g_eli.h revision 161217
1148456Spjd/*- 2148456Spjd * Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3148456Spjd * All rights reserved. 4148456Spjd * 5148456Spjd * Redistribution and use in source and binary forms, with or without 6148456Spjd * modification, are permitted provided that the following conditions 7148456Spjd * are met: 8148456Spjd * 1. Redistributions of source code must retain the above copyright 9148456Spjd * notice, this list of conditions and the following disclaimer. 10148456Spjd * 2. Redistributions in binary form must reproduce the above copyright 11148456Spjd * notice, this list of conditions and the following disclaimer in the 12148456Spjd * documentation and/or other materials provided with the distribution. 13155174Spjd * 14148456Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15148456Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16148456Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17148456Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18148456Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19148456Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20148456Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21148456Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22148456Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23148456Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24148456Spjd * SUCH DAMAGE. 25148456Spjd * 26148456Spjd * $FreeBSD: head/sys/geom/eli/g_eli.h 161217 2006-08-11 18:39:58Z pjd $ 27148456Spjd */ 28148456Spjd 29148456Spjd#ifndef _G_ELI_H_ 30148456Spjd#define _G_ELI_H_ 31148456Spjd 32148456Spjd#include <sys/endian.h> 33148456Spjd#include <sys/errno.h> 34148456Spjd#include <sys/malloc.h> 35148456Spjd#include <crypto/sha2/sha2.h> 36148456Spjd#include <opencrypto/cryptodev.h> 37148456Spjd#ifdef _KERNEL 38148456Spjd#include <sys/bio.h> 39148456Spjd#include <sys/libkern.h> 40148456Spjd#include <geom/geom.h> 41148456Spjd#else 42148456Spjd#include <stdio.h> 43148456Spjd#include <string.h> 44148867Spjd#include <strings.h> 45148456Spjd#endif 46148456Spjd#ifndef _OpenSSL_ 47148456Spjd#include <sys/md5.h> 48148456Spjd#endif 49148456Spjd 50148456Spjd#define G_ELI_CLASS_NAME "ELI" 51148456Spjd#define G_ELI_MAGIC "GEOM::ELI" 52148456Spjd#define G_ELI_SUFFIX ".eli" 53148456Spjd 54148456Spjd/* 55148456Spjd * Version history: 56148456Spjd * 0 - Initial version number. 57159307Spjd * 1 - Added data authentication support (md_aalgo field and 58159307Spjd * G_ELI_FLAG_AUTH flag). 59161217Spjd * 2 - Added G_ELI_FLAG_READONLY. 60148456Spjd */ 61161217Spjd#define G_ELI_VERSION 2 62148456Spjd 63161127Spjd/* ON DISK FLAGS. */ 64148456Spjd/* Use random, onetime keys. */ 65148456Spjd#define G_ELI_FLAG_ONETIME 0x00000001 66148456Spjd/* Ask for the passphrase from the kernel, before mounting root. */ 67148456Spjd#define G_ELI_FLAG_BOOT 0x00000002 68148456Spjd/* Detach on last close, if we were open for writing. */ 69148456Spjd#define G_ELI_FLAG_WO_DETACH 0x00000004 70148456Spjd/* Detach on last close. */ 71148456Spjd#define G_ELI_FLAG_RW_DETACH 0x00000008 72159307Spjd/* Provide data authentication. */ 73159307Spjd#define G_ELI_FLAG_AUTH 0x00000010 74161127Spjd/* Provider is read-only, we should deny all write attempts. */ 75161127Spjd#define G_ELI_FLAG_RO 0x00000020 76161127Spjd/* RUNTIME FLAGS. */ 77148456Spjd/* Provider was open for writing. */ 78148456Spjd#define G_ELI_FLAG_WOPEN 0x00010000 79148456Spjd/* Destroy device. */ 80148456Spjd#define G_ELI_FLAG_DESTROY 0x00020000 81148456Spjd 82148456Spjd#define SHA512_MDLEN 64 83159307Spjd#define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH 84148456Spjd 85148456Spjd#define G_ELI_MAXMKEYS 2 86148456Spjd#define G_ELI_MAXKEYLEN 64 87148456Spjd#define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN 88148456Spjd#define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN 89159307Spjd#define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN 90148456Spjd#define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN 