g_eli.h revision 226721
1148456Spjd/*- 2220922Spjd * Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net> 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 226721 2011-10-25 07:48:53Z 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> 40220922Spjd#include <sys/lock.h> 41220922Spjd#include <sys/mutex.h> 42220922Spjd#include <sys/queue.h> 43220922Spjd#include <sys/tree.h> 44148456Spjd#include <geom/geom.h> 45148456Spjd#else 46148456Spjd#include <stdio.h> 47148456Spjd#include <string.h> 48148867Spjd#include <strings.h> 49148456Spjd#endif 50148456Spjd#ifndef _OpenSSL_ 51148456Spjd#include <sys/md5.h> 52148456Spjd#endif 53148456Spjd 54148456Spjd#define G_ELI_CLASS_NAME "ELI" 55148456Spjd#define G_ELI_MAGIC "GEOM::ELI" 56148456Spjd#define G_ELI_SUFFIX ".eli" 57148456Spjd 58148456Spjd/* 59148456Spjd * Version history: 60148456Spjd * 0 - Initial version number. 61159307Spjd * 1 - Added data authentication support (md_aalgo field and 62159307Spjd * G_ELI_FLAG_AUTH flag). 63161217Spjd * 2 - Added G_ELI_FLAG_READONLY. 64211927Spjd * 3 - Added 'configure' subcommand. 65211927Spjd * 4 - IV is generated from offset converted to little-endian 66221628Spjd * (the G_ELI_FLAG_NATIVE_BYTE_ORDER flag will be set for older versions). 67213070Spjd * 5 - Added multiple encrypton keys and AES-XTS support. 68221628Spjd * 6 - Fixed usage of multiple keys for authenticated providers (the 69221628Spjd * G_ELI_FLAG_FIRST_KEY flag will be set for older versions). 70148456Spjd */ 71221628Spjd#define G_ELI_VERSION_00 0 72221628Spjd#define G_ELI_VERSION_01 1 73221628Spjd#define G_ELI_VERSION_02 2 74221628Spjd#define G_ELI_VERSION_03 3 75221628Spjd#define G_ELI_VERSION_04 4 76221628Spjd#define G_ELI_VERSION_05 5 77221628Spjd#define G_ELI_VERSION_06 6 78221628Spjd#define G_ELI_VERSION G_ELI_VERSION_06 79148456Spjd 80161127Spjd/* ON DISK FLAGS. */ 81148456Spjd/* Use random, onetime keys. */ 82161220Spjd#define G_ELI_FLAG_ONETIME 0x00000001 83148456Spjd/* Ask for the passphrase from the kernel, before mounting root. */ 84161220Spjd#define G_ELI_FLAG_BOOT 0x00000002 85148456Spjd/* Detach on last close, if we were open for writing. */ 86161220Spjd#define G_ELI_FLAG_WO_DETACH 0x00000004 87148456Spjd/* Detach on last close. */ 88161220Spjd#define G_ELI_FLAG_RW_DETACH 0x00000008 89159307Spjd/* Provide data authentication. */ 90161220Spjd#define G_ELI_FLAG_AUTH 0x00000010 91161127Spjd/* Provider is read-only, we should deny all write attempts. */ 92161220Spjd#define G_ELI_FLAG_RO 0x00000020 93161127Spjd/* RUNTIME FLAGS. */ 94148456Spjd/* Provider was open for writing. */ 95161220Spjd#define G_ELI_FLAG_WOPEN 0x00010000 96148456Spjd/* Destroy device. */ 97161220Spjd#define G_ELI_FLAG_DESTROY 0x00020000 98161220Spjd/* Provider uses native byte-order for IV generation. */ 99161220Spjd#define G_ELI_FLAG_NATIVE_BYTE_ORDER 0x00040000 100213067Spjd/* Provider uses single encryption key. */ 101213067Spjd#define G_ELI_FLAG_SINGLE_KEY 0x00080000 102214118Spjd/* Device suspended. */ 103214118Spjd#define G_ELI_FLAG_SUSPEND 0x00100000 104221628Spjd/* Provider uses first encryption key. */ 105221628Spjd#define G_ELI_FLAG_FIRST_KEY 0x00200000 106148456Spjd 107214118Spjd#define G_ELI_NEW_BIO 255 108214118Spjd 109148456Spjd#define SHA512_MDLEN 64 110159307Spjd#define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH 111148456Spjd 112148456Spjd#define G_ELI_MAXMKEYS 2 113148456Spjd#define G_ELI_MAXKEYLEN 64 114148456Spjd#define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN 115148456Spjd#define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN 116159307Spjd#define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN 117148456Spjd#define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN 