cryptodev.h revision 111297
1/* $FreeBSD: head/sys/opencrypto/cryptodev.h 111297 2003-02-23 07:25:48Z sam $ */ 2/* $OpenBSD: cryptodev.h,v 1.31 2002/06/11 11:14:29 beck Exp $ */ 3 4/* 5 * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu) 6 * 7 * This code was written by Angelos D. Keromytis in Athens, Greece, in 8 * February 2000. Network Security Technologies Inc. (NSTI) kindly 9 * supported the development of this code. 10 * 11 * Copyright (c) 2000 Angelos D. Keromytis 12 * 13 * Permission to use, copy, and modify this software with or without fee 14 * is hereby granted, provided that this entire notice is included in 15 * all source code copies of any software which is or includes a copy or 16 * modification of this software. 17 * 18 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR 19 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY 20 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE 21 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR 22 * PURPOSE. 23 * 24 * Copyright (c) 2001 Theo de Raadt 25 * 26 * Redistribution and use in source and binary forms, with or without 27 * modification, are permitted provided that the following conditions 28 * are met: 29 * 30 * 1. Redistributions of source code must retain the above copyright 31 * notice, this list of conditions and the following disclaimer. 32 * 2. Redistributions in binary form must reproduce the above copyright 33 * notice, this list of conditions and the following disclaimer in the 34 * documentation and/or other materials provided with the distribution. 35 * 3. The name of the author may not be used to endorse or promote products 36 * derived from this software without specific prior written permission. 37 * 38 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 39 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 40 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 41 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 42 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 43 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 44 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 45 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 47 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 48 * 49 * Effort sponsored in part by the Defense Advanced Research Projects 50 * Agency (DARPA) and Air Force Research Laboratory, Air Force 51 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 52 * 53 */ 54 55#ifndef _CRYPTO_CRYPTO_H_ 56#define _CRYPTO_CRYPTO_H_ 57 58#include <sys/ioccom.h> 59 60/* Some initial values */ 61#define CRYPTO_DRIVERS_INITIAL 4 62#define CRYPTO_SW_SESSIONS 32 63 64/* HMAC values */ 65#define HMAC_BLOCK_LEN 64 66#define HMAC_IPAD_VAL 0x36 67#define HMAC_OPAD_VAL 0x5C 68 69/* Encryption algorithm block sizes */ 70#define DES_BLOCK_LEN 8 71#define DES3_BLOCK_LEN 8 72#define BLOWFISH_BLOCK_LEN 8 73#define SKIPJACK_BLOCK_LEN 8 74#define CAST128_BLOCK_LEN 8 75#define RIJNDAEL128_BLOCK_LEN 16 76#define EALG_MAX_BLOCK_LEN 16 /* Keep this updated */ 77 78/* Maximum hash algorithm result length */ 79#define AALG_MAX_RESULT_LEN 64 /* Keep this updated */ 80 81#define CRYPTO_ALGORITHM_MIN 1 82#define CRYPTO_DES_CBC 1 83#define CRYPTO_3DES_CBC 2 84#define CRYPTO_BLF_CBC 3 85#define CRYPTO_CAST_CBC 4 86#define CRYPTO_SKIPJACK_CBC 5 87#define CRYPTO_MD5_HMAC 6 88#define CRYPTO_SHA1_HMAC 7 89#define CRYPTO_RIPEMD160_HMAC 8 90#define CRYPTO_MD5_KPDK 