g_eli.h revision 238116
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 238116 2012-07-04 17:54:17Z 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). 71238116Spjd * 7 - Encryption keys are now generated from the Data Key and not from the 72238116Spjd * IV Key (the G_ELI_FLAG_ENC_IVKEY flag will be set for older versions). 73148456Spjd */ 74221628Spjd#define G_ELI_VERSION_00 0 75221628Spjd#define G_ELI_VERSION_01 1 76221628Spjd#define G_ELI_VERSION_02 2 77221628Spjd#define G_ELI_VERSION_03 3 78221628Spjd#define G_ELI_VERSION_04 4 79221628Spjd#define G_ELI_VERSION_05 5 80221628Spjd#define G_ELI_VERSION_06 6 81238116Spjd#define G_ELI_VERSION_07 7 82238116Spjd#define G_ELI_VERSION G_ELI_VERSION_07 83148456Spjd 84161127Spjd/* ON DISK FLAGS. */ 85148456Spjd/* Use random, onetime keys. */ 86161220Spjd#define G_ELI_FLAG_ONETIME 0x00000001 87148456Spjd/* Ask for the passphrase from the kernel, before mounting root. */ 88161220Spjd#define G_ELI_FLAG_BOOT 0x00000002 89148456Spjd/* Detach on last close, if we were open for writing. */ 90161220Spjd#define G_ELI_FLAG_WO_DETACH 0x00000004 91148456Spjd/* Detach on last close. */ 92161220Spjd#define G_ELI_FLAG_RW_DETACH 0x00000008 93159307Spjd/* Provide data authentication. */ 94161220Spjd#define G_ELI_FLAG_AUTH 0x00000010 95161127Spjd/* Provider is read-only, we should deny all write attempts. */ 96161220Spjd#define G_ELI_FLAG_RO 0x00000020 97161127Spjd/* RUNTIME FLAGS. */ 98148456Spjd/* Provider was open for writing. */ 99161220Spjd#define G_ELI_FLAG_WOPEN 0x00010000 100148456Spjd/* Destroy device. */ 101161220Spjd#define G_ELI_FLAG_DESTROY 0x00020000 102161220Spjd/* Provider uses native byte-order for IV generation. */ 103161220Spjd#define G_ELI_FLAG_NATIVE_BYTE_ORDER 0x00040000 104213067Spjd/* Provider uses single encryption key. */ 105213067Spjd#define G_ELI_FLAG_SINGLE_KEY 0x00080000 106214118Spjd/* Device suspended. */ 107214118Spjd#define G_ELI_FLAG_SUSPEND 0x00100000 108221628Spjd/* Provider uses first encryption key. */ 109221628Spjd#define G_ELI_FLAG_FIRST_KEY 0x00200000 110238116Spjd/* Provider uses IV-Key for encryption key generation. */ 111238116Spjd#define G_ELI_FLAG_ENC_IVKEY 0x00400000 112148456Spjd 113214118Spjd#define G_ELI_NEW_BIO 255 114214118Spjd 115148456Spjd#define SHA512_MDLEN 64 116159307Spjd#define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH 117148456Spjd 118148456Spjd#define G_ELI_MAXMKEYS 2 119148456Spjd#define G_ELI_MAXKEYLEN 64 120148456Spjd#define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN 121148456Spjd#define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN 122159307Spjd#define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN 123148456Spjd#define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN 124148456Spjd#define G_ELI_SALTLEN 64 125148456Spjd#define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN) 126148456Spjd/* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */ 127148456Spjd#define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN) 128213062Spjd#define G_ELI_OVERWRITES 5 129213067Spjd/* Switch data encryption key every 2^20 blocks. */ 130213067Spjd#define G_ELI_KEY_SHIFT 20 131148456Spjd 132148456Spjd#ifdef _KERNEL 133213165Spjdextern int g_eli_debug; 134148456Spjdextern u_int g_eli_overwrites; 135159307Spjdextern u_int