91148456Spjd#define G_ELI_SALTLEN 64 92148456Spjd#define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN) 93148456Spjd/* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */ 94148456Spjd#define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN) 95148456Spjd 96148456Spjd#ifdef _KERNEL 97148456Spjdextern u_int g_eli_debug; 98148456Spjdextern u_int g_eli_overwrites; 99159307Spjdextern u_int g_eli_batch; 100148456Spjd 101148456Spjd#define G_ELI_CRYPTO_HW 1 102148456Spjd#define G_ELI_CRYPTO_SW 2 103148456Spjd 104148456Spjd#define G_ELI_DEBUG(lvl, ...) do { \ 105148456Spjd if (g_eli_debug >= (lvl)) { \ 106148456Spjd printf("GEOM_ELI"); \ 107148456Spjd if (g_eli_debug > 0) \ 108148456Spjd printf("[%u]", lvl); \ 109148456Spjd printf(": "); \ 110148456Spjd printf(__VA_ARGS__); \ 111148456Spjd printf("\n"); \ 112148456Spjd } \ 113148456Spjd} while (0) 114148456Spjd#define G_ELI_LOGREQ(lvl, bp, ...) do { \ 115148456Spjd if (g_eli_debug >= (lvl)) { \ 116148456Spjd printf("GEOM_ELI"); \ 117148456Spjd if (g_eli_debug > 0) \ 118148456Spjd printf("[%u]", lvl); \ 119148456Spjd printf(": "); \ 120148456Spjd printf(__VA_ARGS__); \ 121148456Spjd printf(" "); \ 122148456Spjd g_print_bio(bp); \ 123148456Spjd printf("\n"); \ 124148456Spjd } \ 125148456Spjd} while (0) 126148456Spjd 127148456Spjdstruct g_eli_worker { 128148456Spjd struct g_eli_softc *w_softc; 129148456Spjd struct proc *w_proc; 130148456Spjd u_int w_number; 131148456Spjd uint64_t w_sid; 132148456Spjd LIST_ENTRY(g_eli_worker) w_next; 133148456Spjd}; 134148456Spjd 135148456Spjdstruct g_eli_softc { 136148456Spjd struct g_geom *sc_geom; 137148456Spjd u_int sc_crypto; 138159307Spjd uint8_t sc_mkey[G_ELI_DATAIVKEYLEN]; 139159307Spjd uint8_t sc_ekey[G_ELI_DATAKEYLEN]; 140159307Spjd u_int sc_ealgo; 141159307Spjd u_int sc_ekeylen; 142159307Spjd uint8_t sc_akey[G_ELI_AUTHKEYLEN]; 143159307Spjd u_int sc_aalgo; 144159307Spjd u_int sc_akeylen; 145159307Spjd u_int sc_alen; 146159307Spjd SHA256_CTX sc_akeyctx; 147148456Spjd uint8_t sc_ivkey[G_ELI_IVKEYLEN]; 148148456Spjd SHA256_CTX sc_ivctx; 149148456Spjd int sc_nkey; 150148456Spjd uint32_t sc_flags; 151159307Spjd u_int sc_bytes_per_sector; 152159307Spjd u_int sc_data_per_sector; 153148456Spjd 154148456Spjd /* Only for software cryptography. */ 155148456Spjd struct bio_queue_head sc_queue; 156148456Spjd struct mtx sc_queue_mtx; 157148456Spjd LIST_HEAD(, g_eli_worker) sc_workers; 158148456Spjd}; 159148456Spjd#define sc_name sc_geom->name 160148456Spjd#endif /* _KERNEL */ 161148456Spjd 162148456Spjdstruct g_eli_metadata { 163148456Spjd char md_magic[16]; /* Magic value. */ 164148456Spjd uint32_t md_version; /* Version number. */ 165148456Spjd uint32_t md_flags; /* Additional flags. */ 166159307Spjd uint16_t md_ealgo; /* Encryption algorithm. */ 167148456Spjd uint16_t md_keylen; /* Key length. */ 168159307Spjd uint16_t md_aalgo; /* Authentication algorithm. */ 169148456Spjd uint64_t md_provsize; /* Provider's size. */ 170148456Spjd uint32_t md_sectorsize; /* Sector size. */ 171148456Spjd uint8_t md_keys; /* Available keys. */ 172149303Spjd int32_t md_iterations; /* Number of iterations for PKCS#5v2. */ 173148456Spjd uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */ 174148456Spjd /* Encrypted master key (IV-key, Data-key, HMAC). */ 175148456Spjd uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN]; 176148456Spjd u_char md_hash[16]; /* MD5 hash. */ 177149323Spjd} __packed; 178148456Spjd#ifndef _OpenSSL_ 179148456Spjdstatic __inline void 180148456Spjdeli_metadata_encode(struct g_eli_metadata *md, u_char *data) 181148456Spjd{ 182148456Spjd MD5_CTX ctx; 183148456Spjd u_char *p; 184148456Spjd 185148456Spjd p = data; 186148456Spjd bcopy(md->md_magic, p, sizeof(md->md_magic)); p += sizeof(md->md_magic); 187148456Spjd le32enc(p, md->md_version); p += sizeof(md->md_version); 188148456Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 189159307Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 190148456Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 