g_eli.h revision 226733
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 226733 2011-10-25 13:57:50Z 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 46226733Spjd#include <assert.h> 47148456Spjd#include <stdio.h> 48148456Spjd#include <string.h> 49148867Spjd#include <strings.h> 50148456Spjd#endif 51148456Spjd#ifndef _OpenSSL_ 52148456Spjd#include <sys/md5.h> 53148456Spjd#endif 54148456Spjd 55148456Spjd#define G_ELI_CLASS_NAME "ELI" 56148456Spjd#define G_ELI_MAGIC "GEOM::ELI" 57148456Spjd#define G_ELI_SUFFIX ".eli" 58148456Spjd 59148456Spjd/* 60148456Spjd * Version history: 61148456Spjd * 0 - Initial version number. 62159307Spjd * 1 - Added data authentication support (md_aalgo field and 63159307Spjd * G_ELI_FLAG_AUTH flag). 64161217Spjd * 2 - Added G_ELI_FLAG_READONLY. 65211927Spjd * 3 - Added 'configure' subcommand. 66211927Spjd * 4 - IV is generated from offset converted to little-endian 67221628Spjd * (the G_ELI_FLAG_NATIVE_BYTE_ORDER flag will be set for older versions). 68213070Spjd * 5 - Added multiple encrypton keys and AES-XTS support. 69221628Spjd * 6 - Fixed usage of multiple keys for authenticated providers (the 70221628Spjd * G_ELI_FLAG_FIRST_KEY flag will be set for older versions). 71148456Spjd */ 72221628Spjd#define G_ELI_VERSION_00 0 73221628Spjd#define G_ELI_VERSION_01 1 74221628Spjd#define G_ELI_VERSION_02 2 75221628Spjd#define G_ELI_VERSION_03 3 76221628Spjd#define G_ELI_VERSION_04 4 77221628Spjd#define G_ELI_VERSION_05 5 78221628Spjd#define G_ELI_VERSION_06 6 79221628Spjd#define G_ELI_VERSION G_ELI_VERSION_06 80148456Spjd 81161127Spjd/* ON DISK FLAGS. */ 82148456Spjd/* Use random, onetime keys. */ 83161220Spjd#define G_ELI_FLAG_ONETIME 0x00000001 84148456Spjd/* Ask for the passphrase from the kernel, before mounting root. */ 85161220Spjd#define G_ELI_FLAG_BOOT 0x00000002 86148456Spjd/* Detach on last close, if we were open for writing. */ 87161220Spjd#define G_ELI_FLAG_WO_DETACH 0x00000004 88148456Spjd/* Detach on last close. */ 89161220Spjd#define G_ELI_FLAG_RW_DETACH 0x00000008 90159307Spjd/* Provide data authentication. */ 91161220Spjd#define G_ELI_FLAG_AUTH 0x00000010 92161127Spjd/* Provider is read-only, we should deny all write attempts. */ 93161220Spjd#define G_ELI_FLAG_RO 0x00000020 94161127Spjd/* RUNTIME FLAGS. */ 95148456Spjd/* Provider was open for writing. */ 96161220Spjd#define G_ELI_FLAG_WOPEN 0x00010000 97148456Spjd/* Destroy device. */ 98161220Spjd#define G_ELI_FLAG_DESTROY 0x00020000 99161220Spjd/* Provider uses native byte-order for IV generation. */ 100161220Spjd#define G_ELI_FLAG_NATIVE_BYTE_ORDER 0x00040000 101213067Spjd/* Provider uses single encryption key. */ 102213067Spjd#define G_ELI_FLAG_SINGLE_KEY 0x00080000 103214118Spjd/* Device suspended. */ 104214118Spjd#define G_ELI_FLAG_SUSPEND 0x00100000 105221628Spjd/* Provider uses first encryption key. */ 106221628Spjd#define G_ELI_FLAG_FIRST_KEY 0x00200000 107148456Spjd 108214118Spjd#define G_ELI_NEW_BIO 255 109214118Spjd 110148456Spjd#define SHA512_MDLEN 64 111159307Spjd#define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH 112148456Spjd 113148456Spjd#define G_ELI_MAXMKEYS 2 114148456Spjd#define G_ELI_MAXKEYLEN 64 115148456Spjd#define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN 116148456Spjd#define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN 117159307Spjd#define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN 118148456Spjd#define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN 119148456Spjd#define G_ELI_SALTLEN 64 120148456Spjd#define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN) 121148456Spjd/* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */ 122148456Spjd#define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN) 123213062Spjd#define G_ELI_OVERWRITES 5 124213067Spjd/* Switch data encryption key every 2^20 blocks. */ 125213067Spjd#define G_ELI_KEY_SHIFT 20 126148456Spjd 127148456Spjd#ifdef _KERNEL 128213165Spjdextern int g_eli_debug; 129148456Spjdextern u_int g_eli_overwrites; 130159307Spjdextern u_int g_eli_batch; 131148456Spjd 132214163Spjd#define G_ELI_CRYPTO_UNKNOWN 0 133148456Spjd#define G_ELI_CRYPTO_HW 1 134148456Spjd#define G_ELI_CRYPTO_SW 2 135148456Spjd 136148456Spjd#define G_ELI_DEBUG(lvl, ...) do { \ 137148456Spjd if (g_eli_debug >= (lvl)) { \ 138148456Spjd printf("GEOM_ELI"); \ 139148456Spjd if (g_eli_debug > 0) \ 140148456Spjd printf("[%u]", lvl); \ 141148456Spjd printf(": "); \ 142148456Spjd printf(__VA_ARGS__); \ 143148456Spjd printf("\n"); \ 144148456Spjd } \ 145148456Spjd} while (0) 146148456Spjd#define G_ELI_LOGREQ(lvl, bp, ...) do { \ 147148456Spjd if (g_eli_debug >= (lvl)) { \ 148148456Spjd printf("GEOM_ELI"); \ 149148456Spjd if (g_eli_debug > 0) \ 150148456Spjd printf("[%u]", lvl); \ 151148456Spjd printf(": "); \ 152148456Spjd printf(__VA_ARGS__); \ 153148456Spjd printf(" "); \ 154148456Spjd g_print_bio(bp); \ 155148456Spjd printf("\n"); \ 156148456Spjd } \ 157148456Spjd} while (0) 158148456Spjd 159148456Spjdstruct g_eli_worker { 160148456Spjd struct g_eli_softc *w_softc; 161148456Spjd struct proc *w_proc; 162148456Spjd u_int w_number; 163148456Spjd uint64_t w_sid; 164214118Spjd boolean_t w_active; 165148456Spjd LIST_ENTRY(g_eli_worker) w_next; 166148456Spjd}; 167148456Spjd 168148456Spjdstruct g_eli_softc { 169220922Spjd struct g_geom *sc_geom; 170226733Spjd u_int sc_version; 171220922Spjd u_int sc_crypto; 172220922Spjd uint8_t sc_mkey[G_ELI_DATAIVKEYLEN]; 173220922Spjd uint8_t sc_ekey[G_ELI_DATAKEYLEN]; 174220922Spjd TAILQ_HEAD(, g_eli_key) sc_ekeys_queue; 175220922Spjd RB_HEAD(g_eli_key_tree, g_eli_key) sc_ekeys_tree; 176220922Spjd struct mtx sc_ekeys_lock; 177220922Spjd uint64_t sc_ekeys_total; 178220922Spjd uint64_t sc_ekeys_allocated; 179220922Spjd u_int sc_ealgo; 180220922Spjd u_int sc_ekeylen; 181220922Spjd uint8_t sc_akey[G_ELI_AUTHKEYLEN]; 182220922Spjd u_int sc_aalgo; 183220922Spjd u_int sc_akeylen; 184220922Spjd u_int sc_alen; 185220922Spjd SHA256_CTX sc_akeyctx; 186220922Spjd uint8_t sc_ivkey[G_ELI_IVKEYLEN]; 187220922Spjd SHA256_CTX sc_ivctx; 188220922Spjd int sc_nkey; 189220922Spjd uint32_t sc_flags; 190220922Spjd int sc_inflight; 191220922Spjd off_t sc_mediasize; 192220922Spjd size_t sc_sectorsize; 193220922Spjd u_int sc_bytes_per_sector; 194220922Spjd u_int sc_data_per_sector; 195148456Spjd 196148456Spjd /* Only for software cryptography. */ 197148456Spjd struct bio_queue_head sc_queue; 198220922Spjd struct mtx sc_queue_mtx; 199148456Spjd LIST_HEAD(, g_eli_worker) sc_workers; 200148456Spjd}; 201148456Spjd#define sc_name sc_geom->name 202148456Spjd#endif /* _KERNEL */ 203148456Spjd 204148456Spjdstruct g_eli_metadata { 205148456Spjd char md_magic[16]; /* Magic value. */ 206148456Spjd uint32_t md_version; /* Version number. */ 207148456Spjd uint32_t md_flags; /* Additional flags. */ 