g_eli.h revision 161127
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 161127 2006-08-09 18:11:14Z 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). 59148456Spjd */ 60159307Spjd#define G_ELI_VERSION 1 61148456Spjd 62161127Spjd/* ON DISK FLAGS. */ 63148456Spjd/* Use random, onetime keys. */ 64148456Spjd#define G_ELI_FLAG_ONETIME 0x00000001 65148456Spjd/* Ask for the passphrase from the kernel, before mounting root. */ 66148456Spjd#define G_ELI_FLAG_BOOT 0x00000002 67148456Spjd/* Detach on last close, if we were open for writing. */ 68148456Spjd#define G_ELI_FLAG_WO_DETACH 0x00000004 69148456Spjd/* Detach on last close. */ 70148456Spjd#define G_ELI_FLAG_RW_DETACH 0x00000008 71159307Spjd/* Provide data authentication. */ 72159307Spjd#define G_ELI_FLAG_AUTH 0x00000010 73161127Spjd/* Provider is read-only, we should deny all write attempts. */ 74161127Spjd#define G_ELI_FLAG_RO 0x00000020 75161127Spjd/* RUNTIME FLAGS. */ 76148456Spjd/* Provider was open for writing. */ 77148456Spjd#define G_ELI_FLAG_WOPEN 0x00010000 78148456Spjd/* Destroy device. */ 79148456Spjd#define G_ELI_FLAG_DESTROY 0x00020000 80148456Spjd 81148456Spjd#define SHA512_MDLEN 64 82159307Spjd#define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH 83148456Spjd 84148456Spjd#define G_ELI_MAXMKEYS 2 85148456Spjd#define G_ELI_MAXKEYLEN 64 86148456Spjd#define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN 87148456Spjd#define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN 88159307Spjd#define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN 89148456Spjd#define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN 90148456Spjd#define G_ELI_SALTLEN 64 91148456Spjd#define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN) 92148456Spjd/* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */ 93148456Spjd#define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN) 94148456Spjd 95148456Spjd#ifdef _KERNEL 96148456Spjdextern u_int g_eli_debug; 97148456Spjdextern u_int g_eli_overwrites; 98159307Spjdextern u_int g_eli_batch; 99148456Spjd 100148456Spjd#define G_ELI_CRYPTO_HW 1 101148456Spjd#define G_ELI_CRYPTO_SW 2 102148456Spjd 103148456Spjd#define G_ELI_DEBUG(lvl, ...) do { \ 104148456Spjd if (g_eli_debug >= (lvl)) { \ 105148456Spjd printf("GEOM_ELI"); \ 106148456Spjd if (g_eli_debug > 0) \ 107148456Spjd printf("[%u]", lvl); \ 108148456Spjd printf(": "); \ 109148456Spjd printf(__VA_ARGS__); \ 110148456Spjd printf("\n"); \ 111148456Spjd } \ 112148456Spjd} while (0) 113148456Spjd#define G_ELI_LOGREQ(lvl, bp, ...) do { \ 114148456Spjd if (g_eli_debug >= (lvl)) { \ 115148456Spjd printf("GEOM_ELI"); \ 116148456Spjd if (g_eli_debug > 0) \ 117148456Spjd printf("[%u]", lvl); \ 118148456Spjd printf(": "); \ 119148456Spjd printf(__VA_ARGS__); \ 120148456Spjd printf(" "); \ 121148456Spjd g_print_bio(bp); \ 122148456Spjd printf("\n"); \ 123148456Spjd } \ 124148456Spjd} while (0) 125148456Spjd 126148456Spjdstruct g_eli_worker { 127148456Spjd struct g_eli_softc *w_softc; 128148456Spjd struct proc *w_proc; 129148456Spjd u_int w_number; 130148456Spjd uint64_t w_sid; 131148456Spjd LIST_ENTRY(g_eli_worker) w_next; 132148456Spjd}; 133148456Spjd 134148456Spjdstruct g_eli_softc { 135148456Spjd struct g_geom *sc_geom; 136148456Spjd u_int sc_crypto; 137159307Spjd uint8_t sc_mkey[G_ELI_DATAIVKEYLEN]; 138159307Spjd uint8_t sc_ekey[G_ELI_DATAKEYLEN]; 139159307Spjd u_int sc_ealgo; 140159307Spjd u_int sc_ekeylen; 141159307Spjd uint8_t sc_akey[G_ELI_AUTHKEYLEN]; 142159307Spjd u_int sc_aalgo; 143159307Spjd