118148456Spjd#define G_ELI_SALTLEN 64 119148456Spjd#define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN) 120148456Spjd/* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */ 121148456Spjd#define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN) 122213062Spjd#define G_ELI_OVERWRITES 5 123213067Spjd/* Switch data encryption key every 2^20 blocks. */ 124213067Spjd#define G_ELI_KEY_SHIFT 20 125148456Spjd 126148456Spjd#ifdef _KERNEL 127213165Spjdextern int g_eli_debug; 128148456Spjdextern u_int g_eli_overwrites; 129159307Spjdextern u_int g_eli_batch; 130148456Spjd 131214163Spjd#define G_ELI_CRYPTO_UNKNOWN 0 132148456Spjd#define G_ELI_CRYPTO_HW 1 133148456Spjd#define G_ELI_CRYPTO_SW 2 134148456Spjd 135148456Spjd#define G_ELI_DEBUG(lvl, ...) do { \ 136148456Spjd if (g_eli_debug >= (lvl)) { \ 137148456Spjd printf("GEOM_ELI"); \ 138148456Spjd if (g_eli_debug > 0) \ 139148456Spjd printf("[%u]", lvl); \ 140148456Spjd printf(": "); \ 141148456Spjd printf(__VA_ARGS__); \ 142148456Spjd printf("\n"); \ 143148456Spjd } \ 144148456Spjd} while (0) 145148456Spjd#define G_ELI_LOGREQ(lvl, bp, ...) do { \ 146148456Spjd if (g_eli_debug >= (lvl)) { \ 147148456Spjd printf("GEOM_ELI"); \ 148148456Spjd if (g_eli_debug > 0) \ 149148456Spjd printf("[%u]", lvl); \ 150148456Spjd printf(": "); \ 151148456Spjd printf(__VA_ARGS__); \ 152148456Spjd printf(" "); \ 153148456Spjd g_print_bio(bp); \ 154148456Spjd printf("\n"); \ 155148456Spjd } \ 156148456Spjd} while (0) 157148456Spjd 158148456Spjdstruct g_eli_worker { 159148456Spjd struct g_eli_softc *w_softc; 160148456Spjd struct proc *w_proc; 161148456Spjd u_int w_number; 162148456Spjd uint64_t w_sid; 163214118Spjd boolean_t w_active; 164148456Spjd LIST_ENTRY(g_eli_worker) w_next; 165148456Spjd}; 166148456Spjd 167148456Spjdstruct g_eli_softc { 168220922Spjd struct g_geom *sc_geom; 169220922Spjd u_int sc_crypto; 170220922Spjd uint8_t sc_mkey[G_ELI_DATAIVKEYLEN]; 171220922Spjd uint8_t sc_ekey[G_ELI_DATAKEYLEN]; 172220922Spjd TAILQ_HEAD(, g_eli_key) sc_ekeys_queue; 173220922Spjd RB_HEAD(g_eli_key_tree, g_eli_key) sc_ekeys_tree; 174220922Spjd struct mtx sc_ekeys_lock; 175220922Spjd uint64_t sc_ekeys_total; 176220922Spjd uint64_t sc_ekeys_allocated; 177220922Spjd u_int sc_ealgo; 178220922Spjd u_int sc_ekeylen; 179220922Spjd uint8_t sc_akey[G_ELI_AUTHKEYLEN]; 180220922Spjd u_int sc_aalgo; 181220922Spjd u_int sc_akeylen; 182220922Spjd u_int sc_alen; 183220922Spjd SHA256_CTX sc_akeyctx; 184220922Spjd uint8_t sc_ivkey[G_ELI_IVKEYLEN]; 185220922Spjd SHA256_CTX sc_ivctx; 186220922Spjd int sc_nkey; 187220922Spjd uint32_t sc_flags; 188220922Spjd int sc_inflight; 189220922Spjd off_t sc_mediasize; 190220922Spjd size_t sc_sectorsize; 191220922Spjd u_int sc_bytes_per_sector; 192220922Spjd u_int sc_data_per_sector; 193148456Spjd 194148456Spjd /* Only for software cryptography. */ 195148456Spjd struct bio_queue_head sc_queue; 196220922Spjd struct mtx sc_queue_mtx; 197148456Spjd LIST_HEAD(, g_eli_worker) sc_workers; 198148456Spjd}; 199148456Spjd#define sc_name sc_geom->name 200148456Spjd#endif /* _KERNEL */ 201148456Spjd 202148456Spjdstruct g_eli_metadata { 203148456Spjd char md_magic[16]; /* Magic value. */ 204148456Spjd uint32_t md_version; /* Version number. */ 205148456Spjd uint32_t md_flags; /* Additional flags. */ 206159307Spjd uint16_t md_ealgo; /* Encryption algorithm. */ 207148456Spjd uint16_t md_keylen; /* Key length. */ 208159307Spjd uint16_t md_aalgo; /* Authentication algorithm. */ 209148456Spjd uint64_t md_provsize; /* Provider's size. */ 210148456Spjd uint32_t md_sectorsize; /* Sector size. */ 211148456Spjd uint8_t md_keys; /* Available keys. */ 212149303Spjd int32_t