208159307Spjd uint16_t md_ealgo; /* Encryption algorithm. */ 209148456Spjd uint16_t md_keylen; /* Key length. */ 210159307Spjd uint16_t md_aalgo; /* Authentication algorithm. */ 211148456Spjd uint64_t md_provsize; /* Provider's size. */ 212148456Spjd uint32_t md_sectorsize; /* Sector size. */ 213148456Spjd uint8_t md_keys; /* Available keys. */ 214149303Spjd int32_t md_iterations; /* Number of iterations for PKCS#5v2. */ 215148456Spjd uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */ 216148456Spjd /* Encrypted master key (IV-key, Data-key, HMAC). */ 217148456Spjd uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN]; 218148456Spjd u_char md_hash[16]; /* MD5 hash. */ 219149323Spjd} __packed; 220148456Spjd#ifndef _OpenSSL_ 221148456Spjdstatic __inline void 222226733Spjdeli_metadata_encode_v0(struct g_eli_metadata *md, u_char **datap) 223148456Spjd{ 224148456Spjd u_char *p; 225148456Spjd 226226733Spjd p = *datap; 227148456Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 228159307Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 229148456Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 230226733Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 231226733Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 232226733Spjd *p = md->md_keys; p += sizeof(md->md_keys); 233226733Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 234226733Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 235226733Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 236226733Spjd *datap = p; 237226733Spjd} 238226733Spjdstatic __inline void 239226733Spjdeli_metadata_encode_v1v2v3v4v5v6(struct g_eli_metadata *md, u_char **datap) 240226733Spjd{ 241226733Spjd u_char *p; 242226733Spjd 243226733Spjd p = *datap; 244226733Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 245226733Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 246226733Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 247159307Spjd le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo); 248148456Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 249148456Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 250148456Spjd *p = md->md_keys; p += sizeof(md->md_keys); 251148456Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 252148456Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 253148456Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 254226733Spjd *datap = p; 255226733Spjd} 256226733Spjdstatic __inline void 257226733Spjdeli_metadata_encode(struct g_eli_metadata *md, u_char *data) 258226733Spjd{ 259226733Spjd MD5_CTX ctx; 260226733Spjd u_char *p; 261226733Spjd 262226733Spjd p = data; 263226733Spjd bcopy(md->md_magic, p, sizeof(md->md_magic)); 264226733Spjd p += sizeof(md->md_magic); 265226733Spjd le32enc(p, md->md_version); 266226733Spjd p += sizeof(md->md_version); 267226733Spjd switch (md->md_version) { 268226733Spjd case G_ELI_VERSION_00: 269226733Spjd eli_metadata_encode_v0(md, &p); 270226733Spjd break; 271226733Spjd case G_ELI_VERSION_01: 272226733Spjd case G_ELI_VERSION_02: 273226733Spjd case G_ELI_VERSION_03: 274226733Spjd case G_ELI_VERSION_04: 275226733Spjd case G_ELI_VERSION_05: 276226733Spjd case G_ELI_VERSION_06: 277226733Spjd eli_metadata_encode_v1v2v3v4v5v6(md, &p); 278226733Spjd break; 279226733Spjd default: 280226733Spjd#ifdef _KERNEL 281226733Spjd panic("%s: Unsupported version %u.", __func__, 282226733Spjd (u_int)md->md_version); 283226733Spjd#else 284226733Spjd assert(!"Unsupported metadata version."); 285226733Spjd#endif 286226733Spjd } 287148456Spjd MD5Init(&ctx); 288148456Spjd MD5Update(&ctx, data, p - data); 289157305Spjd MD5Final(md->md_hash, &ctx); 290148456Spjd bcopy(md->md_hash, p, sizeof(md->md_hash)); 291148456Spjd} 292148456Spjdstatic __inline int 293148456Spjdeli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md) 294148456Spjd{ 295148456Spjd MD5_CTX ctx; 296148456Spjd const u_char *p; 297148456Spjd 298148456Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 299148456Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 300159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 301148456Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 302148456Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 303148456Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 304148456Spjd md->md_keys = *p; p += sizeof(md->md_keys); 305148456Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 306148456Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 307148456Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 308148456Spjd MD5Init(&ctx); 309148456Spjd MD5Update(&ctx, data, p - data); 310157305Spjd MD5Final(md->md_hash, &ctx); 311148456Spjd if (bcmp(md->md_hash, p, 16) != 0) 312148456Spjd return (EINVAL); 313148456Spjd return (0); 314148456Spjd} 315212845Sbrian 316148456Spjdstatic __inline int 317221629Spjdeli_metadata_decode_v1v2v3v4v5v6(const u_char *data, struct g_eli_metadata *md) 318159307Spjd{ 319159307Spjd MD5_CTX ctx; 320159307Spjd const u_char *p; 321159307Spjd 322159307Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 323159307Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 324159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 325159307Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 326159307Spjd md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo); 327159307Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 328159307Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 329159307Spjd md->md_keys = *p; p += sizeof(md->md_keys); 330159307Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 331159307Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 332159307Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 333159307Spjd MD5Init(&ctx); 334159307Spjd MD5Update(&ctx, data, p - data); 335159307Spjd MD5Final(md->md_hash, &ctx); 336159307Spjd if (bcmp(md->md_hash, p, 16) != 0) 337159307Spjd return (EINVAL); 338159307Spjd return (0); 339159307Spjd} 340159307Spjdstatic __inline int 341148456Spjdeli_metadata_decode(const u_char *data, struct g_eli_metadata *md) 342148456Spjd{ 343148456Spjd int error; 344148456Spjd 345148456Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 346226730Spjd if (strcmp(md->md_magic, G_ELI_MAGIC) != 0) 347226730Spjd return (EINVAL); 348148456Spjd md->md_version = le32dec(data + sizeof(md->md_magic)); 349148456Spjd switch (md->md_version) { 350221629Spjd case G_ELI_VERSION_00: 351148456Spjd error = eli_metadata_decode_v0(data, md); 352148456Spjd break; 353221629Spjd case G_ELI_VERSION_01: 354221629Spjd case G_ELI_VERSION_02: 355221629Spjd case G_ELI_VERSION_03: 356221629Spjd case G_ELI_VERSION_04: 357221629Spjd case G_ELI_VERSION_05: 358221629Spjd case G_ELI_VERSION_06: 359221629Spjd error = eli_metadata_decode_v1v2v3v4v5v6(data, md); 360159307Spjd break; 361148456Spjd default: 362226721Spjd error = EOPNOTSUPP; 363148456Spjd break; 364148456Spjd } 365148456Spjd return (error); 366148456Spjd} 367148456Spjd#endif /* !