u_int sc_akeylen; 144159307Spjd u_int sc_alen; 145159307Spjd SHA256_CTX sc_akeyctx; 146148456Spjd uint8_t sc_ivkey[G_ELI_IVKEYLEN]; 147148456Spjd SHA256_CTX sc_ivctx; 148148456Spjd int sc_nkey; 149148456Spjd uint32_t sc_flags; 150159307Spjd u_int sc_bytes_per_sector; 151159307Spjd u_int sc_data_per_sector; 152148456Spjd 153148456Spjd /* Only for software cryptography. */ 154148456Spjd struct bio_queue_head sc_queue; 155148456Spjd struct mtx sc_queue_mtx; 156148456Spjd LIST_HEAD(, g_eli_worker) sc_workers; 157148456Spjd}; 158148456Spjd#define sc_name sc_geom->name 159148456Spjd#endif /* _KERNEL */ 160148456Spjd 161148456Spjdstruct g_eli_metadata { 162148456Spjd char md_magic[16]; /* Magic value. */ 163148456Spjd uint32_t md_version; /* Version number. */ 164148456Spjd uint32_t md_flags; /* Additional flags. */ 165159307Spjd uint16_t md_ealgo; /* Encryption algorithm. */ 166148456Spjd uint16_t md_keylen; /* Key length. */ 167159307Spjd uint16_t md_aalgo; /* Authentication algorithm. */ 168148456Spjd uint64_t md_provsize; /* Provider's size. */ 169148456Spjd uint32_t md_sectorsize; /* Sector size. */ 170148456Spjd uint8_t md_keys; /* Available keys. */ 171149303Spjd int32_t md_iterations; /* Number of iterations for PKCS#5v2. */ 172148456Spjd uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */ 173148456Spjd /* Encrypted master key (IV-key, Data-key, HMAC). */ 174148456Spjd uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN]; 175148456Spjd u_char md_hash[16]; /* MD5 hash. */ 176149323Spjd} __packed; 177148456Spjd#ifndef _OpenSSL_ 178148456Spjdstatic __inline void 179148456Spjdeli_metadata_encode(struct g_eli_metadata *md, u_char *data) 180148456Spjd{ 181148456Spjd MD5_CTX ctx; 182148456Spjd u_char *p; 183148456Spjd 184148456Spjd p = data; 185148456Spjd bcopy(md->md_magic, p, sizeof(md->md_magic)); p += sizeof(md->md_magic); 186148456Spjd le32enc(p, md->md_version); p += sizeof(md->md_version); 187148456Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 188159307Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 189148456Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 190159307Spjd le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo); 191148456Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 192148456Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 193148456Spjd *p = md->md_keys; p += sizeof(md->md_keys); 194148456Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 195148456Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 196148456Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 197148456Spjd MD5Init(&ctx); 198148456Spjd MD5Update(&ctx, data, p - data); 199157305Spjd MD5Final(md->md_hash, &ctx); 200148456Spjd bcopy(md->md_hash, p, sizeof(md->md_hash)); 201148456Spjd} 202148456Spjdstatic __inline int 203148456Spjdeli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md) 204148456Spjd{ 205148456Spjd MD5_CTX ctx; 206148456Spjd const u_char *p; 207148456Spjd 208148456Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 209148456Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 210159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 211148456Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 212148456Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 213148456Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 214148456Spjd md->md_keys = *p; p += sizeof(md->md_keys); 215148456Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 216148456Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 