
409 static __inline u_int
410 g_eli_str2ealgo(const char *name)
413 if (strcasecmp("null", name) == 0)
414 return (CRYPTO_NULL_CBC);
415 else if (strcasecmp("null-cbc", name) == 0)
416 return (CRYPTO_NULL_CBC);
417 else if (strcasecmp("aes", name) == 0)
418 return (CRYPTO_AES_XTS);
419 else if (strcasecmp("aes-cbc", name) == 0)
420 return (CRYPTO_AES_CBC);
421 else if (strcasecmp("aes-xts", name) == 0)
422 return (CRYPTO_AES_XTS);
423 else if (strcasecmp("blowfish", name) == 0)
424 return (CRYPTO_BLF_CBC);
425 else if (strcasecmp("blowfish-cbc", name) == 0)
426 return (CRYPTO_BLF_CBC);
427 else if (strcasecmp("camellia", name) == 0)
428 return (CRYPTO_CAMELLIA_CBC);
429 else if (strcasecmp("camellia-cbc", name) == 0)
430 return (CRYPTO_CAMELLIA_CBC);
431 else if (strcasecmp("3des", name) == 0)
432 return (CRYPTO_3DES_CBC);
433 else if (strcasecmp("3des-cbc", name) == 0)
434 return (CRYPTO_3DES_CBC);
435 return (CRYPTO_ALGORITHM_MIN - 1);
438 static __inline u_int
439 g_eli_str2aalgo(const char *name)
442 if (strcasecmp("hmac/md5", name) == 0)
443 return (CRYPTO_MD5_HMAC);
444 else if (strcasecmp("hmac/sha1", name) == 0)
445 return (CRYPTO_SHA1_HMAC);
446 else if (strcasecmp("hmac/ripemd160", name) == 0)
447 return (CRYPTO_RIPEMD160_HMAC);
448 else if (strcasecmp("hmac/sha256", name) == 0)
449 return (CRYPTO_SHA2_256_HMAC);
450 else if (strcasecmp("hmac/sha384", name) == 0)
451 return (CRYPTO_SHA2_384_HMAC);
452 else if (strcasecmp("hmac/sha512", name) == 0)
453 return (CRYPTO_SHA2_512_HMAC);
454 return (CRYPTO_ALGORITHM_MIN - 1);
457 static __inline const char *
458 g_eli_algo2str(u_int algo)
462 case CRYPTO_NULL_CBC:
469 return ("Blowfish-CBC");
470 case CRYPTO_CAMELLIA_CBC:
471 return ("CAMELLIA-CBC");
472 case CRYPTO_3DES_CBC:
474 case CRYPTO_MD5_HMAC:
476 case CRYPTO_SHA1_HMAC:
477 return ("HMAC/SHA1");
478 case CRYPTO_RIPEMD160_HMAC:
479 return ("HMAC/RIPEMD160");
480 case CRYPTO_SHA2_256_HMAC:
481 return ("HMAC/SHA256");
482 case CRYPTO_SHA2_384_HMAC:
483 return ("HMAC/SHA384");
484 case CRYPTO_SHA2_512_HMAC:
485 return ("HMAC/SHA512");
491 eli_metadata_dump(const struct g_eli_metadata *md)
493 static const char hex[] = "0123456789abcdef";
494 char str[sizeof(md->md_mkeys) * 2 + 1];
497 printf(" magic: %s\n", md->md_magic);
498 printf(" version: %u\n", (u_int)md->md_version);
499 printf(" flags: 0x%x\n", (u_int)md->md_flags);
500 printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo));
501 printf(" keylen: %u\n", (u_int)md->md_keylen);
502 if (md->md_flags & G_ELI_FLAG_AUTH)
503 printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo));
504 printf(" provsize: %ju\n", (uintmax_t)md->md_provsize);
505 printf("sectorsize: %u\n", (u_int)md->md_sectorsize);
506 printf(" keys: 0x%02x\n", (u_int)md->md_keys);
507 printf("iterations: %d\n", (int)md->md_iterations);
508 bzero(str, sizeof(str));
509 for (i = 0; i < sizeof(md->md_salt); i++) {
510 str[i * 2] = hex[md->md_salt[i] >> 4];
511 str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f];
513 printf(" Salt: %s\n", str);
514 bzero(str, sizeof(str));
515 for (i = 0; i < sizeof(md->md_mkeys); i++) {
516 str[i * 2] = hex[md->md_mkeys[i] >> 4];
517 str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f];
519 printf("Master Key: %s\n", str);
520 bzero(str, sizeof(str));
521 for (i = 0; i < 16; i++) {
522 str[i * 2] = hex[md->md_hash[i] >> 4];
523 str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f];
525 printf(" MD5 hash: %s\n", str);
528 static __inline u_int
529 g_eli_keylen(u_int algo, u_int keylen)
533 case CRYPTO_NULL_CBC:
542 case CRYPTO_CAMELLIA_CBC:
566 if (keylen < 128 || keylen > 448)
568 if ((keylen % 32) != 0)
571 case CRYPTO_3DES_CBC:
572 if (keylen == 0 || keylen == 192)
580 static __inline u_int
581 g_eli_hashlen(u_int algo)
585 case CRYPTO_MD5_HMAC:
587 case CRYPTO_SHA1_HMAC:
589 case CRYPTO_RIPEMD160_HMAC:
591 case CRYPTO_SHA2_256_HMAC:
593 case CRYPTO_SHA2_384_HMAC:
595 case CRYPTO_SHA2_512_HMAC:
