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: stable/10/sys/geom/eli/g_eli.h 314327 2017-02-27 08:27:38Z avg $ 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> 35314327Savg#include <crypto/sha2/sha256.h> 36314327Savg#include <crypto/sha2/sha512.h> 37148456Spjd#include <opencrypto/cryptodev.h> 38148456Spjd#ifdef _KERNEL 39148456Spjd#include <sys/bio.h> 40148456Spjd#include <sys/libkern.h> 41220922Spjd#include <sys/lock.h> 42220922Spjd#include <sys/mutex.h> 43220922Spjd#include <sys/queue.h> 44220922Spjd#include <sys/tree.h> 45148456Spjd#include <geom/geom.h> 46148456Spjd#else 47226733Spjd#include <assert.h> 48148456Spjd#include <stdio.h> 49148456Spjd#include <string.h> 50148867Spjd#include <strings.h> 51148456Spjd#endif 52148456Spjd#ifndef _OpenSSL_ 53148456Spjd#include <sys/md5.h> 54148456Spjd#endif 55148456Spjd 56148456Spjd#define G_ELI_CLASS_NAME "ELI" 57148456Spjd#define G_ELI_MAGIC "GEOM::ELI" 58148456Spjd#define G_ELI_SUFFIX ".eli" 59148456Spjd 60148456Spjd/* 61148456Spjd * Version history: 62148456Spjd * 0 - Initial version number. 63159307Spjd * 1 - Added data authentication support (md_aalgo field and 64159307Spjd * G_ELI_FLAG_AUTH flag). 65161217Spjd * 2 - Added G_ELI_FLAG_READONLY. 66211927Spjd * 3 - Added 'configure' subcommand. 67211927Spjd * 4 - IV is generated from offset converted to little-endian 68221628Spjd * (the G_ELI_FLAG_NATIVE_BYTE_ORDER flag will be set for older versions). 69213070Spjd * 5 - Added multiple encrypton keys and AES-XTS support. 70221628Spjd * 6 - Fixed usage of multiple keys for authenticated providers (the 71221628Spjd * G_ELI_FLAG_FIRST_KEY flag will be set for older versions). 72238116Spjd * 7 - Encryption keys are now generated from the Data Key and not from the 73238116Spjd * IV Key (the G_ELI_FLAG_ENC_IVKEY flag will be set for older versions). 74148456Spjd */ 75221628Spjd#define G_ELI_VERSION_00 0 76221628Spjd#define G_ELI_VERSION_01 1 77221628Spjd#define G_ELI_VERSION_02 2 78221628Spjd#define G_ELI_VERSION_03 3 79221628Spjd#define G_ELI_VERSION_04 4 80221628Spjd#define G_ELI_VERSION_05 5 81221628Spjd#define G_ELI_VERSION_06 6 82238116Spjd#define G_ELI_VERSION_07 7 83238116Spjd#define G_ELI_VERSION G_ELI_VERSION_07 84148456Spjd 85161127Spjd/* ON DISK FLAGS. */ 86148456Spjd/* Use random, onetime keys. */ 87161220Spjd#define G_ELI_FLAG_ONETIME 0x00000001 88148456Spjd/* Ask for the passphrase from the kernel, before mounting root. */ 89161220Spjd#define G_ELI_FLAG_BOOT 0x00000002 90148456Spjd/* Detach on last close, if we were open for writing. */ 91161220Spjd#define G_ELI_FLAG_WO_DETACH 0x00000004 92148456Spjd/* Detach on last close. */ 93161220Spjd#define G_ELI_FLAG_RW_DETACH 0x00000008 94159307Spjd/* Provide data authentication. */ 95161220Spjd#define G_ELI_FLAG_AUTH 0x00000010 96161127Spjd/* Provider is read-only, we should deny all write attempts. */ 97161220Spjd#define G_ELI_FLAG_RO 0x00000020 98161127Spjd/* RUNTIME FLAGS. */ 99148456Spjd/* Provider was open for writing. */ 100161220Spjd#define G_ELI_FLAG_WOPEN 0x00010000 101148456Spjd/* Destroy device. */ 102161220Spjd#define