9 91#define CRYPTO_SHA1_KPDK 10 92#define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */ 93#define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */ 94#define CRYPTO_ARC4 12 95#define CRYPTO_MD5 13 96#define CRYPTO_SHA1 14 97#define CRYPTO_SHA2_HMAC 15 98#define CRYPTO_NULL_HMAC 16 99#define CRYPTO_NULL_CBC 17 100#define CRYPTO_DEFLATE_COMP 18 /* Deflate compression algorithm */ 101#define CRYPTO_ALGORITHM_MAX 18 /* Keep updated - see below */ 102 103/* Algorithm flags */ 104#define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */ 105#define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */ 106#define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */ 107 108struct session_op { 109 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */ 110 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */ 111 112 u_int32_t keylen; /* cipher key */ 113 caddr_t key; 114 int mackeylen; /* mac key */ 115 caddr_t mackey; 116 117 u_int32_t ses; /* returns: session # */ 118}; 119 120struct crypt_op { 121 u_int32_t ses; 122 u_int16_t op; /* i.e. COP_ENCRYPT */ 123#define COP_ENCRYPT 1 124#define COP_DECRYPT 2 125 u_int16_t flags; 126#define COP_F_BATCH 0x0008 /* Batch op if possible */ 127 u_int len; 128 caddr_t src, dst; /* become iov[] inside kernel */ 129 caddr_t mac; /* must be big enough for chosen MAC */ 130 caddr_t iv; 131}; 132 133#define CRYPTO_MAX_MAC_LEN 20 134 135/* bignum parameter, in packed bytes, ... */ 136struct crparam { 137 caddr_t crp_p; 138 u_int crp_nbits; 139}; 140 141#define CRK_MAXPARAM 8 142 143struct crypt_kop { 144 u_int crk_op; /* ie. CRK_MOD_EXP or other */ 145 u_int crk_status; /* return status */ 146 u_short crk_iparams; /* # of input parameters */ 147 u_short crk_oparams; /* # of output parameters */ 148 u_int crk_pad1; 149 struct crparam crk_param[CRK_MAXPARAM]; 150}; 151#define CRK_ALGORITM_MIN 0 152#define CRK_MOD_EXP 0 153#define CRK_MOD_EXP_CRT 1 154#define CRK_DSA_SIGN 2 155#define CRK_DSA_VERIFY 3 156#define CRK_DH_COMPUTE_KEY 4 157#define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */ 158 159#define CRF_MOD_EXP (1 << CRK_MOD_EXP) 160#define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT) 161#define CRF_DSA_SIGN (1 << CRK_DSA_SIGN) 162#define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY) 163#define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY) 164 165/* 166 * done against open of /dev/crypto, to get a cloned descriptor. 167 * Please use F_SETFD against the cloned descriptor. 168 */ 169#define CRIOGET _IOWR('c', 100, u_int32_t) 170 171/* the following are done against the cloned descriptor */ 172#define CIOCGSESSION _IOWR('c', 101, struct session_op) 173#define CIOCFSESSION _IOW('c', 102, u_int32_t) 174#define CIOCCRYPT _IOWR('c', 103, struct crypt_op) 175#define CIOCKEY _IOWR('c', 104, struct crypt_kop) 176 177#define CIOCASYMFEAT _IOR('c', 105, u_int32_t) 178 179struct cryptotstat { 180 struct timespec acc; /* total accumulated time */ 181 struct timespec min; /* min time */ 182 struct timespec max; /* max time */ 183 u_int32_t count; /* number of observations */ 184}; 185 186struct cryptostats { 187 u_int32_t cs_ops; /* symmetric crypto ops submitted */ 188 u_int32_t cs_errs; /* symmetric crypto ops that failed */ 189 u_int32_t cs_kops; /* asymetric/key ops submitted */ 190 u_int32_t cs_kerrs; /* asymetric/key ops that failed */ 191 u_int32_t cs_intrs; /* crypto swi thread activations */ 192 u_int32_t cs_rets; /* crypto return thread activations */ 193 u_int32_t cs_blocks; /* symmetric op driver block */ 194 u_int32_t cs_kblocks; /* symmetric op driver block */ 195 /* 196 * When CRYPTO_TIMING is defined at compile time and the 197 * sysctl debug.crypto is set to 1, the crypto system will 198 * accumulate statistics about how long it takes to process 199 * crypto requests at various points during processing. 