g_eli.h revision 220922
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 220922 2011-04-21 13:31:43Z 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 66161220Spjd * (flag G_ELI_FLAG_NATIVE_BYTE_ORDER will be set for older versions). 67213070Spjd * 5 - Added multiple encrypton keys and AES-XTS support. 68148456Spjd */ 69213067Spjd#define G_ELI_VERSION 5 70148456Spjd 71161127Spjd/* ON DISK FLAGS. */ 72148456Spjd/* Use random, onetime keys. */ 73161220Spjd#define G_ELI_FLAG_ONETIME 0x00000001 74148456Spjd/* Ask for the passphrase from the kernel, before mounting root. */ 75161220Spjd#define G_ELI_FLAG_BOOT 0x00000002 76148456Spjd/* Detach on last close, if we were open for writing. */ 77161220Spjd#define G_ELI_FLAG_WO_DETACH 0x00000004 78148456Spjd/* Detach on last close. */ 79161220Spjd#define G_ELI_FLAG_RW_DETACH 0x00000008 80159307Spjd/* Provide data authentication. */ 81161220Spjd#define G_ELI_FLAG_AUTH 0x00000010 82161127Spjd/* Provider is read-only, we should deny all write attempts. */ 83161220Spjd#define G_ELI_FLAG_RO 0x00000020 84161127Spjd/* RUNTIME FLAGS. */ 85148456Spjd/* Provider was open for writing. */ 86161220Spjd#define G_ELI_FLAG_WOPEN 0x00010000 87148456Spjd/* Destroy device. */ 88161220Spjd#define G_ELI_FLAG_DESTROY 0x00020000 89161220Spjd/* Provider uses native byte-order for IV generation. */ 90161220Spjd#define G_ELI_FLAG_NATIVE_BYTE_ORDER 0x00040000 91213067Spjd/* Provider uses single encryption key. */ 92213067Spjd#define G_ELI_FLAG_SINGLE_KEY 0x00080000 93214118Spjd/* Device suspended. */ 94214118Spjd#define G_ELI_FLAG_SUSPEND 0x00100000 95148456Spjd 96214118Spjd#define G_ELI_NEW_BIO 255 97214118Spjd 98148456Spjd#define SHA512_MDLEN 64 99159307Spjd#define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH 100148456Spjd 101148456Spjd#define G_ELI_MAXMKEYS 2 102148456Spjd#define G_ELI_MAXKEYLEN 64 103148456Spjd#define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN 104148456Spjd#define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN 105159307Spjd#define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN 106148456Spjd#define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN 107148456Spjd#define G_ELI_SALTLEN 64 108148456Spjd#define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN) 109148456Spjd/* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */ 110148456Spjd#define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN) 111213062Spjd#define G_ELI_OVERWRITES 5 112213067Spjd/* Switch data encryption key every 2^20 blocks. */ 113213067Spjd#define G_ELI_KEY_SHIFT 20 114148456Spjd 115148456Spjd#ifdef _KERNEL 116213165Spjdextern int g_eli_debug; 117148456Spjdextern u_int g_eli_overwrites; 118159307Spjdextern u_int g_eli_batch; 119148456Spjd 120214163Spjd#define G_ELI_CRYPTO_UNKNOWN 0 121148456Spjd#define G_ELI_CRYPTO_HW 1 122148456Spjd#define G_ELI_CRYPTO_SW 2 123148456Spjd 124148456Spjd#define G_ELI_DEBUG(lvl, ...) do { \ 125148456Spjd if (g_eli_debug >= (lvl)) { \ 126148456Spjd printf("GEOM_ELI"); \ 127148456Spjd if (g_eli_debug > 0) \ 128148456Spjd printf("[%u]", lvl); \ 129148456Spjd printf(": "); \ 130148456Spjd printf(__VA_ARGS__); \ 131148456Spjd printf("\n"); \ 132148456Spjd } \ 133148456Spjd} while (0) 134148456Spjd#define G_ELI_LOGREQ(lvl, bp, ...) do { \ 135148456Spjd if (g_eli_debug >= (lvl)) { \ 136148456Spjd printf("GEOM_ELI"); \ 137148456Spjd if (g_eli_debug > 0) \ 138148456Spjd printf("[%u]", lvl); \ 