1/*-
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2 * Copyright (c) 2005 Pawel Jakub Dawidek
3 * Copyright (c) 2004 Mark R V Murray
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2 * Copyright (c) 2005-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> |
3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright
--- 8 unchanged lines hidden (view full) ---
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26
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28/* $OpenBSD: via.c,v 1.3 2004/06/15 23:36:55 deraadt Exp $ */
29/*-
30 * Copyright (c) 2003 Jason Wright
31 * Copyright (c) 2003, 2004 Theo de Raadt
32 * All rights reserved.
33 *
34 * Permission to use, copy, modify, and distribute this software for any
35 * purpose with or without fee is hereby granted, provided that the above
36 * copyright notice and this permission notice appear in all copies.
37 *
38 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
39 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
40 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
41 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
42 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
43 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
44 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
45 */
46
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27#include <sys/cdefs.h>
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48__FBSDID("$FreeBSD: head/sys/crypto/via/padlock.c 160573 2006-07-22 13:14:11Z pjd $");
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28__FBSDID("$FreeBSD: head/sys/crypto/via/padlock.c 160582 2006-07-22 16:18:47Z pjd $"); |
29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/module.h> 34#include <sys/lock.h> 35#include <sys/mutex.h> 36#include <sys/malloc.h> 37#include <sys/libkern.h> 38#if defined(__i386__) && !defined(PC98) 39#include <machine/cpufunc.h> 40#include <machine/cputypes.h> 41#include <machine/md_var.h> 42#include <machine/specialreg.h> 43#endif 44 45#include <opencrypto/cryptodev.h>
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66#include <opencrypto/cryptosoft.h> /* for hmac_ipad_buffer and hmac_opad_buffer */
67#include <opencrypto/xform.h>
68#include <crypto/rijndael/rijndael.h>
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46
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47#include <crypto/via/padlock.h> |
48
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71#define PADLOCK_ROUND_COUNT_AES128 10
72#define PADLOCK_ROUND_COUNT_AES192 12
73#define PADLOCK_ROUND_COUNT_AES256 14
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49/* 50 * Technical documentation about the PadLock engine can be found here: 51 * 52 * http://www.via.com.tw/en/downloads/whitepapers/initiatives/padlock/programming_guide.pdf 53 */ |
54
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75#define PADLOCK_ALGORITHM_TYPE_AES 0
76
77#define PADLOCK_KEY_GENERATION_HW 0
78#define PADLOCK_KEY_GENERATION_SW 1
79
80#define PADLOCK_DIRECTION_ENCRYPT 0
81#define PADLOCK_DIRECTION_DECRYPT 1
82
83#define PADLOCK_KEY_SIZE_128 0
84#define PADLOCK_KEY_SIZE_192 1
85#define PADLOCK_KEY_SIZE_256 2
86
87union padlock_cw {
88 uint64_t raw;
89 struct {
90 u_int round_count : 4;
91 u_int algorithm_type : 3;
92 u_int key_generation : 1;
93 u_int intermediate : 1;
94 u_int direction : 1;
95 u_int key_size : 2;
96 u_int filler0 : 20;
97 u_int filler1 : 32;
98 u_int filler2 : 32;
99 u_int filler3 : 32;
100 } __field;
101};
102#define cw_round_count __field.round_count
103#define cw_algorithm_type __field.algorithm_type
104#define cw_key_generation __field.key_generation
105#define cw_intermediate __field.intermediate
106#define cw_direction __field.direction
107#define cw_key_size __field.key_size
108#define cw_filler0 __field.filler0
109#define cw_filler1 __field.filler1
110#define cw_filler2 __field.filler2
111#define cw_filler3 __field.filler3
112
113struct padlock_session {
114 union padlock_cw ses_cw __aligned(16);
115 uint32_t ses_ekey[4 * (RIJNDAEL_MAXNR + 1) + 4] __aligned(16); /* 128 bit aligned */
116 uint32_t ses_dkey[4 * (RIJNDAEL_MAXNR + 1) + 4] __aligned(16); /* 128 bit aligned */
117 uint8_t ses_iv[16] __aligned(16); /* 128 bit aligned */
118 struct auth_hash *ses_axf;
119 uint8_t *ses_ictx;
120 uint8_t *ses_octx;
121 int ses_mlen;
122 int ses_used;