md_iterations; /* Number of iterations for PKCS#5v2. */ 213148456Spjd uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */ 214148456Spjd /* Encrypted master key (IV-key, Data-key, HMAC). */ 215148456Spjd uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN]; 216148456Spjd u_char md_hash[16]; /* MD5 hash. */ 217149323Spjd} __packed; 218148456Spjd#ifndef _OpenSSL_ 219148456Spjdstatic __inline void 220148456Spjdeli_metadata_encode(struct g_eli_metadata *md, u_char *data) 221148456Spjd{ 222148456Spjd MD5_CTX ctx; 223148456Spjd u_char *p; 224148456Spjd 225148456Spjd p = data; 226148456Spjd bcopy(md->md_magic, p, sizeof(md->md_magic)); p += sizeof(md->md_magic); 227148456Spjd le32enc(p, md->md_version); p += sizeof(md->md_version); 228148456Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 229159307Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 230148456Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 231159307Spjd le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo); 232148456Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 233148456Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 234148456Spjd *p = md->md_keys; p += sizeof(md->md_keys); 235148456Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 236148456Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 237148456Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 238148456Spjd MD5Init(&ctx); 239148456Spjd MD5Update(&ctx, data, p - data); 240157305Spjd MD5Final(md->md_hash, &ctx); 241148456Spjd bcopy(md->md_hash, p, sizeof(md->md_hash)); 242148456Spjd} 243148456Spjdstatic __inline int 244148456Spjdeli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md) 245148456Spjd{ 246148456Spjd MD5_CTX ctx; 247148456Spjd const u_char *p; 248148456Spjd 249148456Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 250148456Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 251159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 252148456Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 253148456Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 254148456Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 255148456Spjd md->md_keys = *p; p += sizeof(md->md_keys); 256148456Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 257148456Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 258148456Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 259148456Spjd MD5Init(&ctx); 260148456Spjd MD5Update(&ctx, data, p - data); 261157305Spjd MD5Final(md->md_hash, &ctx); 262148456Spjd if (bcmp(md->md_hash, p, 16) != 0) 263148456Spjd return (EINVAL); 264148456Spjd return (0); 265148456Spjd} 266212845Sbrian 267148456Spjdstatic __inline int 268221629Spjdeli_metadata_decode_v1v2v3v4v5v6(const u_char *data, struct g_eli_metadata *md) 269159307Spjd{ 270159307Spjd MD5_CTX ctx; 271159307Spjd const u_char *p; 272159307Spjd 273159307Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 274159307Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 275159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 276159307Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 277159307Spjd md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo); 278159307Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 279159307Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 280159307Spjd md->md_keys = *p; p += sizeof(md->md_keys); 281159307Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 282159307Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 283159307Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 284159307Spjd MD5Init(&ctx); 285159307Spjd MD5Update(&ctx, data, p - data); 286159307Spjd MD5Final(md->md_hash, &ctx); 287159307Spjd if (bcmp(md->md_hash, p, 16) != 0) 288159307Spjd return (EINVAL); 289159307Spjd return (0); 290159307Spjd} 291159307Spjdstatic __inline int 292148456Spjdeli_metadata_decode(const u_char *data, struct g_eli_metadata *md) 293148456Spjd{ 294148456Spjd int error; 295148456Spjd 296148456Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 297148456Spjd md->md_version = le32dec(data + sizeof(md->md_magic)); 298148456Spjd switch (md->md_version) { 299221629Spjd case G_ELI_VERSION_00: 300148456Spjd error = eli_metadata_decode_v0(data, md); 301148456Spjd break; 302221629Spjd case G_ELI_VERSION_01: 303221629Spjd case G_ELI_VERSION_02: 304221629Spjd case G_ELI_VERSION_03: 305221629Spjd case G_ELI_VERSION_04: 306221629Spjd case G_ELI_VERSION_05: 307221629Spjd case G_ELI_VERSION_06: 308221629Spjd error = eli_metadata_decode_v1v2v3v4v5v6(data, md); 309159307Spjd break; 310148456Spjd default: 311226721Spjd error = EOPNOTSUPP; 312148456Spjd break; 313148456Spjd } 314148456Spjd return (error); 315148456Spjd} 316148456Spjd#endif /* !_OpenSSL */ 317148456Spjd 318148456Spjdstatic __inline u_int 319159307Spjdg_eli_str2ealgo(const char *name) 320148456Spjd{ 321148456Spjd 322148867Spjd if (strcasecmp("null", name) == 0) 323148456Spjd return (CRYPTO_NULL_CBC); 324213070Spjd else if (strcasecmp("null-cbc", name) == 0) 325213070Spjd return (CRYPTO_NULL_CBC); 326148867Spjd else if (strcasecmp("aes", name) == 0) 327213070Spjd return (CRYPTO_AES_XTS); 328213070Spjd else if (strcasecmp("aes-cbc", name) == 0) 329148456Spjd return (CRYPTO_AES_CBC); 330213070Spjd else if (strcasecmp("aes-xts", name) == 0) 331213070Spjd return (CRYPTO_AES_XTS); 332148867Spjd else if (strcasecmp("blowfish", name) == 0) 333148456Spjd return (CRYPTO_BLF_CBC); 334213070Spjd else if (strcasecmp("blowfish-cbc", name) == 0) 335213070Spjd return (CRYPTO_BLF_CBC); 336172031Spjd else if (strcasecmp("camellia", name) == 0) 337172031Spjd return (CRYPTO_CAMELLIA_CBC); 338213070Spjd else if (strcasecmp("camellia-cbc", name) == 0) 339213070Spjd return (CRYPTO_CAMELLIA_CBC); 340148867Spjd else if (strcasecmp("3des", name) == 0) 341148456Spjd return (CRYPTO_3DES_CBC); 342213070Spjd else if (strcasecmp("3des-cbc", name) == 0) 343213070Spjd return (CRYPTO_3DES_CBC); 344148456Spjd return (CRYPTO_ALGORITHM_MIN - 1); 345148456Spjd} 346148456Spjd 347159307Spjdstatic __inline u_int 348159307Spjdg_eli_str2aalgo(const char *name) 349159307Spjd{ 350159307Spjd 351159307Spjd if (strcasecmp("hmac/md5", name) == 0) 352159307Spjd return (CRYPTO_MD5_HMAC); 353159307Spjd else if (strcasecmp("hmac/sha1", name) == 0) 354159307Spjd return (CRYPTO_SHA1_HMAC); 355159307Spjd else if (strcasecmp("hmac/ripemd160", name) == 0) 356159307Spjd return (CRYPTO_RIPEMD160_HMAC); 357159307Spjd else if (strcasecmp("hmac/sha256", name) == 0) 358159307Spjd return (CRYPTO_SHA2_256_HMAC); 359159307Spjd else if (strcasecmp("hmac/sha384", name) == 0) 360159307Spjd return (CRYPTO_SHA2_384_HMAC); 361159307Spjd else if (strcasecmp("hmac/sha512", name) == 0) 362159307Spjd return (CRYPTO_SHA2_512_HMAC); 363159307Spjd return (CRYPTO_ALGORITHM_MIN - 1); 364159307Spjd} 365159307Spjd 366148456Spjdstatic __inline const char * 367148456Spjdg_eli_algo2str(u_int algo) 368148456Spjd{ 369148456Spjd 370148456Spjd switch (algo) { 371148456Spjd case CRYPTO_NULL_CBC: 372148456Spjd return ("NULL"); 373148456Spjd case CRYPTO_AES_CBC: 374159307Spjd return ("AES-CBC"); 375213070Spjd case CRYPTO_AES_XTS: 376213070Spjd return ("AES-XTS"); 377148456Spjd case CRYPTO_BLF_CBC: 378159307Spjd return ("Blowfish-CBC"); 379172031Spjd case CRYPTO_CAMELLIA_CBC: 380172031Spjd return ("CAMELLIA-CBC"); 381148456Spjd case CRYPTO_3DES_CBC: 382159307Spjd return ("3DES-CBC"); 