139148456Spjd printf(": "); \ 140148456Spjd printf(__VA_ARGS__); \ 141148456Spjd printf(" "); \ 142148456Spjd g_print_bio(bp); \ 143148456Spjd printf("\n"); \ 144148456Spjd } \ 145148456Spjd} while (0) 146148456Spjd 147148456Spjdstruct g_eli_worker { 148148456Spjd struct g_eli_softc *w_softc; 149148456Spjd struct proc *w_proc; 150148456Spjd u_int w_number; 151148456Spjd uint64_t w_sid; 152214118Spjd boolean_t w_active; 153148456Spjd LIST_ENTRY(g_eli_worker) w_next; 154148456Spjd}; 155148456Spjd 156148456Spjdstruct g_eli_softc { 157220922Spjd struct g_geom *sc_geom; 158220922Spjd u_int sc_crypto; 159220922Spjd uint8_t sc_mkey[G_ELI_DATAIVKEYLEN]; 160220922Spjd uint8_t sc_ekey[G_ELI_DATAKEYLEN]; 161220922Spjd TAILQ_HEAD(, g_eli_key) sc_ekeys_queue; 162220922Spjd RB_HEAD(g_eli_key_tree, g_eli_key) sc_ekeys_tree; 163220922Spjd struct mtx sc_ekeys_lock; 164220922Spjd uint64_t sc_ekeys_total; 165220922Spjd uint64_t sc_ekeys_allocated; 166220922Spjd u_int sc_ealgo; 167220922Spjd u_int sc_ekeylen; 168220922Spjd uint8_t sc_akey[G_ELI_AUTHKEYLEN]; 169220922Spjd u_int sc_aalgo; 170220922Spjd u_int sc_akeylen; 171220922Spjd u_int sc_alen; 172220922Spjd SHA256_CTX sc_akeyctx; 173220922Spjd uint8_t sc_ivkey[G_ELI_IVKEYLEN]; 174220922Spjd SHA256_CTX sc_ivctx; 175220922Spjd int sc_nkey; 176220922Spjd uint32_t sc_flags; 177220922Spjd int sc_inflight; 178220922Spjd off_t sc_mediasize; 179220922Spjd size_t sc_sectorsize; 180220922Spjd u_int sc_bytes_per_sector; 181220922Spjd u_int sc_data_per_sector; 182148456Spjd 183148456Spjd /* Only for software cryptography. */ 184148456Spjd struct bio_queue_head sc_queue; 185220922Spjd struct mtx sc_queue_mtx; 186148456Spjd LIST_HEAD(, g_eli_worker) sc_workers; 187148456Spjd}; 188148456Spjd#define sc_name sc_geom->name 189148456Spjd#endif /* _KERNEL */ 190148456Spjd 191148456Spjdstruct g_eli_metadata { 192148456Spjd char md_magic[16]; /* Magic value. */ 193148456Spjd uint32_t md_version; /* Version number. */ 194148456Spjd uint32_t md_flags; /* Additional flags. */ 195159307Spjd uint16_t md_ealgo; /* Encryption algorithm. */ 196148456Spjd uint16_t md_keylen; /* Key length. */ 197159307Spjd uint16_t md_aalgo; /* Authentication algorithm. */ 198148456Spjd uint64_t md_provsize; /* Provider's size. */ 199148456Spjd uint32_t md_sectorsize; /* Sector size. */ 200148456Spjd uint8_t md_keys; /* Available keys. */ 201149303Spjd int32_t md_iterations; /* Number of iterations for PKCS#5v2. */ 202148456Spjd uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */ 203148456Spjd /* Encrypted master key (IV-key, Data-key, HMAC). */ 204148456Spjd uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN]; 205148456Spjd u_char md_hash[16]; /* MD5 hash. */ 206149323Spjd} __packed; 207148456Spjd#ifndef _OpenSSL_ 208148456Spjdstatic __inline void 209148456Spjdeli_metadata_encode(struct g_eli_metadata *md, u_char *data) 210148456Spjd{ 211148456Spjd MD5_CTX ctx; 212148456Spjd u_char *p; 213148456Spjd 214148456Spjd p = data; 215148456Spjd bcopy(md->md_magic, p, sizeof(md->md_magic)); p += sizeof(md->md_magic); 216148456Spjd le32enc(p, md->md_version); p += sizeof(md->md_version); 217148456Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 218159307Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 219148456Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 220159307Spjd le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo); 