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>
50 #include <sys/queue.h>
56 #define G_ELI_CLASS_NAME "ELI"
57 #define G_ELI_MAGIC "GEOM::ELI"
58 #define G_ELI_SUFFIX ".eli"
62 * 0 - Initial version number.
63 * 1 - Added data authentication support (md_aalgo field and
64 * G_ELI_FLAG_AUTH flag).
65 * 2 - Added G_ELI_FLAG_READONLY.
66 * 3 - Added 'configure' subcommand.
67 * 4 - IV is generated from offset converted to little-endian
68 * (the G_ELI_FLAG_NATIVE_BYTE_ORDER flag will be set for older versions).
69 * 5 - Added multiple encrypton keys and AES-XTS support.
70 * 6 - Fixed usage of multiple keys for authenticated providers (the
71 * G_ELI_FLAG_FIRST_KEY flag will be set for older versions).
72 * 7 - Encryption keys are now generated from the Data Key and not from the
73 * IV Key (the G_ELI_FLAG_ENC_IVKEY flag will be set for older versions).
75 #define G_ELI_VERSION_00 0
76 #define G_ELI_VERSION_01 1
77 #define G_ELI_VERSION_02 2
78 #define G_ELI_VERSION_03 3
79 #define G_ELI_VERSION_04 4
80 #define G_ELI_VERSION_05 5
81 #define G_ELI_VERSION_06 6
82 #define G_ELI_VERSION_07 7
83 #define G_ELI_VERSION G_ELI_VERSION_07
86 /* Use random, onetime keys. */
87 #define G_ELI_FLAG_ONETIME 0x00000001
88 /* Ask for the passphrase from the kernel, before mounting root. */
89 #define G_ELI_FLAG_BOOT 0x00000002
90 /* Detach on last close, if we were open for writing. */
91 #define G_ELI_FLAG_WO_DETACH 0x00000004
92 /* Detach on last close. */
93 #define G_ELI_FLAG_RW_DETACH 0x00000008
94 /* Provide data authentication. */
95 #define G_ELI_FLAG_AUTH 0x00000010
96 /* Provider is read-only, we should deny all write attempts. */
97 #define G_ELI_FLAG_RO 0x00000020
98 /* Don't pass through BIO_DELETE requests. */
99 #define G_ELI_FLAG_NODELETE 0x00000040
100 /* This GELI supports GELIBoot */
101 #define G_ELI_FLAG_GELIBOOT 0x00000080
103 /* Provider was open for writing. */
104 #define G_ELI_FLAG_WOPEN 0x00010000
105 /* Destroy device. */
106 #define G_ELI_FLAG_DESTROY 0x00020000
107 /* Provider uses native byte-order for IV generation. */
108 #define G_ELI_FLAG_NATIVE_BYTE_ORDER 0x00040000
109 /* Provider uses single encryption key. */
110 #define G_ELI_FLAG_SINGLE_KEY 0x00080000
111 /* Device suspended. */
112 #define G_ELI_FLAG_SUSPEND 0x00100000
113 /* Provider uses first encryption key. */
114 #define G_ELI_FLAG_FIRST_KEY 0x00200000
115 /* Provider uses IV-Key for encryption key generation. */
116 #define G_ELI_FLAG_ENC_IVKEY 0x00400000
118 #define G_ELI_NEW_BIO 255
120 #define SHA512_MDLEN 64
121 #define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH
123 #define G_ELI_MAXMKEYS 2
124 #define G_ELI_MAXKEYLEN 64
125 #define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN
126 #define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN
127 #define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN
128 #define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN
129 #define G_ELI_SALTLEN 64
130 #define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN)
131 /* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */
132 #define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN)
133 #define G_ELI_OVERWRITES 5
134 /* Switch data encryption key every 2^20 blocks. */
135 #define G_ELI_KEY_SHIFT 20
137 #define G_ELI_CRYPTO_UNKNOWN 0
138 #define G_ELI_CRYPTO_HW 1
139 #define G_ELI_CRYPTO_SW 2
142 extern int g_eli_debug;
143 extern u_int g_eli_overwrites;
144 extern u_int g_eli_batch;
146 #define G_ELI_DEBUG(lvl, ...) do { \
147 if (g_eli_debug >= (lvl)) { \
148 printf("GEOM_ELI"); \
149 if (g_eli_debug > 0) \