217148456Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 218148456Spjd MD5Init(&ctx); 219148456Spjd MD5Update(&ctx, data, p - data); 220157305Spjd MD5Final(md->md_hash, &ctx); 221148456Spjd if (bcmp(md->md_hash, p, 16) != 0) 222148456Spjd return (EINVAL); 223148456Spjd return (0); 224148456Spjd} 225148456Spjdstatic __inline int 226159307Spjdeli_metadata_decode_v1(const u_char *data, struct g_eli_metadata *md) 227159307Spjd{ 228159307Spjd MD5_CTX ctx; 229159307Spjd const u_char *p; 230159307Spjd 231159307Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 232159307Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 233159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 234159307Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 235159307Spjd md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo); 236159307Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 237159307Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 238159307Spjd md->md_keys = *p; p += sizeof(md->md_keys); 239159307Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 240159307Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 241159307Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 242159307Spjd MD5Init(&ctx); 243159307Spjd MD5Update(&ctx, data, p - data); 244159307Spjd MD5Final(md->md_hash, &ctx); 245159307Spjd if (bcmp(md->md_hash, p, 16) != 0) 246159307Spjd return (EINVAL); 247159307Spjd return (0); 248159307Spjd} 249159307Spjdstatic __inline int 250148456Spjdeli_metadata_decode(const u_char *data, struct g_eli_metadata *md) 251148456Spjd{ 252148456Spjd int error; 253148456Spjd 254148456Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 255148456Spjd md->md_version = le32dec(data + sizeof(md->md_magic)); 256148456Spjd switch (md->md_version) { 257148456Spjd case 0: 258148456Spjd error = eli_metadata_decode_v0(data, md); 259148456Spjd break; 260159307Spjd case 1: 261159307Spjd error = eli_metadata_decode_v1(data, md); 262159307Spjd break; 263148456Spjd default: 264148456Spjd error = EINVAL; 265148456Spjd break; 266148456Spjd } 267148456Spjd return (error); 268148456Spjd} 269148456Spjd#endif /* !_OpenSSL */ 270148456Spjd 271148456Spjdstatic __inline u_int 272159307Spjdg_eli_str2ealgo(const char *name) 273148456Spjd{ 274148456Spjd 275148867Spjd if (strcasecmp("null", name) == 0) 276148456Spjd return (CRYPTO_NULL_CBC); 277148867Spjd else if (strcasecmp("aes", name) == 0) 278148456Spjd return (CRYPTO_AES_CBC); 279148867Spjd else if (strcasecmp("blowfish", name) == 0) 280148456Spjd return (CRYPTO_BLF_CBC); 281148867Spjd else if (strcasecmp("3des", name) == 0) 282148456Spjd return (CRYPTO_3DES_CBC); 283148456Spjd return (CRYPTO_ALGORITHM_MIN - 1); 284148456Spjd} 285148456Spjd 286159307Spjdstatic __inline u_int 287159307Spjdg_eli_str2aalgo(const char *name) 288159307Spjd{ 289159307Spjd 290159307Spjd if (strcasecmp("hmac/md5", name) == 0) 291159307Spjd return (CRYPTO_MD5_HMAC); 292159307Spjd else if (strcasecmp("hmac/sha1", name) == 0) 293159307Spjd return (CRYPTO_SHA1_HMAC); 294159307Spjd else if (strcasecmp("hmac/ripemd160", name) == 0) 295159307Spjd return (CRYPTO_RIPEMD160_HMAC); 296159307Spjd else if (strcasecmp("hmac/sha256", name) == 0) 297159307Spjd return (CRYPTO_SHA2_256_HMAC); 298159307Spjd else if (strcasecmp("hmac/sha384", name) == 0) 299159307Spjd return (CRYPTO_SHA2_384_HMAC); 300159307Spjd else if (strcasecmp("hmac/sha512", name) == 0) 301159307Spjd return (CRYPTO_SHA2_512_HMAC); 302159307Spjd return (CRYPTO_ALGORITHM_MIN - 1); 303159307Spjd} 304159307Spjd 