G_ELI_FLAG_DESTROY 0x00020000 103161220Spjd/* Provider uses native byte-order for IV generation. */ 104161220Spjd#define G_ELI_FLAG_NATIVE_BYTE_ORDER 0x00040000 105213067Spjd/* Provider uses single encryption key. */ 106213067Spjd#define G_ELI_FLAG_SINGLE_KEY 0x00080000 107214118Spjd/* Device suspended. */ 108214118Spjd#define G_ELI_FLAG_SUSPEND 0x00100000 109221628Spjd/* Provider uses first encryption key. */ 110221628Spjd#define G_ELI_FLAG_FIRST_KEY 0x00200000 111238116Spjd/* Provider uses IV-Key for encryption key generation. */ 112238116Spjd#define G_ELI_FLAG_ENC_IVKEY 0x00400000 113148456Spjd 114214118Spjd#define G_ELI_NEW_BIO 255 115214118Spjd 116148456Spjd#define SHA512_MDLEN 64 117159307Spjd#define G_ELI_AUTH_SECKEYLEN SHA256_DIGEST_LENGTH 118148456Spjd 119148456Spjd#define G_ELI_MAXMKEYS 2 120148456Spjd#define G_ELI_MAXKEYLEN 64 121148456Spjd#define G_ELI_USERKEYLEN G_ELI_MAXKEYLEN 122148456Spjd#define G_ELI_DATAKEYLEN G_ELI_MAXKEYLEN 123159307Spjd#define G_ELI_AUTHKEYLEN G_ELI_MAXKEYLEN 124148456Spjd#define G_ELI_IVKEYLEN G_ELI_MAXKEYLEN 125148456Spjd#define G_ELI_SALTLEN 64 126148456Spjd#define G_ELI_DATAIVKEYLEN (G_ELI_DATAKEYLEN + G_ELI_IVKEYLEN) 127148456Spjd/* Data-Key, IV-Key, HMAC_SHA512(Derived-Key, Data-Key+IV-Key) */ 128148456Spjd#define G_ELI_MKEYLEN (G_ELI_DATAIVKEYLEN + SHA512_MDLEN) 129213062Spjd#define G_ELI_OVERWRITES 5 130213067Spjd/* Switch data encryption key every 2^20 blocks. */ 131213067Spjd#define G_ELI_KEY_SHIFT 20 132148456Spjd 133148456Spjd#ifdef _KERNEL 134213165Spjdextern int g_eli_debug; 135148456Spjdextern u_int g_eli_overwrites; 136159307Spjdextern u_int g_eli_batch; 137148456Spjd 138214163Spjd#define G_ELI_CRYPTO_UNKNOWN 0 139148456Spjd#define G_ELI_CRYPTO_HW 1 140148456Spjd#define G_ELI_CRYPTO_SW 2 141148456Spjd 142148456Spjd#define G_ELI_DEBUG(lvl, ...) do { \ 143148456Spjd if (g_eli_debug >= (lvl)) { \ 144148456Spjd printf("GEOM_ELI"); \ 145148456Spjd if (g_eli_debug > 0) \ 146148456Spjd printf("[%u]", lvl); \ 147148456Spjd printf(": "); \ 148148456Spjd printf(__VA_ARGS__); \ 149148456Spjd printf("\n"); \ 150148456Spjd } \ 151148456Spjd} while (0) 152148456Spjd#define G_ELI_LOGREQ(lvl, bp, ...) do { \ 153148456Spjd if (g_eli_debug >= (lvl)) { \ 154148456Spjd printf("GEOM_ELI"); \ 155148456Spjd if (g_eli_debug > 0) \ 156148456Spjd printf("[%u]", lvl); \ 157148456Spjd printf(": "); \ 158148456Spjd printf(__VA_ARGS__); \ 159148456Spjd printf(" "); \ 160148456Spjd g_print_bio(bp); \ 161148456Spjd printf("\n"); \ 162148456Spjd } \ 163148456Spjd} while (0) 164148456Spjd 165148456Spjdstruct g_eli_worker { 166148456Spjd struct g_eli_softc *w_softc; 167148456Spjd struct proc *w_proc; 168148456Spjd u_int w_number; 169148456Spjd uint64_t w_sid; 170214118Spjd boolean_t w_active; 171148456Spjd LIST_ENTRY(g_eli_worker) w_next; 172148456Spjd}; 173148456Spjd 174148456Spjdstruct g_eli_softc { 175220922Spjd struct g_geom *sc_geom; 176226733Spjd u_int sc_version; 177220922Spjd u_int sc_crypto; 178220922Spjd uint8_t sc_mkey[G_ELI_DATAIVKEYLEN]; 179220922Spjd uint8_t sc_ekey[G_ELI_DATAKEYLEN]; 180220922Spjd TAILQ_HEAD(, g_eli_key) sc_ekeys_queue; 