150 printf("[%u]", lvl); \
152 printf(__VA_ARGS__); \
156 #define G_ELI_LOGREQ(lvl, bp, ...) do { \
157 if (g_eli_debug >= (lvl)) { \
158 printf("GEOM_ELI"); \
159 if (g_eli_debug > 0) \
160 printf("[%u]", lvl); \
162 printf(__VA_ARGS__); \
169 struct g_eli_worker {
170 struct g_eli_softc *w_softc;
175 LIST_ENTRY(g_eli_worker) w_next;
181 struct g_geom *sc_geom;
184 uint8_t sc_mkey[G_ELI_DATAIVKEYLEN];
185 uint8_t sc_ekey[G_ELI_DATAKEYLEN];
186 TAILQ_HEAD(, g_eli_key) sc_ekeys_queue;
187 RB_HEAD(g_eli_key_tree, g_eli_key) sc_ekeys_tree;
188 struct mtx sc_ekeys_lock;
189 uint64_t sc_ekeys_total;
190 uint64_t sc_ekeys_allocated;
193 uint8_t sc_akey[G_ELI_AUTHKEYLEN];
197 SHA256_CTX sc_akeyctx;
198 uint8_t sc_ivkey[G_ELI_IVKEYLEN];
204 size_t sc_sectorsize;
205 u_int sc_bytes_per_sector;
206 u_int sc_data_per_sector;
210 boolean_t sc_cpubind;
212 /* Only for software cryptography. */
213 struct bio_queue_head sc_queue;
214 struct mtx sc_queue_mtx;
215 LIST_HEAD(, g_eli_worker) sc_workers;
218 #define sc_name sc_geom->name
220 #define G_ELI_KEY_MAGIC 0xe11341c
223 /* Key value, must be first in the structure. */
224 uint8_t gek_key[G_ELI_DATAKEYLEN];
229 /* Reference counter. */
231 /* Keeps keys sorted by most recent use. */
232 TAILQ_ENTRY(g_eli_key) gek_next;
233 /* Keeps keys sorted by number. */
234 RB_ENTRY(g_eli_key) gek_link;
237 struct g_eli_metadata {
238 char md_magic[16]; /* Magic value. */
239 uint32_t md_version; /* Version number. */
240 uint32_t md_flags; /* Additional flags. */
241 uint16_t md_ealgo; /* Encryption algorithm. */
242 uint16_t md_keylen; /* Key length. */
243 uint16_t md_aalgo; /* Authentication algorithm. */
244 uint64_t md_provsize; /* Provider's size. */
245 uint32_t md_sectorsize; /* Sector size. */
246 uint8_t md_keys; /* Available keys. */
247 int32_t md_iterations; /* Number of iterations for PKCS#5v2. */
248 uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */
249 /* Encrypted master key (IV-key, Data-key, HMAC). */
250 uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN];
251 u_char md_hash[16]; /* MD5 hash. */
255 eli_metadata_encode_v0(struct g_eli_metadata *md, u_char **datap)
260 le32enc(p, md->md_flags); p += sizeof(md->md_flags);
261 le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo);
262 le16enc(p, md->md_keylen); p += sizeof(md->md_keylen);
263 le64enc(p, md->md_provsize); p += sizeof(md->md_provsize);
264 le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize);
265 *p = md->md_keys; p += sizeof(md->md_keys);
266 le32enc(p, md->md_iterations); p += sizeof(md->md_iterations);
267 bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt);
268 bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys);
272 eli_metadata_encode_v1v2v3v4v5v6v7(struct g_eli_metadata *md, u_char **datap)
277 le32enc(p, md->md_flags); p += sizeof(md->md_flags);
278 le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo);
279 le16enc(p, md->md_keylen); p += sizeof(md->md_keylen);
280 le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo);
281 le64enc(p, md->md_provsize); p += sizeof(md->md_provsize);
282 le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize);
283 *p = md->md_keys; p += sizeof(md->md_keys);
284 le32enc(p, md->md_iterations); p += sizeof(md->md_iterations);
285 bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt);
286 bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys);
290 eli_metadata_encode(struct g_eli_metadata *md, u_char *data)
296 bcopy(md->md_magic, p, sizeof(md->md_magic));
297 p += sizeof(md->md_magic);
298 le32enc(p, md->md_version);
299 p += sizeof(md->md_version);