602 eli_metadata_softc(struct g_eli_softc *sc, const struct g_eli_metadata *md,
603 u_int sectorsize, off_t mediasize)
606 sc->sc_version = md->md_version;
608 sc->sc_crypto = G_ELI_CRYPTO_UNKNOWN;
609 sc->sc_flags = md->md_flags;
610 /* Backward compatibility. */
611 if (md->md_version < G_ELI_VERSION_04)
612 sc->sc_flags |= G_ELI_FLAG_NATIVE_BYTE_ORDER;
613 if (md->md_version < G_ELI_VERSION_05)
614 sc->sc_flags |= G_ELI_FLAG_SINGLE_KEY;
615 if (md->md_version < G_ELI_VERSION_06 &&
616 (sc->sc_flags & G_ELI_FLAG_AUTH) != 0) {
617 sc->sc_flags |= G_ELI_FLAG_FIRST_KEY;
619 if (md->md_version < G_ELI_VERSION_07)
620 sc->sc_flags |= G_ELI_FLAG_ENC_IVKEY;
621 sc->sc_ealgo = md->md_ealgo;
623 if (sc->sc_flags & G_ELI_FLAG_AUTH) {
624 sc->sc_akeylen = sizeof(sc->sc_akey) * 8;
625 sc->sc_aalgo = md->md_aalgo;
626 sc->sc_alen = g_eli_hashlen(sc->sc_aalgo);
628 sc->sc_data_per_sector = sectorsize - sc->sc_alen;
630 * Some hash functions (like SHA1 and RIPEMD160) generates hash
631 * which length is not multiple of 128 bits, but we want data
632 * length to be multiple of 128, so we can encrypt without
633 * padding. The line below rounds down data length to multiple
636 sc->sc_data_per_sector -= sc->sc_data_per_sector % 16;
638 sc->sc_bytes_per_sector =
639 (md->md_sectorsize - 1) / sc->sc_data_per_sector + 1;
640 sc->sc_bytes_per_sector *= sectorsize;
642 sc->sc_sectorsize = md->md_sectorsize;
643 sc->sc_mediasize = mediasize;
644 if (!(sc->sc_flags & G_ELI_FLAG_ONETIME))
645 sc->sc_mediasize -= sectorsize;
646 if (!(sc->sc_flags & G_ELI_FLAG_AUTH))
647 sc->sc_mediasize -= (sc->sc_mediasize % sc->sc_sectorsize);
649 sc->sc_mediasize /= sc->sc_bytes_per_sector;
650 sc->sc_mediasize *= sc->sc_sectorsize;
652 sc->sc_ekeylen = md->md_keylen;
656 int g_eli_read_metadata(struct g_class *mp, struct g_provider *pp,
657 struct g_eli_metadata *md);
658 struct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp,
659 struct g_provider *bpp, const struct g_eli_metadata *md,
660 const u_char *mkey, int nkey);
661 int g_eli_destroy(struct g_eli_softc *sc, boolean_t force);
663 int g_eli_access(struct g_provider *pp, int dr, int dw, int de);
664 void g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb);
666 void g_eli_read_done(struct bio *bp);
667 void g_eli_write_done(struct bio *bp);
668 int g_eli_crypto_rerun(struct cryptop *crp);
670 void g_eli_crypto_read(struct g_eli_softc *sc, struct bio *bp, boolean_t fromworker);
671 void g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp);
673 void g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp);
674 void g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp);
676 void g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv,
679 void g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key);
680 int g_eli_mkey_decrypt(const struct g_eli_metadata *md,
681 const unsigned char *key, unsigned char *mkey, unsigned *nkeyp);
682 int g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen,
683 unsigned char *mkey);
685 void g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey);
688 int g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize,
689 const u_char *key, size_t keysize);
690 int g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize,
691 const u_char *key, size_t keysize);
698 void g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey,
700 void g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data,
702 void g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize);
703 void g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize,
704 const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize);
706 void g_eli_key_fill(struct g_eli_softc *sc, struct g_eli_key *key,
709 void g_eli_key_init(struct g_eli_softc *sc);
710 void g_eli_key_destroy(struct g_eli_softc *sc);
711 uint8_t *g_eli_key_hold(struct g_eli_softc *sc, off_t offset, size_t blocksize);
712 void g_eli_key_drop(struct g_eli_softc *sc, uint8_t *rawkey);
714 #endif /* !_G_ELI_H_ */