191159307Spjd le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo); 192148456Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 193148456Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 194148456Spjd *p = md->md_keys; p += sizeof(md->md_keys); 195148456Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 196148456Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 197148456Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 198148456Spjd MD5Init(&ctx); 199148456Spjd MD5Update(&ctx, data, p - data); 200157305Spjd MD5Final(md->md_hash, &ctx); 201148456Spjd bcopy(md->md_hash, p, sizeof(md->md_hash)); 202148456Spjd} 203148456Spjdstatic __inline int 204148456Spjdeli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md) 205148456Spjd{ 206148456Spjd MD5_CTX ctx; 207148456Spjd const u_char *p; 208148456Spjd 209148456Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 210148456Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 211159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 212148456Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 213148456Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 214148456Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 215148456Spjd md->md_keys = *p; p += sizeof(md->md_keys); 216148456Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 217148456Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 218148456Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 219148456Spjd MD5Init(&ctx); 220148456Spjd MD5Update(&ctx, data, p - data); 221157305Spjd MD5Final(md->md_hash, &ctx); 222148456Spjd if (bcmp(md->md_hash, p, 16) != 0) 223148456Spjd return (EINVAL); 224148456Spjd return (0); 225148456Spjd} 226148456Spjdstatic __inline int 227161217Spjdeli_metadata_decode_v1v2(const u_char *data, struct g_eli_metadata *md) 228159307Spjd{ 229159307Spjd MD5_CTX ctx; 230159307Spjd const u_char *p; 231159307Spjd 232159307Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 233159307Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 234159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 235159307Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 236159307Spjd md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo); 237159307Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 238159307Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 239159307Spjd md->md_keys = *p; p += sizeof(md->md_keys); 240159307Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 241159307Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 242159307Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 243159307Spjd MD5Init(&ctx); 244159307Spjd MD5Update(&ctx, data, p - data); 245159307Spjd MD5Final(md->md_hash, &ctx); 246159307Spjd if (bcmp(md->md_hash, p, 16) != 0) 247159307Spjd return (EINVAL); 248159307Spjd return (0); 249159307Spjd} 250159307Spjdstatic __inline int 251148456Spjdeli_metadata_decode(const u_char *data, struct g_eli_metadata *md) 252148456Spjd{ 253148456Spjd int error; 254148456Spjd 255148456Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 256148456Spjd md->md_version = le32dec(data + sizeof(md->md_magic)); 257148456Spjd switch (md->md_version) { 258148456Spjd case 0: 259148456Spjd error = eli_metadata_decode_v0(data, md); 260148456Spjd break; 261159307Spjd case 1: 262161217Spjd case 2: 263161217Spjd error = eli_metadata_decode_v1v2(data, md); 264159307Spjd break; 265148456Spjd default: 266148456Spjd error = EINVAL; 267148456Spjd break; 268148456Spjd } 269148456Spjd return (error); 270148456Spjd} 271148456Spjd#endif /* !