300 switch (md->md_version) {
301 case G_ELI_VERSION_00:
302 eli_metadata_encode_v0(md, &p);
304 case G_ELI_VERSION_01:
305 case G_ELI_VERSION_02:
306 case G_ELI_VERSION_03:
307 case G_ELI_VERSION_04:
308 case G_ELI_VERSION_05:
309 case G_ELI_VERSION_06:
310 case G_ELI_VERSION_07:
311 eli_metadata_encode_v1v2v3v4v5v6v7(md, &p);
315 panic("%s: Unsupported version %u.", __func__,
316 (u_int)md->md_version);
318 assert(!"Unsupported metadata version.");
322 MD5Update(&ctx, data, p - data);
323 MD5Final(md->md_hash, &ctx);
324 bcopy(md->md_hash, p, sizeof(md->md_hash));
327 eli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md)
332 p = data + sizeof(md->md_magic) + sizeof(md->md_version);
333 md->md_flags = le32dec(p); p += sizeof(md->md_flags);
334 md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo);
335 md->md_keylen = le16dec(p); p += sizeof(md->md_keylen);
336 md->md_provsize = le64dec(p); p += sizeof(md->md_provsize);
337 md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize);
338 md->md_keys = *p; p += sizeof(md->md_keys);
339 md->md_iterations = le32dec(p); p += sizeof(md->md_iterations);
340 bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt);
341 bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys);
343 MD5Update(&ctx, data, p - data);
344 MD5Final(md->md_hash, &ctx);
345 if (bcmp(md->md_hash, p, 16) != 0)
351 eli_metadata_decode_v1v2v3v4v5v6v7(const u_char *data, struct g_eli_metadata *md)
356 p = data + sizeof(md->md_magic) + sizeof(md->md_version);
357 md->md_flags = le32dec(p); p += sizeof(md->md_flags);
358 md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo);
359 md->md_keylen = le16dec(p); p += sizeof(md->md_keylen);
360 md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo);
361 md->md_provsize = le64dec(p); p += sizeof(md->md_provsize);
362 md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize);
363 md->md_keys = *p; p += sizeof(md->md_keys);
364 md->md_iterations = le32dec(p); p += sizeof(md->md_iterations);
365 bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt);
366 bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys);
368 MD5Update(&ctx, data, p - data);
369 MD5Final(md->md_hash, &ctx);
370 if (bcmp(md->md_hash, p, 16) != 0)
375 eli_metadata_decode(const u_char *data, struct g_eli_metadata *md)
379 bcopy(data, md->md_magic, sizeof(md->md_magic));
380 if (strcmp(md->md_magic, G_ELI_MAGIC) != 0)
382 md->md_version = le32dec(data + sizeof(md->md_magic));
383 switch (md->md_version) {
384 case G_ELI_VERSION_00:
385 error = eli_metadata_decode_v0(data, md);
387 case G_ELI_VERSION_01:
388 case G_ELI_VERSION_02:
389 case G_ELI_VERSION_03:
390 case G_ELI_VERSION_04:
391 case G_ELI_VERSION_05:
392 case G_ELI_VERSION_06:
393 case G_ELI_VERSION_07:
394 error = eli_metadata_decode_v1v2v3v4v5v6v7(data, md);
402 #endif /* !_OpenSSL */
404 static __inline u_int
405 g_eli_str2ealgo(const char *name)
408 if (strcasecmp("null", name) == 0)
409 return (CRYPTO_NULL_CBC);
410 else if (strcasecmp("null-cbc", name) == 0)
411 return (CRYPTO_NULL_CBC);
412 else if (strcasecmp("aes", name) == 0)
413 return (CRYPTO_AES_XTS);
414 else if (strcasecmp("aes-cbc", name) == 0)
415 return (CRYPTO_AES_CBC);
416 else if (strcasecmp("aes-xts", name) == 0)
417 return (CRYPTO_AES_XTS);
418 else if (strcasecmp("blowfish", name) == 0)
419 return (CRYPTO_BLF_CBC);
420 else if (strcasecmp("blowfish-cbc", name) == 0)
421 return (CRYPTO_BLF_CBC);
422 else if (strcasecmp("camellia", name) == 0)
423 return (CRYPTO_CAMELLIA_CBC);
424 else if (strcasecmp("camellia-cbc", name) == 0)
425 return (CRYPTO_CAMELLIA_CBC);