221148456Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 222148456Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 223148456Spjd *p = md->md_keys; p += sizeof(md->md_keys); 224148456Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 225148456Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 226148456Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 227148456Spjd MD5Init(&ctx); 228148456Spjd MD5Update(&ctx, data, p - data); 229157305Spjd MD5Final(md->md_hash, &ctx); 230148456Spjd bcopy(md->md_hash, p, sizeof(md->md_hash)); 231148456Spjd} 232148456Spjdstatic __inline int 233148456Spjdeli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md) 234148456Spjd{ 235148456Spjd MD5_CTX ctx; 236148456Spjd const u_char *p; 237148456Spjd 238148456Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 239148456Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 240159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 241148456Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 242148456Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 243148456Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 244148456Spjd md->md_keys = *p; p += sizeof(md->md_keys); 245148456Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 246148456Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 247148456Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 248148456Spjd MD5Init(&ctx); 249148456Spjd MD5Update(&ctx, data, p - data); 250157305Spjd MD5Final(md->md_hash, &ctx); 251148456Spjd if (bcmp(md->md_hash, p, 16) != 0) 252148456Spjd return (EINVAL); 253148456Spjd return (0); 254148456Spjd} 255212845Sbrian 256148456Spjdstatic __inline int 257213067Spjdeli_metadata_decode_v1v2v3v4v5(const u_char *data, struct g_eli_metadata *md) 258159307Spjd{ 259159307Spjd MD5_CTX ctx; 260159307Spjd const u_char *p; 261159307Spjd 262159307Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 263159307Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 264159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 265159307Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 266159307Spjd md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo); 267159307Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 268159307Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 269159307Spjd md->md_keys = *p; p += sizeof(md->md_keys); 270159307Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 271159307Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 272159307Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 273159307Spjd MD5Init(&ctx); 274159307Spjd MD5Update(&ctx, data, p - data); 275159307Spjd MD5Final(md->md_hash, &ctx); 276159307Spjd if (bcmp(md->md_hash, p, 16) != 0) 277159307Spjd return (EINVAL); 278159307Spjd return (0); 279159307Spjd} 280159307Spjdstatic __inline int 281148456Spjdeli_metadata_decode(const u_char *data, struct g_eli_metadata *md) 282148456Spjd{ 283148456Spjd int error; 284148456Spjd 285148456Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 286148456Spjd md->md_version = le32dec(data + sizeof(md->md_magic)); 287148456Spjd switch (md->md_version) { 288148456Spjd case 0: 289148456Spjd error = eli_metadata_decode_v0(data, md); 290148456Spjd break; 291159307Spjd case 1: 292161217Spjd case 2: 293162353Spjd case 3: 294212845Sbrian case 4: 295213067Spjd case 5: 296213067Spjd error = eli_metadata_decode_v1v2v3v4v5(data, md); 297159307Spjd break; 298148456Spjd default: 299148456Spjd error = EINVAL; 300148456Spjd break; 301148456Spjd } 302148456Spjd return (error); 303148456Spjd} 304148456Spjd#endif /* !