123 uint32_t ses_id;
124 TAILQ_ENTRY(padlock_session) ses_next;
125};
126
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55struct padlock_softc { 56 int32_t sc_cid; 57 uint32_t sc_sid; 58 TAILQ_HEAD(, padlock_session) sc_sessions; 59 struct mtx sc_sessions_mtx; 60}; 61 62static struct padlock_softc *padlock_sc; 63 64static int padlock_newsession(void *arg __unused, uint32_t *sidp, 65 struct cryptoini *cri); 66static int padlock_freesession(void *arg __unused, uint64_t tid); 67static int padlock_process(void *arg __unused, struct cryptop *crp, 68 int hint __unused); 69
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142static __inline void
143padlock_cbc(void *in, void *out, size_t count, void *key, union padlock_cw *cw,
144 void *iv)
145{
146#ifdef __GNUCLIKE_ASM
147 /* The .byte line is really VIA C3 "xcrypt-cbc" instruction */
148 __asm __volatile(
149 "pushf \n\t"
150 "popf \n\t"
151 "rep \n\t"
152 ".byte 0x0f, 0xa7, 0xd0"
153 : "+a" (iv), "+c" (count), "+D" (out), "+S" (in)
154 : "b" (key), "d" (cw)
155 : "cc", "memory"
156 );
157#endif
158}
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70MALLOC_DEFINE(M_PADLOCK, "padlock_data", "PadLock Data"); |
71 72static int 73padlock_init(void) 74{ 75 struct padlock_softc *sc;
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76 char capp[256]; 77 |
78#if defined(__i386__) && !defined(PC98)
|
79 /* If there is no AES support, we has nothing to do here. */ |
80 if (!(via_feature_xcrypt & VIA_HAS_AES)) {
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166 printf("PADLOCK: No ACE support.\n");
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81 printf("PadLock: No ACE support.\n"); |
82 return (EINVAL);
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168 } else
169 printf("PADLOCK: HW support loaded.\n");
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83 } 84 strlcpy(capp, "AES-CBC", sizeof(capp)); 85#if 0 86 strlcat(capp, ",AES-EBC", sizeof(capp)); 87 strlcat(capp, ",AES-CFB", sizeof(capp)); 88 strlcat(capp, ",AES-OFB", sizeof(capp)); 89#endif 90 if (via_feature_xcrypt & VIA_HAS_SHA) { 91 strlcat(capp, ",SHA1", sizeof(capp)); 92 strlcat(capp, ",SHA256", sizeof(capp)); 93 } 94#if 0 95 if (via_feature_xcrypt & VIA_HAS_AESCTR) 96 strlcat(capp, ",AES-CTR", sizeof(capp)); 97 if (via_feature_xcrypt & VIA_HAS_MM) 98 strlcat(capp, ",RSA", sizeof(capp)); 99#endif 100 printf("PadLock: HW support loaded for %s.\n", capp); |
101#else 102 return (EINVAL); 103#endif 104
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174 padlock_sc = sc = malloc(sizeof(*padlock_sc), M_DEVBUF,
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105 padlock_sc = sc = malloc(sizeof(*padlock_sc), M_PADLOCK, |
106 M_WAITOK | M_ZERO); 107 TAILQ_INIT(&sc->sc_sessions); 108 sc->sc_sid = 1; 109 110 sc->sc_cid = crypto_get_driverid(0); 111 if (sc->sc_cid < 0) {
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181 printf("PADLOCK: Could not get crypto driver id.\n");
182 free(padlock_sc, M_DEVBUF);
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112 printf("PadLock: Could not get crypto driver id.\n"); 113 free(padlock_sc, M_PADLOCK); |
114 padlock_sc = NULL; 115 return (ENOMEM); 116 } 117 118 mtx_init(&sc->sc_sessions_mtx, "padlock_mtx", NULL, MTX_DEF); 119 crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0, padlock_newsession, 120 padlock_freesession, padlock_process, NULL); 121 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0, padlock_newsession,
--- 22 unchanged lines hidden (view full) ---
144 return (0); 145 mtx_lock(&sc->sc_sessions_mtx); 146 TAILQ_FOREACH(ses, &sc->sc_sessions, ses_next) { 147 if (ses->ses_used) 148 active++; 149 } 150 if (active > 0) { 151 mtx_unlock(&sc->sc_sessions_mtx);
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221 printf("PADLOCK: Cannot destroy, %u sessions active.\n",
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152 printf("PadLock: Cannot destroy, %u sessions active.\n", |
153 active); 154 return (EBUSY); 155 } 156 padlock_sc = NULL; 157 for (ses = TAILQ_FIRST(&sc->sc_sessions); ses != NULL; 158 ses = TAILQ_FIRST(&sc->sc_sessions)) { 159 TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
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229 free(ses, M_DEVBUF);
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160 free(ses, M_PADLOCK); |