200 */ 201 struct cryptotstat cs_invoke; /* crypto_dipsatch -> crypto_invoke */ 202 struct cryptotstat cs_done; /* crypto_invoke -> crypto_done */ 203 struct cryptotstat cs_cb; /* crypto_done -> callback */ 204 struct cryptotstat cs_finis; /* callback -> callback return */ 205}; 206 207#ifdef _KERNEL 208/* Standard initialization structure beginning */ 209struct cryptoini { 210 int cri_alg; /* Algorithm to use */ 211 int cri_klen; /* Key length, in bits */ 212 int cri_rnd; /* Algorithm rounds, where relevant */ 213 caddr_t cri_key; /* key to use */ 214 u_int8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */ 215 struct cryptoini *cri_next; 216}; 217 218/* Describe boundaries of a single crypto operation */ 219struct cryptodesc { 220 int crd_skip; /* How many bytes to ignore from start */ 221 int crd_len; /* How many bytes to process */ 222 int crd_inject; /* Where to inject results, if applicable */ 223 int crd_flags; 224 225#define CRD_F_ENCRYPT 0x01 /* Set when doing encryption */ 226#define CRD_F_IV_PRESENT 0x02 /* When encrypting, IV is already in 227 place, so don't copy. */ 228#define CRD_F_IV_EXPLICIT 0x04 /* IV explicitly provided */ 229#define CRD_F_DSA_SHA_NEEDED 0x08 /* Compute SHA-1 of buffer for DSA */ 230#define CRD_F_COMP 0x0f /* Set when doing compression */ 231 232 struct cryptoini CRD_INI; /* Initialization/context data */ 233#define crd_iv CRD_INI.cri_iv 234#define crd_key CRD_INI.cri_key 235#define crd_rnd CRD_INI.cri_rnd 236#define crd_alg CRD_INI.cri_alg 237#define crd_klen CRD_INI.cri_klen 238 239 struct cryptodesc *crd_next; 240}; 241 242/* Structure describing complete operation */ 243struct cryptop { 244 TAILQ_ENTRY(cryptop) crp_next; 245 246 u_int64_t crp_sid; /* Session ID */ 247 int crp_ilen; /* Input data total length */ 248 int crp_olen; /* Result total length */ 249 250 int crp_etype; /* 251 * Error type (zero means no error). 252 * All error codes except EAGAIN 253 * indicate possible data corruption (as in, 254 * the data have been touched). On all 255 * errors, the crp_sid may have changed 256 * (reset to a new one), so the caller 257 * should always check and use the new 258 * value on future requests. 259 */ 260 int crp_flags; 261 262#define CRYPTO_F_IMBUF 0x0001 /* Input/output are mbuf chains, otherwise contig */ 263#define CRYPTO_F_IOV 0x0002 /* Input/output are uio */ 264#define CRYPTO_F_REL 0x0004 /* Must return data in same place */ 265#define CRYPTO_F_BATCH 0x0008 /* Batch op if possible */ 266#define CRYPTO_F_CBIMM 0x0010 /* Do callback immediately */ 267 268 caddr_t crp_buf; /* Data to be processed */ 269 caddr_t crp_opaque; /* Opaque pointer, passed along */ 270 struct cryptodesc *crp_desc; /* Linked list of processing descriptors */ 271 272 int (*crp_callback)(struct cryptop *); /* Callback function */ 273 274 caddr_t crp_mac; 275 struct bintime crp_tstamp; /* performance time stamp */ 276}; 277 278#define CRYPTO_BUF_CONTIG 0x0 279#define CRYPTO_BUF_IOV 0x1 280#define CRYPTO_BUF_MBUF 0x2 281 282#define CRYPTO_OP_DECRYPT 0x0 283#define CRYPTO_OP_ENCRYPT 0x1 284 285/* 286 * Hints passed to process methods. 