_OpenSSL */ 368148456Spjd 369148456Spjdstatic __inline u_int 370159307Spjdg_eli_str2ealgo(const char *name) 371148456Spjd{ 372148456Spjd 373148867Spjd if (strcasecmp("null", name) == 0) 374148456Spjd return (CRYPTO_NULL_CBC); 375213070Spjd else if (strcasecmp("null-cbc", name) == 0) 376213070Spjd return (CRYPTO_NULL_CBC); 377148867Spjd else if (strcasecmp("aes", name) == 0) 378213070Spjd return (CRYPTO_AES_XTS); 379213070Spjd else if (strcasecmp("aes-cbc", name) == 0) 380148456Spjd return (CRYPTO_AES_CBC); 381213070Spjd else if (strcasecmp("aes-xts", name) == 0) 382213070Spjd return (CRYPTO_AES_XTS); 383148867Spjd else if (strcasecmp("blowfish", name) == 0) 384148456Spjd return (CRYPTO_BLF_CBC); 385213070Spjd else if (strcasecmp("blowfish-cbc", name) == 0) 386213070Spjd return (CRYPTO_BLF_CBC); 387172031Spjd else if (strcasecmp("camellia", name) == 0) 388172031Spjd return (CRYPTO_CAMELLIA_CBC); 389213070Spjd else if (strcasecmp("camellia-cbc", name) == 0) 390213070Spjd return (CRYPTO_CAMELLIA_CBC); 391148867Spjd else if (strcasecmp("3des", name) == 0) 392148456Spjd return (CRYPTO_3DES_CBC); 393213070Spjd else if (strcasecmp("3des-cbc", name) == 0) 394213070Spjd return (CRYPTO_3DES_CBC); 395148456Spjd return (CRYPTO_ALGORITHM_MIN - 1); 396148456Spjd} 397148456Spjd 398159307Spjdstatic __inline u_int 399159307Spjdg_eli_str2aalgo(const char *name) 400159307Spjd{ 401159307Spjd 402159307Spjd if (strcasecmp("hmac/md5", name) == 0) 403159307Spjd return (CRYPTO_MD5_HMAC); 404159307Spjd else if (strcasecmp("hmac/sha1", name) == 0) 405159307Spjd return (CRYPTO_SHA1_HMAC); 406159307Spjd else if (strcasecmp("hmac/ripemd160", name) == 0) 407159307Spjd return (CRYPTO_RIPEMD160_HMAC); 408159307Spjd else if (strcasecmp("hmac/sha256", name) == 0) 409159307Spjd return (CRYPTO_SHA2_256_HMAC); 410159307Spjd else if (strcasecmp("hmac/sha384", name) == 0) 411159307Spjd return (CRYPTO_SHA2_384_HMAC); 412159307Spjd else if (strcasecmp("hmac/sha512", name) == 0) 413159307Spjd return (CRYPTO_SHA2_512_HMAC); 414159307Spjd return (CRYPTO_ALGORITHM_MIN - 1); 415159307Spjd} 416159307Spjd 417148456Spjdstatic __inline const char * 418148456Spjdg_eli_algo2str(u_int algo) 419148456Spjd{ 420148456Spjd 421148456Spjd switch (algo) { 422148456Spjd case CRYPTO_NULL_CBC: 423148456Spjd return ("NULL"); 424148456Spjd case CRYPTO_AES_CBC: 425159307Spjd return ("AES-CBC"); 426213070Spjd case CRYPTO_AES_XTS: 427213070Spjd return ("AES-XTS"); 428148456Spjd case CRYPTO_BLF_CBC: 429159307Spjd return ("Blowfish-CBC"); 430172031Spjd case CRYPTO_CAMELLIA_CBC: 431172031Spjd return ("CAMELLIA-CBC"); 432148456Spjd case CRYPTO_3DES_CBC: 433159307Spjd return ("3DES-CBC"); 434159307Spjd case CRYPTO_MD5_HMAC: 435159307Spjd return ("HMAC/MD5"); 436159307Spjd case CRYPTO_SHA1_HMAC: 437159307Spjd return ("HMAC/SHA1"); 438159307Spjd case CRYPTO_RIPEMD160_HMAC: 439159307Spjd return ("HMAC/RIPEMD160"); 440159307Spjd case CRYPTO_SHA2_256_HMAC: 441159307Spjd return ("HMAC/SHA256"); 442159307Spjd case CRYPTO_SHA2_384_HMAC: 443159307Spjd return ("HMAC/SHA384"); 444159307Spjd case CRYPTO_SHA2_512_HMAC: 445159307Spjd return ("HMAC/SHA512"); 446148456Spjd } 447148456Spjd return ("unknown"); 448148456Spjd} 449148456Spjd 450148456Spjdstatic __inline void 