g_eli_batch; 136148456Spjd 137214163Spjd#define G_ELI_CRYPTO_UNKNOWN 0 138148456Spjd#define G_ELI_CRYPTO_HW 1 139148456Spjd#define G_ELI_CRYPTO_SW 2 140148456Spjd 141148456Spjd#define G_ELI_DEBUG(lvl, ...) do { \ 142148456Spjd if (g_eli_debug >= (lvl)) { \ 143148456Spjd printf("GEOM_ELI"); \ 144148456Spjd if (g_eli_debug > 0) \ 145148456Spjd printf("[%u]", lvl); \ 146148456Spjd printf(": "); \ 147148456Spjd printf(__VA_ARGS__); \ 148148456Spjd printf("\n"); \ 149148456Spjd } \ 150148456Spjd} while (0) 151148456Spjd#define G_ELI_LOGREQ(lvl, bp, ...) do { \ 152148456Spjd if (g_eli_debug >= (lvl)) { \ 153148456Spjd printf("GEOM_ELI"); \ 154148456Spjd if (g_eli_debug > 0) \ 155148456Spjd printf("[%u]", lvl); \ 156148456Spjd printf(": "); \ 157148456Spjd printf(__VA_ARGS__); \ 158148456Spjd printf(" "); \ 159148456Spjd g_print_bio(bp); \ 160148456Spjd printf("\n"); \ 161148456Spjd } \ 162148456Spjd} while (0) 163148456Spjd 164148456Spjdstruct g_eli_worker { 165148456Spjd struct g_eli_softc *w_softc; 166148456Spjd struct proc *w_proc; 167148456Spjd u_int w_number; 168148456Spjd uint64_t w_sid; 169214118Spjd boolean_t w_active; 170148456Spjd LIST_ENTRY(g_eli_worker) w_next; 171148456Spjd}; 172148456Spjd 173148456Spjdstruct g_eli_softc { 174220922Spjd struct g_geom *sc_geom; 175226733Spjd u_int sc_version; 176220922Spjd u_int sc_crypto; 177220922Spjd uint8_t sc_mkey[G_ELI_DATAIVKEYLEN]; 178220922Spjd uint8_t sc_ekey[G_ELI_DATAKEYLEN]; 179220922Spjd TAILQ_HEAD(, g_eli_key) sc_ekeys_queue; 180220922Spjd RB_HEAD(g_eli_key_tree, g_eli_key) sc_ekeys_tree; 181220922Spjd struct mtx sc_ekeys_lock; 182220922Spjd uint64_t sc_ekeys_total; 183220922Spjd uint64_t sc_ekeys_allocated; 184220922Spjd u_int sc_ealgo; 185220922Spjd u_int sc_ekeylen; 186220922Spjd uint8_t sc_akey[G_ELI_AUTHKEYLEN]; 187220922Spjd u_int sc_aalgo; 188220922Spjd u_int sc_akeylen; 189220922Spjd u_int sc_alen; 190220922Spjd SHA256_CTX sc_akeyctx; 191220922Spjd uint8_t sc_ivkey[G_ELI_IVKEYLEN]; 192220922Spjd SHA256_CTX sc_ivctx; 193220922Spjd int sc_nkey; 194220922Spjd uint32_t sc_flags; 195220922Spjd int sc_inflight; 196220922Spjd off_t sc_mediasize; 197220922Spjd size_t sc_sectorsize; 198220922Spjd u_int sc_bytes_per_sector; 199220922Spjd u_int sc_data_per_sector; 200226840Spjd boolean_t sc_cpubind; 201148456Spjd 202148456Spjd /* Only for software cryptography. */ 203148456Spjd struct bio_queue_head sc_queue; 204220922Spjd struct mtx sc_queue_mtx; 205148456Spjd LIST_HEAD(, g_eli_worker) sc_workers; 206148456Spjd}; 207148456Spjd#define sc_name sc_geom->name 208148456Spjd#endif /* _KERNEL */ 209148456Spjd 210148456Spjdstruct g_eli_metadata { 211148456Spjd char md_magic[16]; /* Magic value. */ 212148456Spjd uint32_t md_version; /* Version number. */ 213148456Spjd uint32_t md_flags; /* Additional flags. */ 214159307Spjd uint16_t md_ealgo; /* Encryption algorithm. */ 215148456Spjd uint16_t md_keylen; /* Key length. */ 216159307Spjd uint16_t md_aalgo; /* Authentication algorithm. */ 217148456Spjd uint64_t md_provsize; /* Provider's size. */ 218148456Spjd uint32_t md_sectorsize; /* Sector size. */ 219148456Spjd uint8_t md_keys; /* Available keys. */ 220149303Spjd int32_t md_iterations; /* Number of iterations for PKCS#5v2. */ 221148456Spjd uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */ 222148456Spjd /* Encrypted master key (IV-key, Data-key, HMAC). */ 223148456Spjd uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN]; 224148456Spjd u_char md_hash[16]; /* MD5 hash. */ 225149323Spjd} __packed; 226148456Spjd#ifndef _OpenSSL_ 227148456Spjdstatic __inline void 228226733Spjdeli_metadata_encode_v0(struct g_eli_metadata *md, u_char **datap) 229148456Spjd{ 230148456Spjd u_char *p; 231148456Spjd 232226733Spjd p = *datap; 233148456Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 234159307Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 235148456Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 236226733Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 237226733Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 238226733Spjd *p = md->md_keys; p += sizeof(md->md_keys); 239226733Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 240226733Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 241226733Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 242226733Spjd *datap = p; 243226733Spjd} 244226733Spjdstatic __inline void 245238116Spjdeli_metadata_encode_v1v2v3v4v5v6v7(struct g_eli_metadata *md, u_char **datap) 246226733Spjd{ 247226733Spjd u_char *p; 248226733Spjd 249226733Spjd p = *datap; 250226733Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 251226733Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 252226733Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 253159307Spjd le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo); 254148456Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 255148456Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 256148456Spjd *p = md->md_keys; p += sizeof(md->md_keys); 257148456Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 258148456Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 259148456Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 260226733Spjd *datap = p; 261226733Spjd} 262226733Spjdstatic __inline void 263226733Spjdeli_metadata_encode(struct g_eli_metadata *md, u_char *data) 264226733Spjd{ 265226733Spjd MD5_CTX ctx; 266226733Spjd u_char *p; 267226733Spjd 268226733Spjd p = data; 269226733Spjd bcopy(md->md_magic, p, sizeof(md->md_magic)); 270226733Spjd p += sizeof(md->md_magic); 271226733Spjd le32enc(p, md->md_version); 272226733Spjd p += sizeof(md->md_version); 273226733Spjd switch (md->md_version) { 274226733Spjd case G_ELI_VERSION_00: 275226733Spjd eli_metadata_encode_v0(md, &p); 276226733Spjd break; 277226733Spjd case G_ELI_VERSION_01: 278226733Spjd case G_ELI_VERSION_02: 279226733Spjd case G_ELI_VERSION_03: 280226733Spjd case G_ELI_VERSION_04: 281226733Spjd case G_ELI_VERSION_05: 282226733Spjd case G_ELI_VERSION_06: 283238116Spjd case G_ELI_VERSION_07: 284238116Spjd eli_metadata_encode_v1v2v3v4v5v6v7(md, &p); 285226733Spjd break; 286226733Spjd default: 287226733Spjd#ifdef _KERNEL 288226733Spjd panic("%s: Unsupported version %u.", __func__, 289226733Spjd (u_int)md->md_version); 290226733Spjd#else 291226733Spjd assert(!"Unsupported metadata version."); 292226733Spjd#endif 293226733Spjd } 294148456Spjd MD5Init(&ctx); 295148456Spjd MD5Update(&ctx, data, p - data); 296157305Spjd MD5Final(md->md_hash, &ctx); 297148456Spjd bcopy(md->md_hash, p, sizeof(md->md_hash)); 298148456Spjd} 299148456Spjdstatic __inline int 300148456Spjdeli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md) 