g_eli.h revision 212845
1148456Spjd/*- 2161220Spjd * Copyright (c) 2005-2006 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 212845 2010-09-19 10:45:53Z brian $ 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. 60211927Spjd * 3 - Added 'configure' subcommand. 61211927Spjd * 4 - IV is generated from offset converted to little-endian 62161220Spjd * (flag G_ELI_FLAG_NATIVE_BYTE_ORDER will be set for older versions). 63148456Spjd */ 64211927Spjd#define G_ELI_VERSION 4 65148456Spjd 66161127Spjd/* ON DISK FLAGS. */ 67148456Spjd/* Use random, onetime keys. */ 68161220Spjd#define G_ELI_FLAG_ONETIME 0x00000001 69148456Spjd/* Ask for the passphrase from the kernel, before mounting root. */ 70161220Spjd#define G_ELI_FLAG_BOOT 0x00000002 71148456Spjd/* Detach on last close, if we were open for writing. */ 72161220Spjd#define G_ELI_FLAG_WO_DETACH 0x00000004 73148456Spjd/* Detach on last close. */ 74161220Spjd#define G_ELI_FLAG_RW_DETACH 0x00000008 75159307Spjd/* Provide data authentication. */ 76161220Spjd#define G_ELI_FLAG_AUTH 0x00000010 77161127Spjd/* Provider is read-only, we should deny all write attempts. */ 78161220Spjd#define G_ELI_FLAG_RO 0x00000020 79161127Spjd/* RUNTIME FLAGS. */ 80148456Spjd/* Provider was open for writing. */ 81161220Spjd#define G_ELI_FLAG_WOPEN 0x00010000 82148456Spjd/* Destroy device. */ 83161220Spjd#define G_ELI_FLAG_DESTROY 0x00020000 84161220Spjd/* Provider uses native byte-order for IV generation. */ 85161220Spjd#define G_ELI_FLAG_NATIVE_BYTE_ORDER 0x00040000 86148456Spjd 87148456Spjd#define SHA512_MDLEN 64 88159307Spjd#define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH 89148456Spjd 90148456Spjd#define G_ELI_MAXMKEYS 2 91148456Spjd#define G_ELI_MAXKEYLEN 64 92148456Spjd#define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN 93148456Spjd#define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN 94159307Spjd#define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN 95148456Spjd#define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN 96148456Spjd#define G_ELI_SALTLEN 64 97148456Spjd#define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN) 98148456Spjd/* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */ 99148456Spjd#define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN) 100148456Spjd 101148456Spjd#ifdef _KERNEL 102148456Spjdextern u_int g_eli_debug; 103148456Spjdextern u_int g_eli_overwrites; 104159307Spjdextern u_int g_eli_batch; 105148456Spjd 106148456Spjd#define G_ELI_CRYPTO_HW 1 107148456Spjd#define G_ELI_CRYPTO_SW 2 108148456Spjd 109148456Spjd#define G_ELI_DEBUG(lvl, ...) do { \ 110148456Spjd if (g_eli_debug >= (lvl)) { \ 111148456Spjd printf("GEOM_ELI"); \ 112148456Spjd if (g_eli_debug > 0) \ 113148456Spjd printf("[%u]", lvl); \ 114148456Spjd printf(": "); \ 115148456Spjd printf(__VA_ARGS__); \ 116148456Spjd printf("\n"); \ 117148456Spjd } \ 118148456Spjd} while (0) 119148456Spjd#define G_ELI_LOGREQ(lvl, bp, ...) do { \ 120148456Spjd if (g_eli_debug >= (lvl)) { \ 121148456Spjd printf("GEOM_ELI"); \ 122148456Spjd if (g_eli_debug > 0) \ 123148456Spjd printf("[%u]", lvl); \ 124148456Spjd printf(": "); \ 125148456Spjd printf(__VA_ARGS__); \ 126148456Spjd printf(" "); \ 127148456Spjd g_print_bio(bp); \ 128148456Spjd printf("\n"); \ 129148456Spjd } \ 130148456Spjd} while (0) 131148456Spjd 132148456Spjdstruct g_eli_worker { 133148456Spjd struct g_eli_softc *w_softc; 134148456Spjd struct proc *w_proc; 135148456Spjd u_int w_number; 136148456Spjd uint64_t w_sid; 137148456Spjd LIST_ENTRY(g_eli_worker) w_next; 138148456Spjd}; 139148456Spjd 140148456Spjdstruct g_eli_softc { 141148456Spjd struct g_geom *sc_geom; 142148456Spjd u_int sc_crypto; 