181220922Spjd RB_HEAD(g_eli_key_tree, g_eli_key) sc_ekeys_tree; 182220922Spjd struct mtx sc_ekeys_lock; 183220922Spjd uint64_t sc_ekeys_total; 184220922Spjd uint64_t sc_ekeys_allocated; 185220922Spjd u_int sc_ealgo; 186220922Spjd u_int sc_ekeylen; 187220922Spjd uint8_t sc_akey[G_ELI_AUTHKEYLEN]; 188220922Spjd u_int sc_aalgo; 189220922Spjd u_int sc_akeylen; 190220922Spjd u_int sc_alen; 191220922Spjd SHA256_CTX sc_akeyctx; 192220922Spjd uint8_t sc_ivkey[G_ELI_IVKEYLEN]; 193220922Spjd SHA256_CTX sc_ivctx; 194220922Spjd int sc_nkey; 195220922Spjd uint32_t sc_flags; 196220922Spjd int sc_inflight; 197220922Spjd off_t sc_mediasize; 198220922Spjd size_t sc_sectorsize; 199220922Spjd u_int sc_bytes_per_sector; 200220922Spjd u_int sc_data_per_sector; 201226840Spjd boolean_t sc_cpubind; 202148456Spjd 203148456Spjd /* Only for software cryptography. */ 204148456Spjd struct bio_queue_head sc_queue; 205220922Spjd struct mtx sc_queue_mtx; 206148456Spjd LIST_HEAD(, g_eli_worker) sc_workers; 207148456Spjd}; 208148456Spjd#define sc_name sc_geom->name 209148456Spjd#endif /* _KERNEL */ 210148456Spjd 211148456Spjdstruct g_eli_metadata { 212148456Spjd char md_magic[16]; /* Magic value. */ 213148456Spjd uint32_t md_version; /* Version number. */ 214148456Spjd uint32_t md_flags; /* Additional flags. */ 215159307Spjd uint16_t md_ealgo; /* Encryption algorithm. */ 216148456Spjd uint16_t md_keylen; /* Key length. */ 217159307Spjd uint16_t md_aalgo; /* Authentication algorithm. */ 218148456Spjd uint64_t md_provsize; /* Provider's size. */ 219148456Spjd uint32_t md_sectorsize; /* Sector size. */ 220148456Spjd uint8_t md_keys; /* Available keys. */ 221149303Spjd int32_t md_iterations; /* Number of iterations for PKCS#5v2. */ 222148456Spjd uint8_t md_salt[G_ELI_SALTLEN]; /* Salt. */ 223148456Spjd /* Encrypted master key (IV-key, Data-key, HMAC). */ 224148456Spjd uint8_t md_mkeys[G_ELI_MAXMKEYS * G_ELI_MKEYLEN]; 225148456Spjd u_char md_hash[16]; /* MD5 hash. */ 226149323Spjd} __packed; 227148456Spjd#ifndef _OpenSSL_ 228148456Spjdstatic __inline void 229226733Spjdeli_metadata_encode_v0(struct g_eli_metadata *md, u_char **datap) 230148456Spjd{ 231148456Spjd u_char *p; 232148456Spjd 233226733Spjd p = *datap; 234148456Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 235159307Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 236148456Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 237226733Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 238226733Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 239226733Spjd *p = md->md_keys; p += sizeof(md->md_keys); 240226733Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 241226733Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 242226733Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 243226733Spjd *datap = p; 244226733Spjd} 245226733Spjdstatic __inline void 246238116Spjdeli_metadata_encode_v1v2v3v4v5v6v7(struct g_eli_metadata *md, u_char **datap) 247226733Spjd{ 248226733Spjd u_char *p; 249226733Spjd 250226733Spjd p = *datap; 251226733Spjd le32enc(p, md->md_flags); p += sizeof(md->md_flags); 