301148456Spjd{ 302148456Spjd MD5_CTX ctx; 303148456Spjd const u_char *p; 304148456Spjd 305148456Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 306148456Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 307159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 308148456Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 309148456Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 310148456Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 311148456Spjd md->md_keys = *p; p += sizeof(md->md_keys); 312148456Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 313148456Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 314148456Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 315148456Spjd MD5Init(&ctx); 316148456Spjd MD5Update(&ctx, data, p - data); 317157305Spjd MD5Final(md->md_hash, &ctx); 318148456Spjd if (bcmp(md->md_hash, p, 16) != 0) 319148456Spjd return (EINVAL); 320148456Spjd return (0); 321148456Spjd} 322212845Sbrian 323148456Spjdstatic __inline int 324238116Spjdeli_metadata_decode_v1v2v3v4v5v6v7(const u_char *data, struct g_eli_metadata *md) 325159307Spjd{ 326159307Spjd MD5_CTX ctx; 327159307Spjd const u_char *p; 328159307Spjd 329159307Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 330159307Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 331159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 332159307Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 333159307Spjd md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo); 334159307Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 335159307Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 336159307Spjd md->md_keys = *p; p += sizeof(md->md_keys); 337159307Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 338159307Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 339159307Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 340159307Spjd MD5Init(&ctx); 341159307Spjd MD5Update(&ctx, data, p - data); 342159307Spjd MD5Final(md->md_hash, &ctx); 343159307Spjd if (bcmp(md->md_hash, p, 16) != 0) 344159307Spjd return (EINVAL); 345159307Spjd return (0); 346159307Spjd} 347159307Spjdstatic __inline int 348148456Spjdeli_metadata_decode(const u_char *data, struct g_eli_metadata *md) 349148456Spjd{ 350148456Spjd int error; 351148456Spjd 352148456Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 353226730Spjd if (strcmp(md->md_magic, G_ELI_MAGIC) != 0) 354226730Spjd return (EINVAL); 355148456Spjd md->md_version = le32dec(data + sizeof(md->md_magic)); 356148456Spjd switch (md->md_version) { 357221629Spjd case G_ELI_VERSION_00: 358148456Spjd error = eli_metadata_decode_v0(data, md); 359148456Spjd break; 360221629Spjd case G_ELI_VERSION_01: 361221629Spjd case G_ELI_VERSION_02: 362221629Spjd case G_ELI_VERSION_03: 363221629Spjd case G_ELI_VERSION_04: 364221629Spjd case G_ELI_VERSION_05: 365221629Spjd case G_ELI_VERSION_06: 366238116Spjd case G_ELI_VERSION_07: 367238116Spjd error = eli_metadata_decode_v1v2v3v4v5v6v7(data, md); 368159307Spjd break; 369148456Spjd default: 370226721Spjd error = EOPNOTSUPP; 371148456Spjd break; 372148456Spjd } 373148456Spjd return (error); 374148456Spjd} 375148456Spjd#endif /* !