143159307Spjd uint8_t sc_mkey[G_ELI_DATAIVKEYLEN]; 144159307Spjd uint8_t sc_ekey[G_ELI_DATAKEYLEN]; 145159307Spjd u_int sc_ealgo; 146159307Spjd u_int sc_ekeylen; 147159307Spjd uint8_t sc_akey[G_ELI_AUTHKEYLEN]; 148159307Spjd u_int sc_aalgo; 149159307Spjd u_int sc_akeylen; 150159307Spjd u_int sc_alen; 151159307Spjd SHA256_CTX sc_akeyctx; 152148456Spjd uint8_t sc_ivkey[G_ELI_IVKEYLEN]; 153148456Spjd SHA256_CTX sc_ivctx; 154148456Spjd int sc_nkey; 155148456Spjd uint32_t sc_flags; 156159307Spjd u_int sc_bytes_per_sector; 157159307Spjd u_int sc_data_per_sector; 158148456Spjd 159148456Spjd /* Only for software cryptography. */ 160148456Spjd struct bio_queue_head sc_queue; 161148456Spjd struct mtx sc_queue_mtx; 162148456Spjd LIST_HEAD(, g_eli_worker) sc_workers; 163148456Spjd}; 164148456Spjd#define sc_name sc_geom->name 165148456Spjd#endif /* _KERNEL */ 166148456Spjd 167148456Spjdstruct g_eli_metadata { 168148456Spjd char md_magic[16]; /* Magic value. */ 169148456Spjd uint32_t md_version; /* Version number. */ 170148456Spjd uint32_t md_flags; /* Additional flags. */ 171159307Spjd uint16_t md_ealgo; /* Encryption algorithm. */ 172148456Spjd uint16_t md_keylen; /* Key length. */ 173159307Spjd uint16_t md_aalgo; /* Authentication algorithm. */ 174148456Spjd uint64_t md_provsize; /* Provider's size. */ 175148456Spjd uint32_t md_sectorsize; /* Sector size. */ 176148456Spjd uint8_t md_keys; /* Available keys. */ 177149303Spjd int32_t md_iterations; /* Number of iterations for PKCS#5v2. */ 178148456Spjd uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */ 179148456Spjd /* Encrypted master key (IV-key, Data-key, HMAC). */ 180148456Spjd uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN]; 181148456Spjd u_char md_hash[16]; /* MD5 hash. */ 182149323Spjd} __packed; 183148456Spjd#ifndef _OpenSSL_ 184148456Spjdstatic __inline void 185148456Spjdeli_metadata_encode(struct g_eli_metadata *md, u_char *data) 186148456Spjd{ 187148456Spjd MD5_CTX ctx; 188148456Spjd u_char *p; 189148456Spjd 190148456Spjd p = data; 191148456Spjd bcopy(md->md_magic, p, sizeof(md->md_magic)); p += sizeof(md->md_magic); 192148456Spjd le32enc(p, md->md_version); p += sizeof(md->md_version); 193148456Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 194159307Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 195148456Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 196159307Spjd le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo); 197148456Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 198148456Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 199148456Spjd *p = md->md_keys; p += sizeof(md->md_keys); 200148456Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 201148456Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 202148456Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 203148456Spjd MD5Init(&ctx); 204148456Spjd MD5Update(&ctx, data, p - data); 205157305Spjd MD5Final(md->md_hash, &ctx); 206148456Spjd bcopy(md->md_hash, p, sizeof(md->md_hash)); 207148456Spjd} 208148456Spjdstatic __inline int 209148456Spjdeli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md) 210148456Spjd{ 211148456Spjd MD5_CTX ctx; 212148456Spjd const u_char *p; 213148456Spjd 214148456Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 215148456Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 216159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 217148456Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 218148456Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 219148456Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 220148456Spjd md->md_keys = *p; p += sizeof(md->md_keys); 