305148456Spjdstatic __inline const char * 306148456Spjdg_eli_algo2str(u_int algo) 307148456Spjd{ 308148456Spjd 309148456Spjd switch (algo) { 310148456Spjd case CRYPTO_NULL_CBC: 311148456Spjd return ("NULL"); 312148456Spjd case CRYPTO_AES_CBC: 313159307Spjd return ("AES-CBC"); 314148456Spjd case CRYPTO_BLF_CBC: 315159307Spjd return ("Blowfish-CBC"); 316148456Spjd case CRYPTO_3DES_CBC: 317159307Spjd return ("3DES-CBC"); 318159307Spjd case CRYPTO_MD5_HMAC: 319159307Spjd return ("HMAC/MD5"); 320159307Spjd case CRYPTO_SHA1_HMAC: 321159307Spjd return ("HMAC/SHA1"); 322159307Spjd case CRYPTO_RIPEMD160_HMAC: 323159307Spjd return ("HMAC/RIPEMD160"); 324159307Spjd case CRYPTO_SHA2_256_HMAC: 325159307Spjd return ("HMAC/SHA256"); 326159307Spjd case CRYPTO_SHA2_384_HMAC: 327159307Spjd return ("HMAC/SHA384"); 328159307Spjd case CRYPTO_SHA2_512_HMAC: 329159307Spjd return ("HMAC/SHA512"); 330148456Spjd } 331148456Spjd return ("unknown"); 332148456Spjd} 333148456Spjd 334148456Spjdstatic __inline void 335148456Spjdeli_metadata_dump(const struct g_eli_metadata *md) 336148456Spjd{ 337148456Spjd static const char hex[] = "0123456789abcdef"; 338148456Spjd char str[sizeof(md->md_mkeys) * 2 + 1]; 339148456Spjd u_int i; 340148456Spjd 341148456Spjd printf(" magic: %s\n", md->md_magic); 342148456Spjd printf(" version: %u\n", (u_int)md->md_version); 343148456Spjd printf(" flags: 0x%x\n", (u_int)md->md_flags); 344159307Spjd printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo)); 345148456Spjd printf(" keylen: %u\n", (u_int)md->md_keylen); 346159307Spjd if (md->md_flags & G_ELI_FLAG_AUTH) 347159307Spjd printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo)); 348148456Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 349148456Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 350148456Spjd printf(" keys: 0x%02x\n", (u_int)md->md_keys); 351148456Spjd printf("iterations: %u\n", (u_int)md->md_iterations); 352148456Spjd bzero(str, sizeof(str)); 353148456Spjd for (i = 0; i < sizeof(md->md_salt); i++) { 354148456Spjd str[i * 2] = hex[md->md_salt[i] >> 4]; 355148456Spjd str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f]; 356148456Spjd } 357149303Spjd printf(" Salt: %s\n", str); 358148456Spjd bzero(str, sizeof(str)); 359148456Spjd for (i = 0; i < sizeof(md->md_mkeys); i++) { 360148456Spjd str[i * 2] = hex[md->md_mkeys[i] >> 4]; 361148456Spjd str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f]; 362148456Spjd } 363148456Spjd printf("Master Key: %s\n", str); 364148456Spjd bzero(str, sizeof(str)); 365148456Spjd for (i = 0; i < 16; i++) { 366148456Spjd str[i * 2] = hex[md->md_hash[i] >> 4]; 367148456Spjd str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 368148456Spjd } 369149303Spjd printf(" MD5 hash: %s\n", str); 370148456Spjd} 371148456Spjd 372148456Spjdstatic __inline u_int 373148456Spjdg_eli_keylen(u_int algo, u_int keylen) 374148456Spjd{ 375148456Spjd 376148456Spjd switch (algo) { 377148456Spjd case CRYPTO_NULL_CBC: 378148456Spjd if (keylen == 0) 379148456Spjd keylen = 64 * 8; 380148456Spjd else { 381148456Spjd if (keylen > 64 * 8) 382148456Spjd keylen = 0; 383148456Spjd } 384148456Spjd return (keylen); 385148456Spjd case CRYPTO_AES_CBC: 386148456Spjd switch (keylen) { 387148456Spjd case 0: 388148456Spjd return (128); 389148456Spjd case 128: 390148456Spjd case 192: 391148456Spjd case 256: 392148456Spjd return (keylen); 393148456Spjd default: 394148456Spjd return (0); 395148456Spjd } 396148456Spjd case CRYPTO_BLF_CBC: 397148456Spjd if (keylen == 0) 398148456Spjd