_OpenSSL */ 376148456Spjd 377148456Spjdstatic __inline u_int 378159307Spjdg_eli_str2ealgo(const char *name) 379148456Spjd{ 380148456Spjd 381148867Spjd if (strcasecmp("null", name) == 0) 382148456Spjd return (CRYPTO_NULL_CBC); 383213070Spjd else if (strcasecmp("null-cbc", name) == 0) 384213070Spjd return (CRYPTO_NULL_CBC); 385148867Spjd else if (strcasecmp("aes", name) == 0) 386213070Spjd return (CRYPTO_AES_XTS); 387213070Spjd else if (strcasecmp("aes-cbc", name) == 0) 388148456Spjd return (CRYPTO_AES_CBC); 389213070Spjd else if (strcasecmp("aes-xts", name) == 0) 390213070Spjd return (CRYPTO_AES_XTS); 391148867Spjd else if (strcasecmp("blowfish", name) == 0) 392148456Spjd return (CRYPTO_BLF_CBC); 393213070Spjd else if (strcasecmp("blowfish-cbc", name) == 0) 394213070Spjd return (CRYPTO_BLF_CBC); 395172031Spjd else if (strcasecmp("camellia", name) == 0) 396172031Spjd return (CRYPTO_CAMELLIA_CBC); 397213070Spjd else if (strcasecmp("camellia-cbc", name) == 0) 398213070Spjd return (CRYPTO_CAMELLIA_CBC); 399148867Spjd else if (strcasecmp("3des", name) == 0) 400148456Spjd return (CRYPTO_3DES_CBC); 401213070Spjd else if (strcasecmp("3des-cbc", name) == 0) 402213070Spjd return (CRYPTO_3DES_CBC); 403148456Spjd return (CRYPTO_ALGORITHM_MIN - 1); 404148456Spjd} 405148456Spjd 406159307Spjdstatic __inline u_int 407159307Spjdg_eli_str2aalgo(const char *name) 408159307Spjd{ 409159307Spjd 410159307Spjd if (strcasecmp("hmac/md5", name) == 0) 411159307Spjd return (CRYPTO_MD5_HMAC); 412159307Spjd else if (strcasecmp("hmac/sha1", name) == 0) 413159307Spjd return (CRYPTO_SHA1_HMAC); 414159307Spjd else if (strcasecmp("hmac/ripemd160", name) == 0) 415159307Spjd return (CRYPTO_RIPEMD160_HMAC); 416159307Spjd else if (strcasecmp("hmac/sha256", name) == 0) 417159307Spjd return (CRYPTO_SHA2_256_HMAC); 418159307Spjd else if (strcasecmp("hmac/sha384", name) == 0) 419159307Spjd return (CRYPTO_SHA2_384_HMAC); 420159307Spjd else if (strcasecmp("hmac/sha512", name) == 0) 421159307Spjd return (CRYPTO_SHA2_512_HMAC); 422159307Spjd return (CRYPTO_ALGORITHM_MIN - 1); 423159307Spjd} 424159307Spjd 425148456Spjdstatic __inline const char * 426148456Spjdg_eli_algo2str(u_int algo) 427148456Spjd{ 428148456Spjd 429148456Spjd switch (algo) { 430148456Spjd case CRYPTO_NULL_CBC: 431148456Spjd return ("NULL"); 432148456Spjd case CRYPTO_AES_CBC: 433159307Spjd return ("AES-CBC"); 434213070Spjd case CRYPTO_AES_XTS: 435213070Spjd return ("AES-XTS"); 436148456Spjd case CRYPTO_BLF_CBC: 437159307Spjd return ("Blowfish-CBC"); 438172031Spjd case CRYPTO_CAMELLIA_CBC: 439172031Spjd return ("CAMELLIA-CBC"); 440148456Spjd case CRYPTO_3DES_CBC: 441159307Spjd return ("3DES-CBC"); 442159307Spjd case CRYPTO_MD5_HMAC: 443159307Spjd return ("HMAC/MD5"); 444159307Spjd case CRYPTO_SHA1_HMAC: 445159307Spjd return ("HMAC/SHA1"); 446159307Spjd case CRYPTO_RIPEMD160_HMAC: 447159307Spjd return ("HMAC/RIPEMD160"); 448159307Spjd case CRYPTO_SHA2_256_HMAC: 449159307Spjd return ("HMAC/SHA256"); 450159307Spjd case CRYPTO_SHA2_384_HMAC: 451159307Spjd return ("HMAC/SHA384"); 452159307Spjd case CRYPTO_SHA2_512_HMAC: 453159307Spjd return ("HMAC/SHA512"); 454148456Spjd } 455148456Spjd return ("unknown"); 456148456Spjd} 457148456Spjd 458148456Spjdstatic __inline void 459148456Spjdeli_metadata_dump(const struct g_eli_metadata *md) 460148456Spjd{ 461148456Spjd static const char hex[] = "0123456789abcdef"; 462148456Spjd char str[sizeof(md->md_mkeys) * 