_OpenSSL */ 305148456Spjd 306148456Spjdstatic __inline u_int 307159307Spjdg_eli_str2ealgo(const char *name) 308148456Spjd{ 309148456Spjd 310148867Spjd if (strcasecmp("null", name) == 0) 311148456Spjd return (CRYPTO_NULL_CBC); 312213070Spjd else if (strcasecmp("null-cbc", name) == 0) 313213070Spjd return (CRYPTO_NULL_CBC); 314148867Spjd else if (strcasecmp("aes", name) == 0) 315213070Spjd return (CRYPTO_AES_XTS); 316213070Spjd else if (strcasecmp("aes-cbc", name) == 0) 317148456Spjd return (CRYPTO_AES_CBC); 318213070Spjd else if (strcasecmp("aes-xts", name) == 0) 319213070Spjd return (CRYPTO_AES_XTS); 320148867Spjd else if (strcasecmp("blowfish", name) == 0) 321148456Spjd return (CRYPTO_BLF_CBC); 322213070Spjd else if (strcasecmp("blowfish-cbc", name) == 0) 323213070Spjd return (CRYPTO_BLF_CBC); 324172031Spjd else if (strcasecmp("camellia", name) == 0) 325172031Spjd return (CRYPTO_CAMELLIA_CBC); 326213070Spjd else if (strcasecmp("camellia-cbc", name) == 0) 327213070Spjd return (CRYPTO_CAMELLIA_CBC); 328148867Spjd else if (strcasecmp("3des", name) == 0) 329148456Spjd return (CRYPTO_3DES_CBC); 330213070Spjd else if (strcasecmp("3des-cbc", name) == 0) 331213070Spjd return (CRYPTO_3DES_CBC); 332148456Spjd return (CRYPTO_ALGORITHM_MIN - 1); 333148456Spjd} 334148456Spjd 335159307Spjdstatic __inline u_int 336159307Spjdg_eli_str2aalgo(const char *name) 337159307Spjd{ 338159307Spjd 339159307Spjd if (strcasecmp("hmac/md5", name) == 0) 340159307Spjd return (CRYPTO_MD5_HMAC); 341159307Spjd else if (strcasecmp("hmac/sha1", name) == 0) 342159307Spjd return (CRYPTO_SHA1_HMAC); 343159307Spjd else if (strcasecmp("hmac/ripemd160", name) == 0) 344159307Spjd return (CRYPTO_RIPEMD160_HMAC); 345159307Spjd else if (strcasecmp("hmac/sha256", name) == 0) 346159307Spjd return (CRYPTO_SHA2_256_HMAC); 347159307Spjd else if (strcasecmp("hmac/sha384", name) == 0) 348159307Spjd return (CRYPTO_SHA2_384_HMAC); 349159307Spjd else if (strcasecmp("hmac/sha512", name) == 0) 350159307Spjd return (CRYPTO_SHA2_512_HMAC); 351159307Spjd return (CRYPTO_ALGORITHM_MIN - 1); 352159307Spjd} 353159307Spjd 354148456Spjdstatic __inline const char * 355148456Spjdg_eli_algo2str(u_int algo) 356148456Spjd{ 357148456Spjd 358148456Spjd switch (algo) { 359148456Spjd case CRYPTO_NULL_CBC: 360148456Spjd return ("NULL"); 361148456Spjd case CRYPTO_AES_CBC: 362159307Spjd return ("AES-CBC"); 363213070Spjd case CRYPTO_AES_XTS: 364213070Spjd return ("AES-XTS"); 365148456Spjd case CRYPTO_BLF_CBC: 366159307Spjd return ("Blowfish-CBC"); 367172031Spjd case CRYPTO_CAMELLIA_CBC: 368172031Spjd return ("CAMELLIA-CBC"); 369148456Spjd case CRYPTO_3DES_CBC: 370159307Spjd return ("3DES-CBC"); 371159307Spjd case CRYPTO_MD5_HMAC: 372159307Spjd return ("HMAC/MD5"); 373159307Spjd case CRYPTO_SHA1_HMAC: 374159307Spjd return ("HMAC/SHA1"); 375159307Spjd case CRYPTO_RIPEMD160_HMAC: 376159307Spjd return ("HMAC/RIPEMD160"); 377159307Spjd case CRYPTO_SHA2_256_HMAC: 378159307Spjd return ("HMAC/SHA256"); 379159307Spjd case CRYPTO_SHA2_384_HMAC: 380159307Spjd return ("HMAC/SHA384"); 381159307Spjd case CRYPTO_SHA2_512_HMAC: 382159307Spjd return ("HMAC/SHA512"); 383148456Spjd } 384148456Spjd return ("unknown"); 385148456Spjd} 386148456Spjd 387148456Spjdstatic __inline void 388148456Spjdeli_metadata_dump(const struct g_eli_metadata *md) 