451148456Spjdeli_metadata_dump(const struct g_eli_metadata *md) 452148456Spjd{ 453148456Spjd static const char hex[] = "0123456789abcdef"; 454148456Spjd char str[sizeof(md->md_mkeys) * 2 + 1]; 455148456Spjd u_int i; 456148456Spjd 457148456Spjd printf(" magic: %s\n", md->md_magic); 458148456Spjd printf(" version: %u\n", (u_int)md->md_version); 459148456Spjd printf(" flags: 0x%x\n", (u_int)md->md_flags); 460159307Spjd printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo)); 461148456Spjd printf(" keylen: %u\n", (u_int)md->md_keylen); 462159307Spjd if (md->md_flags & G_ELI_FLAG_AUTH) 463159307Spjd printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo)); 464148456Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 465148456Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 466148456Spjd printf(" keys: 0x%02x\n", (u_int)md->md_keys); 467148456Spjd printf("iterations: %u\n", (u_int)md->md_iterations); 468148456Spjd bzero(str, sizeof(str)); 469148456Spjd for (i = 0; i < sizeof(md->md_salt); i++) { 470148456Spjd str[i * 2] = hex[md->md_salt[i] >> 4]; 471148456Spjd str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f]; 472148456Spjd } 473149303Spjd printf(" Salt: %s\n", str); 474148456Spjd bzero(str, sizeof(str)); 475148456Spjd for (i = 0; i < sizeof(md->md_mkeys); i++) { 476148456Spjd str[i * 2] = hex[md->md_mkeys[i] >> 4]; 477148456Spjd str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f]; 478148456Spjd } 479148456Spjd printf("Master Key: %s\n", str); 480148456Spjd bzero(str, sizeof(str)); 481148456Spjd for (i = 0; i < 16; i++) { 482148456Spjd str[i * 2] = hex[md->md_hash[i] >> 4]; 483148456Spjd str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 484148456Spjd } 485149303Spjd printf(" MD5 hash: %s\n", str); 486148456Spjd} 487148456Spjd 488148456Spjdstatic __inline u_int 489148456Spjdg_eli_keylen(u_int algo, u_int keylen) 490148456Spjd{ 491148456Spjd 492148456Spjd switch (algo) { 493148456Spjd case CRYPTO_NULL_CBC: 494148456Spjd if (keylen == 0) 495148456Spjd keylen = 64 * 8; 496148456Spjd else { 497148456Spjd if (keylen > 64 * 8) 498148456Spjd keylen = 0; 499148456Spjd } 500148456Spjd return (keylen); 501211927Spjd case CRYPTO_AES_CBC: 502172031Spjd case CRYPTO_CAMELLIA_CBC: 503148456Spjd switch (keylen) { 504148456Spjd case 0: 505148456Spjd return (128); 506148456Spjd case 128: 507148456Spjd case 192: 508148456Spjd case 256: 509148456Spjd return (keylen); 510148456Spjd default: 511148456Spjd return (0); 512148456Spjd } 513213070Spjd case CRYPTO_AES_XTS: 514213070Spjd switch (keylen) { 515213070Spjd case 0: 516213070Spjd return (128); 517213070Spjd case 128: 518213070Spjd case 256: 519213070Spjd return (keylen); 520213070Spjd default: 521213070Spjd return (0); 522213070Spjd } 523148456Spjd case CRYPTO_BLF_CBC: 524148456Spjd if (keylen == 0) 525148456Spjd return (128); 526148456Spjd if (keylen < 128 || keylen > 448) 527148456Spjd return (0); 528148456Spjd if ((keylen % 32) != 0) 529148456Spjd return (0); 530148456Spjd return (keylen); 531148456Spjd case CRYPTO_3DES_CBC: 532148456Spjd if (keylen == 0 || keylen == 192) 533148456Spjd return (192); 534148456Spjd return (0); 535148456Spjd default: 536148456Spjd return (0); 537148456Spjd } 538148456Spjd} 539148456Spjd 540159307Spjdstatic __inline u_int 541159307Spjdg_eli_hashlen(u_int algo) 542159307Spjd{ 543159307Spjd 544159307Spjd switch (algo) { 545159307Spjd case CRYPTO_MD5_HMAC: 