252226733Spjd le16enc(p, md->md_ealgo); p += sizeof(md->md_ealgo); 253226733Spjd le16enc(p, md->md_keylen); p += sizeof(md->md_keylen); 254159307Spjd le16enc(p, md->md_aalgo); p += sizeof(md->md_aalgo); 255148456Spjd le64enc(p, md->md_provsize); p += sizeof(md->md_provsize); 256148456Spjd le32enc(p, md->md_sectorsize); p += sizeof(md->md_sectorsize); 257148456Spjd *p = md->md_keys; p += sizeof(md->md_keys); 258148456Spjd le32enc(p, md->md_iterations); p += sizeof(md->md_iterations); 259148456Spjd bcopy(md->md_salt, p, sizeof(md->md_salt)); p += sizeof(md->md_salt); 260148456Spjd bcopy(md->md_mkeys, p, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 261226733Spjd *datap = p; 262226733Spjd} 263226733Spjdstatic __inline void 264226733Spjdeli_metadata_encode(struct g_eli_metadata *md, u_char *data) 265226733Spjd{ 266226733Spjd MD5_CTX ctx; 267226733Spjd u_char *p; 268226733Spjd 269226733Spjd p = data; 270226733Spjd bcopy(md->md_magic, p, sizeof(md->md_magic)); 271226733Spjd p += sizeof(md->md_magic); 272226733Spjd le32enc(p, md->md_version); 273226733Spjd p += sizeof(md->md_version); 274226733Spjd switch (md->md_version) { 275226733Spjd case G_ELI_VERSION_00: 276226733Spjd eli_metadata_encode_v0(md, &p); 277226733Spjd break; 278226733Spjd case G_ELI_VERSION_01: 279226733Spjd case G_ELI_VERSION_02: 280226733Spjd case G_ELI_VERSION_03: 281226733Spjd case G_ELI_VERSION_04: 282226733Spjd case G_ELI_VERSION_05: 283226733Spjd case G_ELI_VERSION_06: 284238116Spjd case G_ELI_VERSION_07: 285238116Spjd eli_metadata_encode_v1v2v3v4v5v6v7(md, &p); 286226733Spjd break; 287226733Spjd default: 288226733Spjd#ifdef _KERNEL 289226733Spjd panic("%s: Unsupported version %u.", __func__, 290226733Spjd (u_int)md->md_version); 291226733Spjd#else 292226733Spjd assert(!"Unsupported metadata version."); 293226733Spjd#endif 294226733Spjd } 295148456Spjd MD5Init(&ctx); 296148456Spjd MD5Update(&ctx, data, p - data); 297157305Spjd MD5Final(md->md_hash, &ctx); 298148456Spjd bcopy(md->md_hash, p, sizeof(md->md_hash)); 299148456Spjd} 300148456Spjdstatic __inline int 301148456Spjdeli_metadata_decode_v0(const u_char *data, struct g_eli_metadata *md) 302148456Spjd{ 303148456Spjd MD5_CTX ctx; 304148456Spjd const u_char *p; 305148456Spjd 306148456Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 307148456Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 308159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 309148456Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 310148456Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 311148456Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 312148456Spjd md->md_keys = *p; p += sizeof(md->md_keys); 313148456Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 314148456Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 315148456Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 316148456Spjd MD5Init(&ctx); 317148456Spjd MD5Update(&ctx, data, p - data); 318157305Spjd MD5Final(md->md_hash, &ctx); 319148456Spjd if (bcmp(md->md_hash, p, 16) != 0) 320148456Spjd return (EINVAL); 321148456Spjd return (0); 322148456Spjd} 