2 + 1]; 463148456Spjd u_int i; 464148456Spjd 465148456Spjd printf(" magic: %s\n", md->md_magic); 466148456Spjd printf(" version: %u\n", (u_int)md->md_version); 467148456Spjd printf(" flags: 0x%x\n", (u_int)md->md_flags); 468159307Spjd printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo)); 469148456Spjd printf(" keylen: %u\n", (u_int)md->md_keylen); 470159307Spjd if (md->md_flags & G_ELI_FLAG_AUTH) 471159307Spjd printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo)); 472148456Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 473148456Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 474148456Spjd printf(" keys: 0x%02x\n", (u_int)md->md_keys); 475148456Spjd printf("iterations: %u\n", (u_int)md->md_iterations); 476148456Spjd bzero(str, sizeof(str)); 477148456Spjd for (i = 0; i < sizeof(md->md_salt); i++) { 478148456Spjd str[i * 2] = hex[md->md_salt[i] >> 4]; 479148456Spjd str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f]; 480148456Spjd } 481149303Spjd printf(" Salt: %s\n", str); 482148456Spjd bzero(str, sizeof(str)); 483148456Spjd for (i = 0; i < sizeof(md->md_mkeys); i++) { 484148456Spjd str[i * 2] = hex[md->md_mkeys[i] >> 4]; 485148456Spjd str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f]; 486148456Spjd } 487148456Spjd printf("Master Key: %s\n", str); 488148456Spjd bzero(str, sizeof(str)); 489148456Spjd for (i = 0; i < 16; i++) { 490148456Spjd str[i * 2] = hex[md->md_hash[i] >> 4]; 491148456Spjd str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 492148456Spjd } 493149303Spjd printf(" MD5 hash: %s\n", str); 494148456Spjd} 495148456Spjd 496148456Spjdstatic __inline u_int 497148456Spjdg_eli_keylen(u_int algo, u_int keylen) 498148456Spjd{ 499148456Spjd 500148456Spjd switch (algo) { 501148456Spjd case CRYPTO_NULL_CBC: 502148456Spjd if (keylen == 0) 503148456Spjd keylen = 64 * 8; 504148456Spjd else { 505148456Spjd if (keylen > 64 * 8) 506148456Spjd keylen = 0; 507148456Spjd } 508148456Spjd return (keylen); 509211927Spjd case CRYPTO_AES_CBC: 510172031Spjd case CRYPTO_CAMELLIA_CBC: 511148456Spjd switch (keylen) { 512148456Spjd case 0: 513148456Spjd return (128); 514148456Spjd case 128: 515148456Spjd case 192: 516148456Spjd case 256: 517148456Spjd return (keylen); 518148456Spjd default: 519148456Spjd return (0); 520148456Spjd } 521213070Spjd case CRYPTO_AES_XTS: 522213070Spjd switch (keylen) { 523213070Spjd case 0: 524213070Spjd return (128); 525213070Spjd case 128: 526213070Spjd case 256: 527213070Spjd return (keylen); 528213070Spjd default: 529213070Spjd return (0); 530213070Spjd } 531148456Spjd case CRYPTO_BLF_CBC: 532148456Spjd if (keylen == 0) 533148456Spjd return (128); 534148456Spjd if (keylen < 128 || keylen > 448) 535148456Spjd return (0); 536148456Spjd if ((keylen % 32) != 0) 537148456Spjd return (0); 538148456Spjd return (keylen); 539148456Spjd case CRYPTO_3DES_CBC: 540148456Spjd if (keylen == 0 || keylen == 192) 541148456Spjd return (192); 542148456Spjd return (0); 543148456Spjd default: 544148456Spjd return (0); 545148456Spjd } 546148456Spjd} 547148456Spjd 548159307Spjdstatic __inline u_int 549159307Spjdg_eli_hashlen(u_int algo) 550159307Spjd{ 551159307Spjd 552159307Spjd switch (algo) { 553159307Spjd case CRYPTO_MD5_HMAC: 554159307Spjd return (16); 555159307Spjd case CRYPTO_SHA1_HMAC: 556159307Spjd