221148456Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 222148456Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 223148456Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 224148456Spjd MD5Init(&ctx); 225148456Spjd MD5Update(&ctx, data, p - data); 226157305Spjd MD5Final(md->md_hash, &ctx); 227148456Spjd if (bcmp(md->md_hash, p, 16) != 0) 228148456Spjd return (EINVAL); 229148456Spjd return (0); 230148456Spjd} 231212845Sbrian 232148456Spjdstatic __inline int 233212845Sbrianeli_metadata_decode_v1v2v3v4(const u_char *data, struct g_eli_metadata *md) 234159307Spjd{ 235159307Spjd MD5_CTX ctx; 236159307Spjd const u_char *p; 237159307Spjd 238159307Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 239159307Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 240159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 241159307Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 242159307Spjd md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo); 243159307Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 244159307Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 245159307Spjd md->md_keys = *p; p += sizeof(md->md_keys); 246159307Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 247159307Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 248159307Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 249159307Spjd MD5Init(&ctx); 250159307Spjd MD5Update(&ctx, data, p - data); 251159307Spjd MD5Final(md->md_hash, &ctx); 252159307Spjd if (bcmp(md->md_hash, p, 16) != 0) 253159307Spjd return (EINVAL); 254159307Spjd return (0); 255159307Spjd} 256159307Spjdstatic __inline int 257148456Spjdeli_metadata_decode(const u_char *data, struct g_eli_metadata *md) 258148456Spjd{ 259148456Spjd int error; 260148456Spjd 261148456Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 262148456Spjd md->md_version = le32dec(data + sizeof(md->md_magic)); 263148456Spjd switch (md->md_version) { 264148456Spjd case 0: 265148456Spjd error = eli_metadata_decode_v0(data, md); 266148456Spjd break; 267159307Spjd case 1: 268161217Spjd case 2: 269162353Spjd case 3: 270212845Sbrian case 4: 271212845Sbrian error = eli_metadata_decode_v1v2v3v4(data, md); 272159307Spjd break; 273148456Spjd default: 274148456Spjd error = EINVAL; 275148456Spjd break; 276148456Spjd } 277148456Spjd return (error); 278148456Spjd} 279148456Spjd#endif /* !_OpenSSL */ 280148456Spjd 281148456Spjdstatic __inline u_int 282159307Spjdg_eli_str2ealgo(const char *name) 283148456Spjd{ 284148456Spjd 285148867Spjd if (strcasecmp("null", name) == 0) 286148456Spjd return (CRYPTO_NULL_CBC); 287148867Spjd else if (strcasecmp("aes", name) == 0) 288148456Spjd return (CRYPTO_AES_CBC); 289148867Spjd else if (strcasecmp("blowfish", name) == 0) 290148456Spjd return (CRYPTO_BLF_CBC); 291172031Spjd else if (strcasecmp("camellia", name) == 0) 292172031Spjd return (CRYPTO_CAMELLIA_CBC); 293148867Spjd else if (strcasecmp("3des", name) == 0) 294148456Spjd return (CRYPTO_3DES_CBC); 295148456Spjd return (CRYPTO_ALGORITHM_MIN - 1); 296148456Spjd} 297148456Spjd 298159307Spjdstatic __inline u_int 299159307Spjdg_eli_str2aalgo(const char *name) 300159307Spjd{ 301159307Spjd 302159307Spjd if (strcasecmp("hmac/md5", name) == 0) 303159307Spjd return (CRYPTO_MD5_HMAC); 304159307Spjd else if (strcasecmp("hmac/sha1", name) == 0) 305159307Spjd return (CRYPTO_SHA1_HMAC); 306159307Spjd else if (strcasecmp("hmac/ripemd160", name) == 0) 307159307Spjd return (CRYPTO_RIPEMD160_HMAC); 308159307Spjd else if (strcasecmp("hmac/sha256", name) == 0) 309159307Spjd return (CRYPTO_SHA2_256_HMAC); 310159307Spjd else if (strcasecmp("hmac/sha384", name) == 0) 311159307Spjd return (CRYPTO_SHA2_384_HMAC); 312159307Spjd else