323212845Sbrian 324148456Spjdstatic __inline int 325238116Spjdeli_metadata_decode_v1v2v3v4v5v6v7(const u_char *data, struct g_eli_metadata *md) 326159307Spjd{ 327159307Spjd MD5_CTX ctx; 328159307Spjd const u_char *p; 329159307Spjd 330159307Spjd p = data + sizeof(md->md_magic) + sizeof(md->md_version); 331159307Spjd md->md_flags = le32dec(p); p += sizeof(md->md_flags); 332159307Spjd md->md_ealgo = le16dec(p); p += sizeof(md->md_ealgo); 333159307Spjd md->md_keylen = le16dec(p); p += sizeof(md->md_keylen); 334159307Spjd md->md_aalgo = le16dec(p); p += sizeof(md->md_aalgo); 335159307Spjd md->md_provsize = le64dec(p); p += sizeof(md->md_provsize); 336159307Spjd md->md_sectorsize = le32dec(p); p += sizeof(md->md_sectorsize); 337159307Spjd md->md_keys = *p; p += sizeof(md->md_keys); 338159307Spjd md->md_iterations = le32dec(p); p += sizeof(md->md_iterations); 339159307Spjd bcopy(p, md->md_salt, sizeof(md->md_salt)); p += sizeof(md->md_salt); 340159307Spjd bcopy(p, md->md_mkeys, sizeof(md->md_mkeys)); p += sizeof(md->md_mkeys); 341159307Spjd MD5Init(&ctx); 342159307Spjd MD5Update(&ctx, data, p - data); 343159307Spjd MD5Final(md->md_hash, &ctx); 344159307Spjd if (bcmp(md->md_hash, p, 16) != 0) 345159307Spjd return (EINVAL); 346159307Spjd return (0); 347159307Spjd} 348159307Spjdstatic __inline int 349148456Spjdeli_metadata_decode(const u_char *data, struct g_eli_metadata *md) 350148456Spjd{ 351148456Spjd int error; 352148456Spjd 353148456Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 354226730Spjd if (strcmp(md->md_magic, G_ELI_MAGIC) != 0) 355226730Spjd return (EINVAL); 356148456Spjd md->md_version = le32dec(data + sizeof(md->md_magic)); 357148456Spjd switch (md->md_version) { 358221629Spjd case G_ELI_VERSION_00: 359148456Spjd error = eli_metadata_decode_v0(data, md); 360148456Spjd break; 361221629Spjd case G_ELI_VERSION_01: 362221629Spjd case G_ELI_VERSION_02: 363221629Spjd case G_ELI_VERSION_03: 364221629Spjd case G_ELI_VERSION_04: 365221629Spjd case G_ELI_VERSION_05: 366221629Spjd case G_ELI_VERSION_06: 367238116Spjd case G_ELI_VERSION_07: 368238116Spjd error = eli_metadata_decode_v1v2v3v4v5v6v7(data, md); 369159307Spjd break; 370148456Spjd default: 371226721Spjd error = EOPNOTSUPP; 372148456Spjd break; 373148456Spjd } 374148456Spjd return (error); 375148456Spjd} 376148456Spjd#endif /* !_OpenSSL */ 377148456Spjd 378148456Spjdstatic __inline u_int 379159307Spjdg_eli_str2ealgo(const char *name) 380148456Spjd{ 381148456Spjd 382148867Spjd if (strcasecmp("null", name) == 0) 383148456Spjd return (CRYPTO_NULL_CBC); 384213070Spjd else if (strcasecmp("null-cbc", name) == 0) 385213070Spjd return (CRYPTO_NULL_CBC); 386148867Spjd else if (strcasecmp("aes", name) == 0) 387213070Spjd return (CRYPTO_AES_XTS); 388213070Spjd else if (strcasecmp("aes-cbc", name) == 0) 389148456Spjd return (CRYPTO_AES_CBC); 390213070Spjd else if (strcasecmp("aes-xts", name) == 0) 391213070Spjd return (CRYPTO_AES_XTS); 392148867Spjd else if (strcasecmp("blowfish", name) == 0) 393148456Spjd return (CRYPTO_BLF_CBC); 394213070Spjd else if (strcasecmp("blowfish-cbc", name) == 0) 395213070Spjd