389148456Spjd{ 390148456Spjd static const char hex[] = "0123456789abcdef"; 391148456Spjd char str[sizeof(md->md_mkeys) * 2 + 1]; 392148456Spjd u_int i; 393148456Spjd 394148456Spjd printf(" magic: %s\n", md->md_magic); 395148456Spjd printf(" version: %u\n", (u_int)md->md_version); 396148456Spjd printf(" flags: 0x%x\n", (u_int)md->md_flags); 397159307Spjd printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo)); 398148456Spjd printf(" keylen: %u\n", (u_int)md->md_keylen); 399159307Spjd if (md->md_flags & G_ELI_FLAG_AUTH) 400159307Spjd printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo)); 401148456Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 402148456Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 403148456Spjd printf(" keys: 0x%02x\n", (u_int)md->md_keys); 404148456Spjd printf("iterations: %u\n", (u_int)md->md_iterations); 405148456Spjd bzero(str, sizeof(str)); 406148456Spjd for (i = 0; i < sizeof(md->md_salt); i++) { 407148456Spjd str[i * 2] = hex[md->md_salt[i] >> 4]; 408148456Spjd str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f]; 409148456Spjd } 410149303Spjd printf(" Salt: %s\n", str); 411148456Spjd bzero(str, sizeof(str)); 412148456Spjd for (i = 0; i < sizeof(md->md_mkeys); i++) { 413148456Spjd str[i * 2] = hex[md->md_mkeys[i] >> 4]; 414148456Spjd str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f]; 415148456Spjd } 416148456Spjd printf("Master Key: %s\n", str); 417148456Spjd bzero(str, sizeof(str)); 418148456Spjd for (i = 0; i < 16; i++) { 419148456Spjd str[i * 2] = hex[md->md_hash[i] >> 4]; 420148456Spjd str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 421148456Spjd } 422149303Spjd printf(" MD5 hash: %s\n", str); 423148456Spjd} 424148456Spjd 425148456Spjdstatic __inline u_int 426148456Spjdg_eli_keylen(u_int algo, u_int keylen) 427148456Spjd{ 428148456Spjd 429148456Spjd switch (algo) { 430148456Spjd case CRYPTO_NULL_CBC: 431148456Spjd if (keylen == 0) 432148456Spjd keylen = 64 * 8; 433148456Spjd else { 434148456Spjd if (keylen > 64 * 8) 435148456Spjd keylen = 0; 436148456Spjd } 437148456Spjd return (keylen); 438211927Spjd case CRYPTO_AES_CBC: 439172031Spjd case CRYPTO_CAMELLIA_CBC: 440148456Spjd switch (keylen) { 441148456Spjd case 0: 442148456Spjd return (128); 443148456Spjd case 128: 444148456Spjd case 192: 445148456Spjd case 256: 446148456Spjd return (keylen); 447148456Spjd default: 448148456Spjd return (0); 449148456Spjd } 450213070Spjd case CRYPTO_AES_XTS: 451213070Spjd switch (keylen) { 452213070Spjd case 0: 453213070Spjd return (128); 454213070Spjd case 128: 455213070Spjd case 256: 456213070Spjd return (keylen); 457213070Spjd default: 458213070Spjd return (0); 459213070Spjd } 460148456Spjd case CRYPTO_BLF_CBC: 461148456Spjd if (keylen == 0) 462148456Spjd return (128); 463148456Spjd if (keylen < 128 || keylen > 448) 464148456Spjd return (0); 465148456Spjd if ((keylen % 32) != 0) 466148456Spjd return (0); 467148456Spjd return (keylen); 468148456Spjd case CRYPTO_3DES_CBC: 469148456Spjd if (keylen == 0 || keylen == 192) 470148456Spjd return (192); 471148456Spjd return (0); 472148456Spjd default: 473148456Spjd return (0); 474148456Spjd } 475148456Spjd} 476148456Spjd 477159307Spjdstatic __inline u_int 478159307Spjdg_eli_hashlen(u_int algo) 479159307Spjd{ 480159307Spjd 481159307Spjd switch (algo) { 482159307Spjd case CRYPTO_MD5_HMAC: 483159307Spjd return (16); 484159307Spjd case CRYPTO_SHA1_HMAC: 485159307Spjd