383159307Spjd case CRYPTO_MD5_HMAC: 384159307Spjd return ("HMAC/MD5"); 385159307Spjd case CRYPTO_SHA1_HMAC: 386159307Spjd return ("HMAC/SHA1"); 387159307Spjd case CRYPTO_RIPEMD160_HMAC: 388159307Spjd return ("HMAC/RIPEMD160"); 389159307Spjd case CRYPTO_SHA2_256_HMAC: 390159307Spjd return ("HMAC/SHA256"); 391159307Spjd case CRYPTO_SHA2_384_HMAC: 392159307Spjd return ("HMAC/SHA384"); 393159307Spjd case CRYPTO_SHA2_512_HMAC: 394159307Spjd return ("HMAC/SHA512"); 395148456Spjd } 396148456Spjd return ("unknown"); 397148456Spjd} 398148456Spjd 399148456Spjdstatic __inline void 400148456Spjdeli_metadata_dump(const struct g_eli_metadata *md) 401148456Spjd{ 402148456Spjd static const char hex[] = "0123456789abcdef"; 403148456Spjd char str[sizeof(md->md_mkeys) * 2 + 1]; 404148456Spjd u_int i; 405148456Spjd 406148456Spjd printf(" magic: %s\n", md->md_magic); 407148456Spjd printf(" version: %u\n", (u_int)md->md_version); 408148456Spjd printf(" flags: 0x%x\n", (u_int)md->md_flags); 409159307Spjd printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo)); 410148456Spjd printf(" keylen: %u\n", (u_int)md->md_keylen); 411159307Spjd if (md->md_flags & G_ELI_FLAG_AUTH) 412159307Spjd printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo)); 413148456Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 414148456Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 415148456Spjd printf(" keys: 0x%02x\n", (u_int)md->md_keys); 416148456Spjd printf("iterations: %u\n", (u_int)md->md_iterations); 417148456Spjd bzero(str, sizeof(str)); 418148456Spjd for (i = 0; i < sizeof(md->md_salt); i++) { 419148456Spjd str[i * 2] = hex[md->md_salt[i] >> 4]; 420148456Spjd str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f]; 421148456Spjd } 422149303Spjd printf(" Salt: %s\n", str); 423148456Spjd bzero(str, sizeof(str)); 424148456Spjd for (i = 0; i < sizeof(md->md_mkeys); i++) { 425148456Spjd str[i * 2] = hex[md->md_mkeys[i] >> 4]; 426148456Spjd str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f]; 427148456Spjd } 428148456Spjd printf("Master Key: %s\n", str); 429148456Spjd bzero(str, sizeof(str)); 430148456Spjd for (i = 0; i < 16; i++) { 431148456Spjd str[i * 2] = hex[md->md_hash[i] >> 4]; 432148456Spjd str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 433148456Spjd } 434149303Spjd printf(" MD5 hash: %s\n", str); 435148456Spjd} 436148456Spjd 437148456Spjdstatic __inline u_int 438148456Spjdg_eli_keylen(u_int algo, u_int keylen) 439148456Spjd{ 440148456Spjd 441148456Spjd switch (algo) { 442148456Spjd case CRYPTO_NULL_CBC: 443148456Spjd if (keylen == 0) 444148456Spjd keylen = 64 * 8; 445148456Spjd else { 446148456Spjd if (keylen > 64 * 8) 447148456Spjd keylen = 0; 448148456Spjd } 449148456Spjd return (keylen); 450211927Spjd case CRYPTO_AES_CBC: 451172031Spjd case CRYPTO_CAMELLIA_CBC: 452148456Spjd switch (keylen) { 453148456Spjd case 0: 454148456Spjd return (128); 455148456Spjd case 128: 456148456Spjd case 192: 457148456Spjd case 256: 458148456Spjd return (keylen); 459148456Spjd default: 460148456Spjd return (0); 461148456Spjd } 462213070Spjd case CRYPTO_AES_XTS: 463213070Spjd switch (keylen) { 464213070Spjd case 0: 465213070Spjd return (128); 466213070Spjd case 128: 467213070Spjd case 256: 468213070Spjd return (keylen); 469213070Spjd default: 470213070Spjd return (0); 471213070Spjd } 472148456Spjd case CRYPTO_BLF_CBC: 473148456Spjd if (keylen == 0) 474148456Spjd return (128); 475148456Spjd if (keylen < 128 || keylen > 448) 476148456Spjd return (0); 477148456Spjd if ((keylen % 32) != 0) 478148456Spjd return (0); 479148456Spjd return (keylen); 480148456Spjd case CRYPTO_3DES_CBC: 481148456Spjd if (keylen == 0 || keylen == 192) 482148456Spjd return (192); 483148456Spjd return (0); 484148456Spjd default: 485148456Spjd return (0); 486148456Spjd } 487148456Spjd} 488148456Spjd 489159307Spjdstatic __inline u_int 490159307Spjdg_eli_hashlen(u_int algo) 491159307Spjd{ 492159307Spjd 493159307Spjd switch (algo) { 494159307Spjd case CRYPTO_MD5_HMAC: 495159307Spjd return (16); 496159307Spjd case CRYPTO_SHA1_HMAC: 497159307Spjd return (20); 498159307Spjd case CRYPTO_RIPEMD160_HMAC: 499159307Spjd return (20); 500159307Spjd case CRYPTO_SHA2_256_HMAC: 501159307Spjd return (32); 502159307Spjd case CRYPTO_SHA2_384_HMAC: 503159307Spjd return (48); 504159307Spjd case CRYPTO_SHA2_512_HMAC: 505159307Spjd return (64); 506159307Spjd } 507159307Spjd return (0); 508159307Spjd} 509159307Spjd 510148456Spjd#ifdef _KERNEL 511148456Spjdint g_eli_read_metadata(struct g_class *mp, struct g_provider *pp, 512148456Spjd struct g_eli_metadata *md); 513148456Spjdstruct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp, 514148456Spjd struct g_provider *bpp, const struct g_eli_metadata *md, 515148456Spjd const u_char *mkey, int nkey); 516148456Spjdint g_eli_destroy(struct g_eli_softc *sc, boolean_t force); 517148456Spjd 518148456Spjdint g_eli_access(struct g_provider *pp, int dr, int dw, int de); 519148456Spjdvoid g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb); 520159307Spjd 521159307Spjdvoid g_eli_read_done(struct bio *bp); 522159307Spjdvoid g_eli_write_done(struct bio *bp); 523159307Spjdint g_eli_crypto_rerun(struct cryptop *crp); 524159307Spjdvoid g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv, 525159307Spjd size_t size); 526159307Spjd 527214118Spjdvoid g_eli_crypto_read(struct g_eli_softc *sc, struct bio *bp, boolean_t fromworker); 528159307Spjdvoid g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp); 529159307Spjd 530159307Spjdvoid g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp); 531159307Spjdvoid g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp); 532148456Spjd#endif 533148456Spjd 534148456Spjdvoid g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key); 535148456Spjdint g_eli_mkey_decrypt(const struct g_eli_metadata *md, 536148456Spjd const unsigned char *key, unsigned char *mkey, unsigned *nkeyp); 537148456Spjdint g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen, 538148456Spjd unsigned char *mkey); 539159307Spjd#ifdef _KERNEL 540159307Spjdvoid g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey); 541159307Spjd#endif 542148456Spjd 543148456Spjdint g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize, 544148456Spjd const u_char *key, size_t keysize); 545148456Spjdint g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize, 546148456Spjd const u_char *key, size_t keysize); 547148456Spjd 548148456Spjdstruct hmac_ctx { 549148456Spjd SHA512_CTX shactx; 550148456Spjd u_char k_opad[128]; 551148456Spjd}; 552148456Spjd 553148456Spjdvoid g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey, 554148456Spjd size_t hkeylen); 555148456Spjdvoid g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data, 556148456Spjd size_t datasize); 557148456Spjdvoid g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize); 558148456Spjdvoid g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize, 559148456Spjd const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize); 560220922Spjd 561220922Spjd#ifdef _KERNEL 562220922Spjdvoid g_eli_key_init(struct g_eli_softc *sc); 563220922Spjdvoid g_eli_key_destroy(struct g_eli_softc *sc); 564220922Spjduint8_t *g_eli_key_hold(struct g_eli_softc *sc, off_t offset, size_t blocksize); 565220922Spjdvoid g_eli_key_drop(struct g_eli_softc *sc, uint8_t *rawkey); 566220922Spjd#endif 567148456Spjd#endif /* !_G_ELI_H_ */ 568