return (128); 399148456Spjd if (keylen < 128 || keylen > 448) 400148456Spjd return (0); 401148456Spjd if ((keylen % 32) != 0) 402148456Spjd return (0); 403148456Spjd return (keylen); 404148456Spjd case CRYPTO_3DES_CBC: 405148456Spjd if (keylen == 0 || keylen == 192) 406148456Spjd return (192); 407148456Spjd return (0); 408148456Spjd default: 409148456Spjd return (0); 410148456Spjd } 411148456Spjd} 412148456Spjd 413159307Spjdstatic __inline u_int 414159307Spjdg_eli_hashlen(u_int algo) 415159307Spjd{ 416159307Spjd 417159307Spjd switch (algo) { 418159307Spjd case CRYPTO_MD5_HMAC: 419159307Spjd return (16); 420159307Spjd case CRYPTO_SHA1_HMAC: 421159307Spjd return (20); 422159307Spjd case CRYPTO_RIPEMD160_HMAC: 423159307Spjd return (20); 424159307Spjd case CRYPTO_SHA2_256_HMAC: 425159307Spjd return (32); 426159307Spjd case CRYPTO_SHA2_384_HMAC: 427159307Spjd return (48); 428159307Spjd case CRYPTO_SHA2_512_HMAC: 429159307Spjd return (64); 430159307Spjd } 431159307Spjd return (0); 432159307Spjd} 433159307Spjd 434148456Spjd#ifdef _KERNEL 435148456Spjdint g_eli_read_metadata(struct g_class *mp, struct g_provider *pp, 436148456Spjd struct g_eli_metadata *md); 437148456Spjdstruct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp, 438148456Spjd struct g_provider *bpp, const struct g_eli_metadata *md, 439148456Spjd const u_char *mkey, int nkey); 440148456Spjdint g_eli_destroy(struct g_eli_softc *sc, boolean_t force); 441148456Spjd 442148456Spjdint g_eli_access(struct g_provider *pp, int dr, int dw, int de); 443148456Spjdvoid g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb); 444159307Spjd 445159307Spjdvoid g_eli_read_done(struct bio *bp); 446159307Spjdvoid g_eli_write_done(struct bio *bp); 447159307Spjdint g_eli_crypto_rerun(struct cryptop *crp); 448159307Spjdvoid g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv, 449159307Spjd size_t size); 450159307Spjd 451159307Spjdvoid g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp); 452159307Spjd 453159307Spjdvoid g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp); 454159307Spjdvoid g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp); 455148456Spjd#endif 456148456Spjd 457148456Spjdvoid g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key); 458148456Spjdint g_eli_mkey_decrypt(const struct g_eli_metadata *md, 459148456Spjd const unsigned char *key, unsigned char *mkey, unsigned *nkeyp); 460148456Spjdint g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen, 461148456Spjd unsigned char *mkey); 462159307Spjd#ifdef _KERNEL 463159307Spjdvoid g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey); 464159307Spjd#endif 465148456Spjd 466148456Spjdint g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize, 467148456Spjd const u_char *key, size_t keysize); 468148456Spjdint g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize, 469148456Spjd const u_char *key, size_t keysize); 470148456Spjd 471148456Spjdstruct hmac_ctx { 472148456Spjd SHA512_CTX shactx; 473148456Spjd u_char k_opad[128]; 474148456Spjd}; 475148456Spjd 476148456Spjdvoid g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey, 477148456Spjd size_t hkeylen); 478148456Spjdvoid g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data, 479148456Spjd size_t datasize); 480148456Spjdvoid g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize); 481148456Spjdvoid g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize, 482148456Spjd const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize); 483148456Spjd#endif /* !_G_ELI_H_ */ 484