return (20); 486159307Spjd case CRYPTO_RIPEMD160_HMAC: 487159307Spjd return (20); 488159307Spjd case CRYPTO_SHA2_256_HMAC: 489159307Spjd return (32); 490159307Spjd case CRYPTO_SHA2_384_HMAC: 491159307Spjd return (48); 492159307Spjd case CRYPTO_SHA2_512_HMAC: 493159307Spjd return (64); 494159307Spjd } 495159307Spjd return (0); 496159307Spjd} 497159307Spjd 498148456Spjd#ifdef _KERNEL 499148456Spjdint g_eli_read_metadata(struct g_class *mp, struct g_provider *pp, 500148456Spjd struct g_eli_metadata *md); 501148456Spjdstruct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp, 502148456Spjd struct g_provider *bpp, const struct g_eli_metadata *md, 503148456Spjd const u_char *mkey, int nkey); 504148456Spjdint g_eli_destroy(struct g_eli_softc *sc, boolean_t force); 505148456Spjd 506148456Spjdint g_eli_access(struct g_provider *pp, int dr, int dw, int de); 507148456Spjdvoid g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb); 508159307Spjd 509159307Spjdvoid g_eli_read_done(struct bio *bp); 510159307Spjdvoid g_eli_write_done(struct bio *bp); 511159307Spjdint g_eli_crypto_rerun(struct cryptop *crp); 512213067Spjduint8_t *g_eli_crypto_key(struct g_eli_softc *sc, off_t offset, 513213067Spjd size_t blocksize); 514159307Spjdvoid g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv, 515159307Spjd size_t size); 516159307Spjd 517214118Spjdvoid g_eli_crypto_read(struct g_eli_softc *sc, struct bio *bp, boolean_t fromworker); 518159307Spjdvoid g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp); 519159307Spjd 520159307Spjdvoid g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp); 521159307Spjdvoid g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp); 522148456Spjd#endif 523148456Spjd 524148456Spjdvoid g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key); 525148456Spjdint g_eli_mkey_decrypt(const struct g_eli_metadata *md, 526148456Spjd const unsigned char *key, unsigned char *mkey, unsigned *nkeyp); 527148456Spjdint g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen, 528148456Spjd unsigned char *mkey); 529159307Spjd#ifdef _KERNEL 530159307Spjdvoid g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey); 531159307Spjd#endif 532148456Spjd 533148456Spjdint g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize, 534148456Spjd const u_char *key, size_t keysize); 535148456Spjdint g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize, 536148456Spjd const u_char *key, size_t keysize); 537148456Spjd 538148456Spjdstruct hmac_ctx { 539148456Spjd SHA512_CTX shactx; 540148456Spjd u_char k_opad[128]; 541148456Spjd}; 542148456Spjd 543148456Spjdvoid g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey, 544148456Spjd size_t hkeylen); 545148456Spjdvoid g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data, 546148456Spjd size_t datasize); 547148456Spjdvoid g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize); 548148456Spjdvoid g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize, 549148456Spjd const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize); 550220922Spjd 551220922Spjd#ifdef _KERNEL 552220922Spjdvoid g_eli_key_init(struct g_eli_softc *sc); 553220922Spjdvoid g_eli_key_destroy(struct g_eli_softc *sc); 554220922Spjduint8_t *g_eli_key_hold(struct g_eli_softc *sc, off_t offset, size_t blocksize); 555220922Spjdvoid g_eli_key_drop(struct g_eli_softc *sc, uint8_t *rawkey); 556220922Spjd#endif 557148456Spjd#endif /* !_G_ELI_H_ */ 558