return (CRYPTO_BLF_CBC); 396172031Spjd else if (strcasecmp("camellia", name) == 0) 397172031Spjd return (CRYPTO_CAMELLIA_CBC); 398213070Spjd else if (strcasecmp("camellia-cbc", name) == 0) 399213070Spjd return (CRYPTO_CAMELLIA_CBC); 400148867Spjd else if (strcasecmp("3des", name) == 0) 401148456Spjd return (CRYPTO_3DES_CBC); 402213070Spjd else if (strcasecmp("3des-cbc", name) == 0) 403213070Spjd return (CRYPTO_3DES_CBC); 404148456Spjd return (CRYPTO_ALGORITHM_MIN - 1); 405148456Spjd} 406148456Spjd 407159307Spjdstatic __inline u_int 408159307Spjdg_eli_str2aalgo(const char *name) 409159307Spjd{ 410159307Spjd 411159307Spjd if (strcasecmp("hmac/md5", name) == 0) 412159307Spjd return (CRYPTO_MD5_HMAC); 413159307Spjd else if (strcasecmp("hmac/sha1", name) == 0) 414159307Spjd return (CRYPTO_SHA1_HMAC); 415159307Spjd else if (strcasecmp("hmac/ripemd160", name) == 0) 416159307Spjd return (CRYPTO_RIPEMD160_HMAC); 417159307Spjd else if (strcasecmp("hmac/sha256", name) == 0) 418159307Spjd return (CRYPTO_SHA2_256_HMAC); 419159307Spjd else if (strcasecmp("hmac/sha384", name) == 0) 420159307Spjd return (CRYPTO_SHA2_384_HMAC); 421159307Spjd else if (strcasecmp("hmac/sha512", name) == 0) 422159307Spjd return (CRYPTO_SHA2_512_HMAC); 423159307Spjd return (CRYPTO_ALGORITHM_MIN - 1); 424159307Spjd} 425159307Spjd 426148456Spjdstatic __inline const char * 427148456Spjdg_eli_algo2str(u_int algo) 428148456Spjd{ 429148456Spjd 430148456Spjd switch (algo) { 431148456Spjd case CRYPTO_NULL_CBC: 432148456Spjd return ("NULL"); 433148456Spjd case CRYPTO_AES_CBC: 434159307Spjd return ("AES-CBC"); 435213070Spjd case CRYPTO_AES_XTS: 436213070Spjd return ("AES-XTS"); 437148456Spjd case CRYPTO_BLF_CBC: 438159307Spjd return ("Blowfish-CBC"); 439172031Spjd case CRYPTO_CAMELLIA_CBC: 440172031Spjd return ("CAMELLIA-CBC"); 441148456Spjd case CRYPTO_3DES_CBC: 442159307Spjd return ("3DES-CBC"); 443159307Spjd case CRYPTO_MD5_HMAC: 444159307Spjd return ("HMAC/MD5"); 445159307Spjd case CRYPTO_SHA1_HMAC: 446159307Spjd return ("HMAC/SHA1"); 447159307Spjd case CRYPTO_RIPEMD160_HMAC: 448159307Spjd return ("HMAC/RIPEMD160"); 449159307Spjd case CRYPTO_SHA2_256_HMAC: 450159307Spjd return ("HMAC/SHA256"); 451159307Spjd case CRYPTO_SHA2_384_HMAC: 452159307Spjd return ("HMAC/SHA384"); 453159307Spjd case CRYPTO_SHA2_512_HMAC: 454159307Spjd return ("HMAC/SHA512"); 455148456Spjd } 456148456Spjd return ("unknown"); 457148456Spjd} 458148456Spjd 459148456Spjdstatic __inline void 460148456Spjdeli_metadata_dump(const struct g_eli_metadata *md) 461148456Spjd{ 462148456Spjd static const char hex[] = "0123456789abcdef"; 463148456Spjd char str[sizeof(md->md_mkeys) * 2 + 1]; 464148456Spjd u_int i; 465148456Spjd 466148456Spjd printf(" magic: %s\n", md->md_magic); 467148456Spjd printf(" version: %u\n", (u_int)md->md_version); 468148456Spjd printf(" flags: 0x%x\n", (u_int)md->md_flags); 469159307Spjd printf(" ealgo: %s\n", g_eli_algo2str(md->md_ealgo)); 470148456Spjd printf(" keylen: %u\n", (u_int)md->md_keylen); 471159307Spjd if (md->md_flags & G_ELI_FLAG_AUTH) 472159307Spjd printf(" aalgo: %s\n", g_eli_algo2str(md->md_aalgo)); 