if (strcasecmp("hmac/sha512", name) == 0) 313159307Spjd return (CRYPTO_SHA2_512_HMAC); 314159307Spjd return (CRYPTO_ALGORITHM_MIN - 1); 315159307Spjd} 316159307Spjd 317148456Spjdstatic __inline const char * 318148456Spjdg_eli_algo2str(u_int algo) 319148456Spjd{ 320148456Spjd 321148456Spjd switch (algo) { 322148456Spjd case CRYPTO_NULL_CBC: 323148456Spjd return ("NULL"); 324148456Spjd case CRYPTO_AES_CBC: 325159307Spjd return ("AES-CBC"); 326148456Spjd case CRYPTO_BLF_CBC: 327159307Spjd return ("Blowfish-CBC"); 328172031Spjd case CRYPTO_CAMELLIA_CBC: 329172031Spjd return ("CAMELLIA-CBC"); 330148456Spjd case CRYPTO_3DES_CBC: 331159307Spjd return ("3DES-CBC"); 332159307Spjd case CRYPTO_MD5_HMAC: 333159307Spjd return ("HMAC/MD5"); 334159307Spjd case CRYPTO_SHA1_HMAC: 335159307Spjd return ("HMAC/SHA1"); 336159307Spjd case CRYPTO_RIPEMD160_HMAC: 337159307Spjd return ("HMAC/RIPEMD160"); 338159307Spjd case CRYPTO_SHA2_256_HMAC: 339159307Spjd return ("HMAC/SHA256"); 340159307Spjd case CRYPTO_SHA2_384_HMAC: 341159307Spjd return ("HMAC/SHA384"); 342159307Spjd case CRYPTO_SHA2_512_HMAC: 343159307Spjd return ("HMAC/SHA512"); 344148456Spjd } 345148456Spjd return ("unknown"); 346148456Spjd} 347148456Spjd 348148456Spjdstatic __inline void 349148456Spjdeli_metadata_dump(const struct g_eli_metadata *md) 350148456Spjd{ 351148456Spjd static const char hex[] = "0123456789abcdef"; 352148456Spjd char str[sizeof(md->md_mkeys) * 2 + 1]; 353148456Spjd u_int i; 354148456Spjd 355148456Spjd printf(" magic: %s\n", md->md_magic); 356148456Spjd printf(" version: %u\n", (u_int)md->md_version); 357148456Spjd printf(" flags: 0x%x\n", (u_int)md->md_flags); 358159307Spjd printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo)); 359148456Spjd printf(" keylen: %u\n", (u_int)md->md_keylen); 360159307Spjd if (md->md_flags & G_ELI_FLAG_AUTH) 361159307Spjd printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo)); 362148456Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 363148456Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 364148456Spjd printf(" keys: 0x%02x\n", (u_int)md->md_keys); 365148456Spjd printf("iterations: %u\n", (u_int)md->md_iterations); 366148456Spjd bzero(str, sizeof(str)); 367148456Spjd for (i = 0; i < sizeof(md->md_salt); i++) { 368148456Spjd str[i * 2] = hex[md->md_salt[i] >> 4]; 369148456Spjd str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f]; 370148456Spjd } 371149303Spjd printf(" Salt: %s\n", str); 372148456Spjd bzero(str, sizeof(str)); 373148456Spjd for (i = 0; i < sizeof(md->md_mkeys); i++) { 374148456Spjd str[i * 2] = hex[md->md_mkeys[i] >> 4]; 375148456Spjd str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f]; 376148456Spjd } 377148456Spjd printf("Master Key: %s\n", str); 378148456Spjd bzero(str, sizeof(str)); 379148456Spjd for (i = 0; i < 16; i++) { 380148456Spjd str[i * 2] = hex[md->md_hash[i] >> 4]; 381148456Spjd str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 382148456Spjd } 383149303Spjd printf(" MD5 hash: %s\n", str); 384148456Spjd} 385148456Spjd 386148456Spjdstatic __inline u_int 387148456Spjdg_eli_keylen(u_int algo, u_int keylen) 388148456Spjd{ 389148456Spjd 390148456Spjd switch (algo) { 391148456Spjd case CRYPTO_NULL_CBC: 392148456Spjd if (keylen == 0) 393148456Spjd keylen = 64 * 8; 394148456Spjd else { 395148456Spjd if (keylen > 64 * 8) 396148456Spjd keylen = 0; 397148456Spjd } 398148456Spjd return (keylen); 399211927Spjd case CRYPTO_AES_CBC: 400172031Spjd case CRYPTO_CAMELLIA_CBC: 401148456Spjd switch (keylen) { 402148456Spjd case 0: 403148456Spjd return (128); 404148456Spjd case 128: 405148456Spjd case 192: 406148456Spjd case 256: 407148456Spjd return (keylen); 