426 else if (strcasecmp("3des", name) == 0)
427 return (CRYPTO_3DES_CBC);
428 else if (strcasecmp("3des-cbc", name) == 0)
429 return (CRYPTO_3DES_CBC);
430 return (CRYPTO_ALGORITHM_MIN - 1);
433 static __inline u_int
434 g_eli_str2aalgo(const char *name)
437 if (strcasecmp("hmac/md5", name) == 0)
438 return (CRYPTO_MD5_HMAC);
439 else if (strcasecmp("hmac/sha1", name) == 0)
440 return (CRYPTO_SHA1_HMAC);
441 else if (strcasecmp("hmac/ripemd160", name) == 0)
442 return (CRYPTO_RIPEMD160_HMAC);
443 else if (strcasecmp("hmac/sha256", name) == 0)
444 return (CRYPTO_SHA2_256_HMAC);
445 else if (strcasecmp("hmac/sha384", name) == 0)
446 return (CRYPTO_SHA2_384_HMAC);
447 else if (strcasecmp("hmac/sha512", name) == 0)
448 return (CRYPTO_SHA2_512_HMAC);
449 return (CRYPTO_ALGORITHM_MIN - 1);
452 static __inline const char *
453 g_eli_algo2str(u_int algo)
457 case CRYPTO_NULL_CBC:
464 return ("Blowfish-CBC");
465 case CRYPTO_CAMELLIA_CBC:
466 return ("CAMELLIA-CBC");
467 case CRYPTO_3DES_CBC:
469 case CRYPTO_MD5_HMAC:
471 case CRYPTO_SHA1_HMAC:
472 return ("HMAC/SHA1");
473 case CRYPTO_RIPEMD160_HMAC:
474 return ("HMAC/RIPEMD160");
475 case CRYPTO_SHA2_256_HMAC:
476 return ("HMAC/SHA256");
477 case CRYPTO_SHA2_384_HMAC:
478 return ("HMAC/SHA384");
479 case CRYPTO_SHA2_512_HMAC:
480 return ("HMAC/SHA512");
486 eli_metadata_dump(const struct g_eli_metadata *md)
488 static const char hex[] = "0123456789abcdef";
489 char str[sizeof(md->md_mkeys) * 2 + 1];
492 printf(" magic: %s\n", md->md_magic);
493 printf(" version: %u\n", (u_int)md->md_version);
494 printf(" flags: 0x%x\n", (u_int)md->md_flags);
495 printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo));
496 printf(" keylen: %u\n", (u_int)md->md_keylen);
497 if (md->md_flags & G_ELI_FLAG_AUTH)
498 printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo));
499 printf(" provsize: %ju\n", (uintmax_t)md->md_provsize);
500 printf("sectorsize: %u\n", (u_int)md->md_sectorsize);
501 printf(" keys: 0x%02x\n", (u_int)md->md_keys);
502 printf("iterations: %u\n", (u_int)md->md_iterations);
503 bzero(str, sizeof(str));
504 for (i = 0; i < sizeof(md->md_salt); i++) {
505 str[i * 2] = hex[md->md_salt[i] >> 4];
506 str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f];
508 printf(" Salt: %s\n", str);
509 bzero(str, sizeof(str));
510 for (i = 0; i < sizeof(md->md_mkeys); i++) {
511 str[i * 2] = hex[md->md_mkeys[i] >> 4];
512 str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f];
514 printf("Master Key: %s\n", str);
515 bzero(str, sizeof(str));
516 for (i = 0; i < 16; i++) {
517 str[i * 2] = hex[md->md_hash[i] >> 4];
518 str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f];
520 printf(" MD5 hash: %s\n", str);
523 static __inline u_int
524 g_eli_keylen(u_int algo, u_int keylen)
528 case CRYPTO_NULL_CBC:
537 case CRYPTO_CAMELLIA_CBC:
561 if (keylen < 128 || keylen > 448)
563 if ((keylen % 32) != 0)
566 case CRYPTO_3DES_CBC:
567 if (keylen == 0 || keylen == 192)
575 static __inline u_int
576 g_eli_hashlen(u_int algo)
580 case CRYPTO_MD5_HMAC:
582 case CRYPTO_SHA1_HMAC:
584 case CRYPTO_RIPEMD160_HMAC:
586 case CRYPTO_SHA2_256_HMAC:
588 case CRYPTO_SHA2_384_HMAC:
590 case CRYPTO_SHA2_512_HMAC:
597 eli_metadata_softc(struct g_eli_softc *sc, const struct g_eli_metadata *md,
598 u_int sectorsize, off_t mediasize)
601 sc->sc_version = md->md_version;
603 sc->sc_crypto = G_ELI_CRYPTO_UNKNOWN;
604 sc->sc_flags = md->md_flags;
605 /* Backward compatibility. */
606 if (md->md_version < G_ELI_VERSION_04)
607 sc->sc_flags |= G_ELI_FLAG_NATIVE_BYTE_ORDER;
608 if (md->md_version < G_ELI_VERSION_05)