_OpenSSL */ 272148456Spjd 273148456Spjdstatic __inline u_int 274159307Spjdg_eli_str2ealgo(const char *name) 275148456Spjd{ 276148456Spjd 277148867Spjd if (strcasecmp("null", name) == 0) 278148456Spjd return (CRYPTO_NULL_CBC); 279148867Spjd else if (strcasecmp("aes", name) == 0) 280148456Spjd return (CRYPTO_AES_CBC); 281148867Spjd else if (strcasecmp("blowfish", name) == 0) 282148456Spjd return (CRYPTO_BLF_CBC); 283148867Spjd else if (strcasecmp("3des", name) == 0) 284148456Spjd return (CRYPTO_3DES_CBC); 285148456Spjd return (CRYPTO_ALGORITHM_MIN - 1); 286148456Spjd} 287148456Spjd 288159307Spjdstatic __inline u_int 289159307Spjdg_eli_str2aalgo(const char *name) 290159307Spjd{ 291159307Spjd 292159307Spjd if (strcasecmp("hmac/md5", name) == 0) 293159307Spjd return (CRYPTO_MD5_HMAC); 294159307Spjd else if (strcasecmp("hmac/sha1", name) == 0) 295159307Spjd return (CRYPTO_SHA1_HMAC); 296159307Spjd else if (strcasecmp("hmac/ripemd160", name) == 0) 297159307Spjd return (CRYPTO_RIPEMD160_HMAC); 298159307Spjd else if (strcasecmp("hmac/sha256", name) == 0) 299159307Spjd return (CRYPTO_SHA2_256_HMAC); 300159307Spjd else if (strcasecmp("hmac/sha384", name) == 0) 301159307Spjd return (CRYPTO_SHA2_384_HMAC); 302159307Spjd else if (strcasecmp("hmac/sha512", name) == 0) 303159307Spjd return (CRYPTO_SHA2_512_HMAC); 304159307Spjd return (CRYPTO_ALGORITHM_MIN - 1); 305159307Spjd} 306159307Spjd 307148456Spjdstatic __inline const char * 308148456Spjdg_eli_algo2str(u_int algo) 309148456Spjd{ 310148456Spjd 311148456Spjd switch (algo) { 312148456Spjd case CRYPTO_NULL_CBC: 313148456Spjd return ("NULL"); 314148456Spjd case CRYPTO_AES_CBC: 315159307Spjd return ("AES-CBC"); 316148456Spjd case CRYPTO_BLF_CBC: 317159307Spjd return ("Blowfish-CBC"); 318148456Spjd case CRYPTO_3DES_CBC: 319159307Spjd return ("3DES-CBC"); 320159307Spjd case CRYPTO_MD5_HMAC: 321159307Spjd return ("HMAC/MD5"); 322159307Spjd case CRYPTO_SHA1_HMAC: 323159307Spjd return ("HMAC/SHA1"); 324159307Spjd case CRYPTO_RIPEMD160_HMAC: 325159307Spjd return ("HMAC/RIPEMD160"); 326159307Spjd case CRYPTO_SHA2_256_HMAC: 327159307Spjd return ("HMAC/SHA256"); 328159307Spjd case CRYPTO_SHA2_384_HMAC: 329159307Spjd return ("HMAC/SHA384"); 330159307Spjd case CRYPTO_SHA2_512_HMAC: 331159307Spjd return ("HMAC/SHA512"); 332148456Spjd } 333148456Spjd return ("unknown"); 334148456Spjd} 335148456Spjd 336148456Spjdstatic __inline void 337148456Spjdeli_metadata_dump(const struct g_eli_metadata *md) 338148456Spjd{ 339148456Spjd static const char hex[] = "0123456789abcdef"; 340148456Spjd char str[sizeof(md->md_mkeys) * 2 + 1]; 341148456Spjd u_int i; 342148456Spjd 343148456Spjd printf(" magic: %s\n", md->md_magic); 344148456Spjd printf(" version: %u\n", (u_int)md->md_version); 345148456Spjd printf(" flags: 0x%x\n", (u_int)md->md_flags); 346159307Spjd printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo)); 347148456Spjd printf(" keylen: %u\n", (u_int)md->md_keylen); 348159307Spjd if (md->md_flags & G_ELI_FLAG_AUTH) 349159307Spjd printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo)); 350148456Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 351148456Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 352148456Spjd printf(" keys: 0x%02x\n", (u_int)md->md_keys); 353148456Spjd printf("iterations: %u\n", (u_int)md->md_iterations); 354148456Spjd bzero(str, sizeof(str)); 355148456Spjd for (i = 0; i < sizeof(md->md_salt); i++) { 356148456Spjd str[i * 2] = hex[md->md_salt[i] >> 4]; 357148456Spjd str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f]; 358148456Spjd } 359149303Spjd printf(" Salt: %s\n", str); 360148456Spjd bzero(str, sizeof(str)); 361148456Spjd for (i = 0; i < sizeof(md->md_mkeys); i++) { 362148456Spjd str[i * 2] = hex[md->md_mkeys[i] >> 4]; 363148456Spjd str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f]; 364148456Spjd } 365148456Spjd printf("Master Key: %s\n", str); 366148456Spjd bzero(str, sizeof(str)); 367148456Spjd for (i = 0; i < 16; i++) { 368148456Spjd str[i * 2] = hex[md->md_hash[i] >> 4]; 369148456Spjd str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 370148456Spjd } 371149303Spjd printf(" MD5 hash: %s\n", str); 372148456Spjd} 373148456Spjd 374148456Spjdstatic __inline u_int 375148456Spjdg_eli_keylen(u_int algo, u_int keylen) 376148456Spjd{ 377148456Spjd 378148456Spjd switch (algo) { 379148456Spjd case CRYPTO_NULL_CBC: 380148456Spjd if (keylen == 0) 381148456Spjd keylen = 64 * 8; 382148456Spjd