408148456Spjd default: 409148456Spjd return (0); 410148456Spjd } 411148456Spjd case CRYPTO_BLF_CBC: 412148456Spjd if (keylen == 0) 413148456Spjd return (128); 414148456Spjd if (keylen < 128 || keylen > 448) 415148456Spjd return (0); 416148456Spjd if ((keylen % 32) != 0) 417148456Spjd return (0); 418148456Spjd return (keylen); 419148456Spjd case CRYPTO_3DES_CBC: 420148456Spjd if (keylen == 0 || keylen == 192) 421148456Spjd return (192); 422148456Spjd return (0); 423148456Spjd default: 424148456Spjd return (0); 425148456Spjd } 426148456Spjd} 427148456Spjd 428159307Spjdstatic __inline u_int 429159307Spjdg_eli_hashlen(u_int algo) 430159307Spjd{ 431159307Spjd 432159307Spjd switch (algo) { 433159307Spjd case CRYPTO_MD5_HMAC: 434159307Spjd return (16); 435159307Spjd case CRYPTO_SHA1_HMAC: 436159307Spjd return (20); 437159307Spjd case CRYPTO_RIPEMD160_HMAC: 438159307Spjd return (20); 439159307Spjd case CRYPTO_SHA2_256_HMAC: 440159307Spjd return (32); 441159307Spjd case CRYPTO_SHA2_384_HMAC: 442159307Spjd return (48); 443159307Spjd case CRYPTO_SHA2_512_HMAC: 444159307Spjd return (64); 445159307Spjd } 446159307Spjd return (0); 447159307Spjd} 448159307Spjd 449148456Spjd#ifdef _KERNEL 450148456Spjdint g_eli_read_metadata(struct g_class *mp, struct g_provider *pp, 451148456Spjd struct g_eli_metadata *md); 452148456Spjdstruct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp, 453148456Spjd struct g_provider *bpp, const struct g_eli_metadata *md, 454148456Spjd const u_char *mkey, int nkey); 455148456Spjdint g_eli_destroy(struct g_eli_softc *sc, boolean_t force); 456148456Spjd 457148456Spjdint g_eli_access(struct g_provider *pp, int dr, int dw, int de); 458148456Spjdvoid g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb); 459159307Spjd 460159307Spjdvoid g_eli_read_done(struct bio *bp); 461159307Spjdvoid g_eli_write_done(struct bio *bp); 462159307Spjdint g_eli_crypto_rerun(struct cryptop *crp); 463159307Spjdvoid g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv, 464159307Spjd size_t size); 465159307Spjd 466159307Spjdvoid g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp); 467159307Spjd 468159307Spjdvoid g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp); 469159307Spjdvoid g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp); 470148456Spjd#endif 471148456Spjd 472148456Spjdvoid g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key); 473148456Spjdint g_eli_mkey_decrypt(const struct g_eli_metadata *md, 474148456Spjd const unsigned char *key, unsigned char *mkey, unsigned *nkeyp); 475148456Spjdint g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen, 476148456Spjd unsigned char *mkey); 477159307Spjd#ifdef _KERNEL 478159307Spjdvoid g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey); 479159307Spjd#endif 480148456Spjd 481148456Spjdint g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize, 482148456Spjd const u_char *key, size_t keysize); 483148456Spjdint g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize, 484148456Spjd const u_char *key, size_t keysize); 485148456Spjd 486148456Spjdstruct hmac_ctx { 487148456Spjd SHA512_CTX shactx; 488148456Spjd u_char k_opad[128]; 489148456Spjd}; 490148456Spjd 491148456Spjdvoid g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey, 492148456Spjd size_t hkeylen); 493148456Spjdvoid g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data, 494148456Spjd size_t datasize); 495148456Spjdvoid g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize); 496148456Spjdvoid g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize, 497148456Spjd const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize); 498148456Spjd#endif /* !_G_ELI_H_ */ 499