287 */ 288#define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */ 289 290struct cryptkop { 291 TAILQ_ENTRY(cryptkop) krp_next; 292 293 u_int krp_op; /* ie. CRK_MOD_EXP or other */ 294 u_int krp_status; /* return status */ 295 u_short krp_iparams; /* # of input parameters */ 296 u_short krp_oparams; /* # of output parameters */ 297 u_int32_t krp_hid; 298 struct crparam krp_param[CRK_MAXPARAM]; /* kvm */ 299 int (*krp_callback)(struct cryptkop *); 300}; 301 302/* Crypto capabilities structure */ 303struct cryptocap { 304 u_int32_t cc_sessions; 305 306 /* 307 * Largest possible operator length (in bits) for each type of 308 * encryption algorithm. 309 */ 310 u_int16_t cc_max_op_len[CRYPTO_ALGORITHM_MAX + 1]; 311 312 u_int8_t cc_alg[CRYPTO_ALGORITHM_MAX + 1]; 313 314 u_int8_t cc_kalg[CRK_ALGORITHM_MAX + 1]; 315 316 u_int8_t cc_flags; 317 u_int8_t cc_qblocked; /* symmetric q blocked */ 318 u_int8_t cc_kqblocked; /* asymmetric q blocked */ 319#define CRYPTOCAP_F_CLEANUP 0x1 320#define CRYPTOCAP_F_SOFTWARE 0x02 321 322 void *cc_arg; /* callback argument */ 323 int (*cc_newsession)(void*, u_int32_t*, struct cryptoini*); 324 int (*cc_process)(void*, struct cryptop *, int); 325 int (*cc_freesession)(void*, u_int64_t); 326 void *cc_karg; /* callback argument */ 327 int (*cc_kprocess) (void*, struct cryptkop *, int); 328}; 329 330MALLOC_DECLARE(M_CRYPTO_DATA); 331 332extern int crypto_newsession(u_int64_t *sid, struct cryptoini *cri, int hard); 333extern int crypto_freesession(u_int64_t sid); 334extern int32_t crypto_get_driverid(u_int32_t flags); 335extern int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen, 336 u_int32_t flags, 337 int (*newses)(void*, u_int32_t*, struct cryptoini*), 338 int (*freeses)(void*, u_int64_t), 339 int (*process)(void*, struct cryptop *, int), 340 void *arg); 341extern int crypto_kregister(u_int32_t, int, u_int32_t, 342 int (*)(void*, struct cryptkop *, int), 343 void *arg); 344extern int crypto_unregister(u_int32_t driverid, int alg); 345extern int crypto_unregister_all(u_int32_t driverid); 346extern int crypto_dispatch(struct cryptop *crp); 347extern int crypto_kdispatch(struct cryptkop *); 348#define CRYPTO_SYMQ 0x1 349#define CRYPTO_ASYMQ 0x2 350extern int crypto_unblock(u_int32_t, int); 351extern void crypto_done(struct cryptop *crp); 352extern void crypto_kdone(struct cryptkop *); 353extern int crypto_getfeat(int *); 354 355extern void crypto_freereq(struct cryptop *crp); 356extern struct cryptop *crypto_getreq(int num); 357 358extern int crypto_usercrypto; /* userland may do crypto requests */ 359extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */ 360extern int crypto_devallowsoft; /* only use hardware crypto */ 361 362/* 363 * Crypto-related utility routines used mainly by drivers. 364 * 365 * XXX these don't really belong here; but for now they're 366 * kept apart from the rest of the system. 367 */ 368struct mbuf; 369struct mbuf *m_getptr(struct mbuf *, int, int *); 370 371struct uio; 372extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp); 373extern void cuio_copyback(struct uio* uio, int off, int len, caddr_t cp); 374extern struct iovec *cuio_getptr(struct uio *uio, int loc, int *off); 375#endif /* _KERNEL */ 376#endif /* _CRYPTO_CRYPTO_H_ */ 377