546159307Spjd return (16); 547159307Spjd case CRYPTO_SHA1_HMAC: 548159307Spjd return (20); 549159307Spjd case CRYPTO_RIPEMD160_HMAC: 550159307Spjd return (20); 551159307Spjd case CRYPTO_SHA2_256_HMAC: 552159307Spjd return (32); 553159307Spjd case CRYPTO_SHA2_384_HMAC: 554159307Spjd return (48); 555159307Spjd case CRYPTO_SHA2_512_HMAC: 556159307Spjd return (64); 557159307Spjd } 558159307Spjd return (0); 559159307Spjd} 560159307Spjd 561148456Spjd#ifdef _KERNEL 562148456Spjdint g_eli_read_metadata(struct g_class *mp, struct g_provider *pp, 563148456Spjd struct g_eli_metadata *md); 564148456Spjdstruct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp, 565148456Spjd struct g_provider *bpp, const struct g_eli_metadata *md, 566148456Spjd const u_char *mkey, int nkey); 567148456Spjdint g_eli_destroy(struct g_eli_softc *sc, boolean_t force); 568148456Spjd 569148456Spjdint g_eli_access(struct g_provider *pp, int dr, int dw, int de); 570148456Spjdvoid g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb); 571159307Spjd 572159307Spjdvoid g_eli_read_done(struct bio *bp); 573159307Spjdvoid g_eli_write_done(struct bio *bp); 574159307Spjdint g_eli_crypto_rerun(struct cryptop *crp); 575159307Spjdvoid g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv, 576159307Spjd size_t size); 577159307Spjd 578214118Spjdvoid g_eli_crypto_read(struct g_eli_softc *sc, struct bio *bp, boolean_t fromworker); 579159307Spjdvoid g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp); 580159307Spjd 581159307Spjdvoid g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp); 582159307Spjdvoid g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp); 583148456Spjd#endif 584148456Spjd 585148456Spjdvoid g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key); 586148456Spjdint g_eli_mkey_decrypt(const struct g_eli_metadata *md, 587148456Spjd const unsigned char *key, unsigned char *mkey, unsigned *nkeyp); 588148456Spjdint g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen, 589148456Spjd unsigned char *mkey); 590159307Spjd#ifdef _KERNEL 591159307Spjdvoid g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey); 592159307Spjd#endif 593148456Spjd 594148456Spjdint g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize, 595148456Spjd const u_char *key, size_t keysize); 596148456Spjdint g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize, 597148456Spjd const u_char *key, size_t keysize); 598148456Spjd 599148456Spjdstruct hmac_ctx { 600148456Spjd SHA512_CTX shactx; 601148456Spjd u_char k_opad[128]; 602148456Spjd}; 603148456Spjd 604148456Spjdvoid g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey, 605148456Spjd size_t hkeylen); 606148456Spjdvoid g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data, 607148456Spjd size_t datasize); 608148456Spjdvoid g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize); 609148456Spjdvoid g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize, 610148456Spjd const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize); 611220922Spjd 612220922Spjd#ifdef _KERNEL 613220922Spjdvoid g_eli_key_init(struct g_eli_softc *sc); 614220922Spjdvoid g_eli_key_destroy(struct g_eli_softc *sc); 615220922Spjduint8_t *g_eli_key_hold(struct g_eli_softc *sc, off_t offset, size_t blocksize); 616220922Spjdvoid g_eli_key_drop(struct g_eli_softc *sc, uint8_t *rawkey); 617220922Spjd#endif 618148456Spjd#endif /* !_G_ELI_H_ */ 619