return (20); 557159307Spjd case CRYPTO_RIPEMD160_HMAC: 558159307Spjd return (20); 559159307Spjd case CRYPTO_SHA2_256_HMAC: 560159307Spjd return (32); 561159307Spjd case CRYPTO_SHA2_384_HMAC: 562159307Spjd return (48); 563159307Spjd case CRYPTO_SHA2_512_HMAC: 564159307Spjd return (64); 565159307Spjd } 566159307Spjd return (0); 567159307Spjd} 568159307Spjd 569148456Spjd#ifdef _KERNEL 570148456Spjdint g_eli_read_metadata(struct g_class *mp, struct g_provider *pp, 571148456Spjd struct g_eli_metadata *md); 572148456Spjdstruct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp, 573148456Spjd struct g_provider *bpp, const struct g_eli_metadata *md, 574148456Spjd const u_char *mkey, int nkey); 575148456Spjdint g_eli_destroy(struct g_eli_softc *sc, boolean_t force); 576148456Spjd 577148456Spjdint g_eli_access(struct g_provider *pp, int dr, int dw, int de); 578148456Spjdvoid g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb); 579159307Spjd 580159307Spjdvoid g_eli_read_done(struct bio *bp); 581159307Spjdvoid g_eli_write_done(struct bio *bp); 582159307Spjdint g_eli_crypto_rerun(struct cryptop *crp); 583159307Spjdvoid g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv, 584159307Spjd size_t size); 585159307Spjd 586214118Spjdvoid g_eli_crypto_read(struct g_eli_softc *sc, struct bio *bp, boolean_t fromworker); 587159307Spjdvoid g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp); 588159307Spjd 589159307Spjdvoid g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp); 590159307Spjdvoid g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp); 591148456Spjd#endif 592148456Spjd 593148456Spjdvoid g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key); 594148456Spjdint g_eli_mkey_decrypt(const struct g_eli_metadata *md, 595148456Spjd const unsigned char *key, unsigned char *mkey, unsigned *nkeyp); 596148456Spjdint g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen, 597148456Spjd unsigned char *mkey); 598159307Spjd#ifdef _KERNEL 599159307Spjdvoid g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey); 600159307Spjd#endif 601148456Spjd 602148456Spjdint g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize, 603148456Spjd const u_char *key, size_t keysize); 604148456Spjdint g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize, 605148456Spjd const u_char *key, size_t keysize); 606148456Spjd 607148456Spjdstruct hmac_ctx { 608148456Spjd SHA512_CTX shactx; 609148456Spjd u_char k_opad[128]; 610148456Spjd}; 611148456Spjd 612148456Spjdvoid g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey, 613148456Spjd size_t hkeylen); 614148456Spjdvoid g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data, 615148456Spjd size_t datasize); 616148456Spjdvoid g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize); 617148456Spjdvoid g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize, 618148456Spjd const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize); 619220922Spjd 620220922Spjd#ifdef _KERNEL 621220922Spjdvoid g_eli_key_init(struct g_eli_softc *sc); 622220922Spjdvoid g_eli_key_destroy(struct g_eli_softc *sc); 623220922Spjduint8_t *g_eli_key_hold(struct g_eli_softc *sc, off_t offset, size_t blocksize); 624220922Spjdvoid g_eli_key_drop(struct g_eli_softc *sc, uint8_t *rawkey); 625220922Spjd#endif 626148456Spjd#endif /* !_G_ELI_H_ */ 627