else { 383148456Spjd if (keylen > 64 * 8) 384148456Spjd keylen = 0; 385148456Spjd } 386148456Spjd return (keylen); 387148456Spjd case CRYPTO_AES_CBC: 388148456Spjd switch (keylen) { 389148456Spjd case 0: 390148456Spjd return (128); 391148456Spjd case 128: 392148456Spjd case 192: 393148456Spjd case 256: 394148456Spjd return (keylen); 395148456Spjd default: 396148456Spjd return (0); 397148456Spjd } 398148456Spjd case CRYPTO_BLF_CBC: 399148456Spjd if (keylen == 0) 400148456Spjd return (128); 401148456Spjd if (keylen < 128 || keylen > 448) 402148456Spjd return (0); 403148456Spjd if ((keylen % 32) != 0) 404148456Spjd return (0); 405148456Spjd return (keylen); 406148456Spjd case CRYPTO_3DES_CBC: 407148456Spjd if (keylen == 0 || keylen == 192) 408148456Spjd return (192); 409148456Spjd return (0); 410148456Spjd default: 411148456Spjd return (0); 412148456Spjd } 413148456Spjd} 414148456Spjd 415159307Spjdstatic __inline u_int 416159307Spjdg_eli_hashlen(u_int algo) 417159307Spjd{ 418159307Spjd 419159307Spjd switch (algo) { 420159307Spjd case CRYPTO_MD5_HMAC: 421159307Spjd return (16); 422159307Spjd case CRYPTO_SHA1_HMAC: 423159307Spjd return (20); 424159307Spjd case CRYPTO_RIPEMD160_HMAC: 425159307Spjd return (20); 426159307Spjd case CRYPTO_SHA2_256_HMAC: 427159307Spjd return (32); 428159307Spjd case CRYPTO_SHA2_384_HMAC: 429159307Spjd return (48); 430159307Spjd case CRYPTO_SHA2_512_HMAC: 431159307Spjd return (64); 432159307Spjd } 433159307Spjd return (0); 434159307Spjd} 435159307Spjd 436148456Spjd#ifdef _KERNEL 437148456Spjdint g_eli_read_metadata(struct g_class *mp, struct g_provider *pp, 438148456Spjd struct g_eli_metadata *md); 439148456Spjdstruct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp, 440148456Spjd struct g_provider *bpp, const struct g_eli_metadata *md, 441148456Spjd const u_char *mkey, int nkey); 442148456Spjdint g_eli_destroy(struct g_eli_softc *sc, boolean_t force); 443148456Spjd 444148456Spjdint g_eli_access(struct g_provider *pp, int dr, int dw, int de); 445148456Spjdvoid g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb); 446159307Spjd 447159307Spjdvoid g_eli_read_done(struct bio *bp); 448159307Spjdvoid g_eli_write_done(struct bio *bp); 449159307Spjdint g_eli_crypto_rerun(struct cryptop *crp); 450159307Spjdvoid g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv, 451159307Spjd size_t size); 452159307Spjd 453159307Spjdvoid g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp); 454159307Spjd 455159307Spjdvoid g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp); 456159307Spjdvoid g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp); 457148456Spjd#endif 458148456Spjd 459148456Spjdvoid g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key); 460148456Spjdint g_eli_mkey_decrypt(const struct g_eli_metadata *md, 461148456Spjd const unsigned char *key, unsigned char *mkey, unsigned *nkeyp); 462148456Spjdint g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen, 463148456Spjd unsigned char *mkey); 464159307Spjd#ifdef _KERNEL 465159307Spjdvoid g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey); 466159307Spjd#endif 467148456Spjd 468148456Spjdint g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize, 469148456Spjd const u_char *key, size_t keysize); 470148456Spjdint g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize, 471148456Spjd const u_char *key, size_t keysize); 472148456Spjd 473148456Spjdstruct hmac_ctx { 474148456Spjd SHA512_CTX shactx; 475148456Spjd u_char k_opad[128]; 476148456Spjd}; 477148456Spjd 478148456Spjdvoid g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey, 479148456Spjd size_t hkeylen); 480148456Spjdvoid g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data, 481148456Spjd size_t datasize); 482148456Spjdvoid g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize); 483148456Spjdvoid g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize, 484148456Spjd const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize); 485148456Spjd#endif /* !_G_ELI_H_ */ 486