473148456Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 474148456Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 475148456Spjd printf(" keys: 0x%02x\n", (u_int)md->md_keys); 476148456Spjd printf("iterations: %u\n", (u_int)md->md_iterations); 477148456Spjd bzero(str, sizeof(str)); 478148456Spjd for (i = 0; i < sizeof(md->md_salt); i++) { 479148456Spjd str[i * 2] = hex[md->md_salt[i] >> 4]; 480148456Spjd str[i * 2 + 1] = hex[md->md_salt[i] & 0x0f]; 481148456Spjd } 482149303Spjd printf(" Salt: %s\n", str); 483148456Spjd bzero(str, sizeof(str)); 484148456Spjd for (i = 0; i < sizeof(md->md_mkeys); i++) { 485148456Spjd str[i * 2] = hex[md->md_mkeys[i] >> 4]; 486148456Spjd str[i * 2 + 1] = hex[md->md_mkeys[i] & 0x0f]; 487148456Spjd } 488148456Spjd printf("Master Key: %s\n", str); 489148456Spjd bzero(str, sizeof(str)); 490148456Spjd for (i = 0; i < 16; i++) { 491148456Spjd str[i * 2] = hex[md->md_hash[i] >> 4]; 492148456Spjd str[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 493148456Spjd } 494149303Spjd printf(" MD5 hash: %s\n", str); 495148456Spjd} 496148456Spjd 497148456Spjdstatic __inline u_int 498148456Spjdg_eli_keylen(u_int algo, u_int keylen) 499148456Spjd{ 500148456Spjd 501148456Spjd switch (algo) { 502148456Spjd case CRYPTO_NULL_CBC: 503148456Spjd if (keylen == 0) 504148456Spjd keylen = 64 * 8; 505148456Spjd else { 506148456Spjd if (keylen > 64 * 8) 507148456Spjd keylen = 0; 508148456Spjd } 509148456Spjd return (keylen); 510211927Spjd case CRYPTO_AES_CBC: 511172031Spjd case CRYPTO_CAMELLIA_CBC: 512148456Spjd switch (keylen) { 513148456Spjd case 0: 514148456Spjd return (128); 515148456Spjd case 128: 516148456Spjd case 192: 517148456Spjd case 256: 518148456Spjd return (keylen); 519148456Spjd default: 520148456Spjd return (0); 521148456Spjd } 522213070Spjd case CRYPTO_AES_XTS: 523213070Spjd switch (keylen) { 524213070Spjd case 0: 525213070Spjd return (128); 526213070Spjd case 128: 527213070Spjd case 256: 528213070Spjd return (keylen); 529213070Spjd default: 530213070Spjd return (0); 531213070Spjd } 532148456Spjd case CRYPTO_BLF_CBC: 533148456Spjd if (keylen == 0) 534148456Spjd return (128); 535148456Spjd if (keylen < 128 || keylen > 448) 536148456Spjd return (0); 537148456Spjd if ((keylen % 32) != 0) 538148456Spjd return (0); 539148456Spjd return (keylen); 540148456Spjd case CRYPTO_3DES_CBC: 541148456Spjd if (keylen == 0 || keylen == 192) 542148456Spjd return (192); 543148456Spjd return (0); 544148456Spjd default: 545148456Spjd return (0); 546148456Spjd } 547148456Spjd} 548148456Spjd 549159307Spjdstatic __inline u_int 550159307Spjdg_eli_hashlen(u_int algo) 551159307Spjd{ 552159307Spjd 553159307Spjd switch (algo) { 554159307Spjd case CRYPTO_MD5_HMAC: 555159307Spjd return (16); 556159307Spjd case CRYPTO_SHA1_HMAC: 557159307Spjd return (20); 558159307Spjd case CRYPTO_RIPEMD160_HMAC: 559159307Spjd return (20); 560159307Spjd case CRYPTO_SHA2_256_HMAC: 561159307Spjd return (32); 562159307Spjd case CRYPTO_SHA2_384_HMAC: 563159307Spjd return (48); 564159307Spjd case CRYPTO_SHA2_512_HMAC: 565159307Spjd return (64); 566159307Spjd } 567159307Spjd return (0); 568159307Spjd} 569159307Spjd 570148456Spjd#ifdef _KERNEL 571148456Spjdint g_eli_read_metadata(struct g_class *mp, struct g_provider *pp, 572148456Spjd struct g_eli_metadata *md); 573148456Spjdstruct g_geom *g_eli_create(struct gctl_req *req, struct g_class *mp, 574148456Spjd struct g_provider *bpp, const struct g_eli_metadata *md, 575148456Spjd const u_char *mkey, int nkey); 576148456Spjdint g_eli_destroy(struct g_eli_softc *sc, boolean_t force); 577148456Spjd 578148456Spjdint g_eli_access(struct g_provider *pp, int dr, int dw, int de); 579148456Spjdvoid g_eli_config(struct gctl_req *req, struct g_class *mp, const char *verb); 580159307Spjd 581159307Spjdvoid g_eli_read_done(struct bio *bp); 582159307Spjdvoid g_eli_write_done(struct bio *bp); 583159307Spjdint g_eli_crypto_rerun(struct cryptop *crp); 584159307Spjdvoid g_eli_crypto_ivgen(struct g_eli_softc *sc, off_t offset, u_char *iv, 585159307Spjd size_t size); 586159307Spjd 587214118Spjdvoid g_eli_crypto_read(struct g_eli_softc *sc, struct bio *bp, boolean_t fromworker); 588159307Spjdvoid g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp); 589159307Spjd 590159307Spjdvoid g_eli_auth_read(struct g_eli_softc *sc, struct bio *bp); 591159307Spjdvoid g_eli_auth_run(struct g_eli_worker *wr, struct bio *bp); 592148456Spjd#endif 593148456Spjd 594148456Spjdvoid g_eli_mkey_hmac(unsigned char *mkey, const unsigned char *key); 595148456Spjdint g_eli_mkey_decrypt(const struct g_eli_metadata *md, 596148456Spjd const unsigned char *key, unsigned char *mkey, unsigned *nkeyp); 597148456Spjdint g_eli_mkey_encrypt(unsigned algo, const unsigned char *key, unsigned keylen, 598148456Spjd unsigned char *mkey); 599159307Spjd#ifdef _KERNEL 600159307Spjdvoid g_eli_mkey_propagate(struct g_eli_softc *sc, const unsigned char *mkey); 601159307Spjd#endif 602148456Spjd 603148456Spjdint g_eli_crypto_encrypt(u_int algo, u_char *data, size_t datasize, 604148456Spjd const u_char *key, size_t keysize); 605148456Spjdint g_eli_crypto_decrypt(u_int algo, u_char *data, size_t datasize, 606148456Spjd const u_char *key, size_t keysize); 607148456Spjd 608148456Spjdstruct hmac_ctx { 609148456Spjd SHA512_CTX shactx; 610148456Spjd u_char k_opad[128]; 611148456Spjd}; 612148456Spjd 613148456Spjdvoid g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey, 614148456Spjd size_t hkeylen); 615148456Spjdvoid g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data, 616148456Spjd size_t datasize); 617148456Spjdvoid g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize); 618148456Spjdvoid g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize, 619148456Spjd const uint8_t *data, size_t datasize, uint8_t *md, size_t mdsize); 620220922Spjd 621220922Spjd#ifdef _KERNEL 622220922Spjdvoid g_eli_key_init(struct g_eli_softc *sc); 623220922Spjdvoid g_eli_key_destroy(struct g_eli_softc *sc); 624220922Spjduint8_t *g_eli_key_hold(struct g_eli_softc *sc, off_t offset, size_t blocksize); 625220922Spjdvoid g_eli_key_drop(struct g_eli_softc *sc, uint8_t *rawkey); 626220922Spjd#endif 627148456Spjd#endif /* !_G_ELI_H_ */ 628