609 sc->sc_flags |= G_ELI_FLAG_SINGLE_KEY;
610 if (md->md_version < G_ELI_VERSION_06 &&
611 (sc->sc_flags & G_ELI_FLAG_AUTH) != 0) {
612 sc->sc_flags |= G_ELI_FLAG_FIRST_KEY;
614 if (md->md_version < G_ELI_VERSION_07)
615 sc->sc_flags |= G_ELI_FLAG_ENC_IVKEY;
616 sc->sc_ealgo = md->md_ealgo;
618 if (sc->sc_flags & G_ELI_FLAG_AUTH) {
619 sc->sc_akeylen = sizeof(sc->sc_akey) * 8;
620 sc->sc_aalgo = md->md_aalgo;
621 sc->sc_alen = g_eli_hashlen(sc->sc_aalgo);
623 sc->sc_data_per_sector = sectorsize - sc->sc_alen;
625 * Some hash functions (like SHA1 and RIPEMD160) generates hash
626 * which length is not multiple of 128 bits, but we want data
627 * length to be multiple of 128, so we can encrypt without
628 * padding. The line below rounds down data length to multiple
631 sc->sc_data_per_sector -= sc->sc_data_per_sector % 16;
633 sc->sc_bytes_per_sector =
634 (md->md_sectorsize - 1) / sc->sc_data_per_sector + 1;
635 sc->sc_bytes_per_sector *= sectorsize;
637 sc->sc_sectorsize = md->md_sectorsize;
638 sc->sc_mediasize = mediasize;
639 if (!(sc->sc_flags & G_ELI_FLAG_ONETIME))
640 sc->sc_mediasize -= sectorsize;
641 if (!(sc->sc_flags & G_ELI_FLAG_AUTH))
642 sc->sc_mediasize -= (sc->sc_mediasize % sc->sc_sectorsize);
644 sc->sc_mediasize /= sc->sc_bytes_per_sector;
645 sc->sc_mediasize *= sc->sc_sectorsize;
647 sc->sc_ekeylen = md->md_keylen;
651 int g_eli_read_metadata(struct g_class *mp, struct g_provider *pp,
652 struct g_eli_metadata *md);
653 struct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp,
654 struct g_provider *bpp, const struct g_eli_metadata *md,
655 const u_char *mkey, int nkey);
656 int g_eli_destroy(struct g_eli_softc *sc, boolean_t force);
658 int g_eli_access(struct g_provider *pp, int dr, int dw, int de);
659 void g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb);
661 void g_eli_read_done(struct bio *bp);
662 void g_eli_write_done(struct bio *bp);
663 int g_eli_crypto_rerun(struct cryptop *crp);
665 void g_eli_crypto_read(struct g_eli_softc *sc, struct bio *bp, boolean_t fromworker);
666 void g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp);
668 void g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp);
669 void g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp);
671 void g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv,
674 void g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key);
675 int g_eli_mkey_decrypt(const struct g_eli_metadata *md,
676 const unsigned char *key, unsigned char *mkey, unsigned *nkeyp);
677 int g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen,
678 unsigned char *mkey);
680 void g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey);
683 int g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize,
684 const u_char *key, size_t keysize);
685 int g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize,
686 const u_char *key, size_t keysize);
693 void g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey,
695 void g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data,
697 void g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize);
698 void g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize,
699 const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize);
701 void g_eli_key_fill(struct g_eli_softc *sc, struct g_eli_key *key,
704 void g_eli_key_init(struct g_eli_softc *sc);
705 void g_eli_key_destroy(struct g_eli_softc *sc);
706 uint8_t *g_eli_key_hold(struct g_eli_softc *sc, off_t offset, size_t blocksize);
707 void g_eli_key_drop(struct g_eli_softc *sc, uint8_t *rawkey);
709 #endif /* !_G_ELI_H_ */