161 } 162 mtx_destroy(&sc->sc_sessions_mtx); 163 crypto_unregister_all(sc->sc_cid);
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233 free(sc, M_DEVBUF);
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164 free(sc, M_PADLOCK); |
165 return (0); 166} 167
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237static void
238padlock_setup_enckey(struct padlock_session *ses, caddr_t key, int klen)
239{
240 union padlock_cw *cw;
241 int i;
242
243 cw = &ses->ses_cw;
244 if (cw->cw_key_generation == PADLOCK_KEY_GENERATION_SW) {
245 /* Build expanded keys for both directions */
246 rijndaelKeySetupEnc(ses->ses_ekey, key, klen);
247 rijndaelKeySetupDec(ses->ses_dkey, key, klen);
248 for (i = 0; i < 4 * (RIJNDAEL_MAXNR + 1); i++) {
249 ses->ses_ekey[i] = ntohl(ses->ses_ekey[i]);
250 ses->ses_dkey[i] = ntohl(ses->ses_dkey[i]);
251 }
252 } else {
253 bcopy(key, ses->ses_ekey, klen);
254 bcopy(key, ses->ses_dkey, klen);
255 }
256}
257
258static void
259padlock_setup_mackey(struct padlock_session *ses, caddr_t key, int klen)
260{
261 struct auth_hash *axf;
262 int i;
263
264 klen /= 8;
265 axf = ses->ses_axf;
266
267 for (i = 0; i < klen; i++)
268 key[i] ^= HMAC_IPAD_VAL;
269
270 axf->Init(ses->ses_ictx);
271 axf->Update(ses->ses_ictx, key, klen);
272 axf->Update(ses->ses_ictx, hmac_ipad_buffer, axf->blocksize - klen);
273
274 for (i = 0; i < klen; i++)
275 key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL);
276
277 axf->Init(ses->ses_octx);
278 axf->Update(ses->ses_octx, key, klen);
279 axf->Update(ses->ses_octx, hmac_opad_buffer, axf->blocksize - klen);
280
281 for (i = 0; i < klen; i++)
282 key[i] ^= HMAC_OPAD_VAL;
283}
284
285/*
286 * Compute keyed-hash authenticator.
287 */
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168static int
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289padlock_authcompute(struct padlock_session *ses, struct cryptodesc *crd,
290 caddr_t buf, int flags)
291{
292 u_char hash[HASH_MAX_LEN];
293 struct auth_hash *axf;
294 union authctx ctx;
295 int error;
296
297 axf = ses->ses_axf;
298
299 bcopy(ses->ses_ictx, &ctx, axf->ctxsize);
300
301 error = crypto_apply(flags, buf, crd->crd_skip, crd->crd_len,
302 (int (*)(void *, void *, unsigned int))axf->Update, (caddr_t)&ctx);
303 if (error != 0)
304 return (error);
305
306 axf->Final(hash, &ctx);
307 bcopy(ses->ses_octx, &ctx, axf->ctxsize);
308 axf->Update(&ctx, hash, axf->hashsize);
309 axf->Final(hash, &ctx);
310
311 /* Inject the authentication data */
312 crypto_copyback(flags, buf, crd->crd_inject,
313 ses->ses_mlen == 0 ? axf->hashsize : ses->ses_mlen, hash);
314 return (0);
315}
316
317
318static int
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169padlock_newsession(void *arg __unused, uint32_t *sidp, struct cryptoini *cri) 170{ 171 struct padlock_softc *sc = padlock_sc; 172 struct padlock_session *ses = NULL; 173 struct cryptoini *encini, *macini;
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324 union padlock_cw *cw;
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174 int error; |
175 176 if (sc == NULL || sidp == NULL || cri == NULL) 177 return (EINVAL); 178 179 encini = macini = NULL; 180 for (; cri != NULL; cri = cri->cri_next) { 181 switch (cri->cri_alg) { 182 case CRYPTO_NULL_HMAC:
--- 19 unchanged lines hidden (view full) ---
202 203 /* 204 * We only support HMAC algorithms to be able to work with 205 * fast_ipsec(4), so if we are asked only for authentication without 206 * encryption, don't pretend we can accellerate it. 207 */ 208 if (encini == NULL) 209 return (EINVAL);
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360 if (encini->cri_klen != 128 && encini->cri_klen != 192 &&
361 encini->cri_klen != 256) {
362 return (EINVAL);
363 }
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210 211 /* 212 * Let's look for a free session structure. 213 */ 214 mtx_lock(&sc->sc_sessions_mtx); 215 /* 216 * Free sessions goes first, so if first session is used, we need to 217 * allocate one. 218 */ 219 ses = TAILQ_FIRST(&sc->sc_sessions); 220 if (ses == NULL || ses->ses_used) 221 ses = NULL; 222 else { 223 TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next); 224 ses->ses_used = 1; 225 TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next); 226 } 227 mtx_unlock(&sc->sc_sessions_mtx); 228 if (ses == NULL) {
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383 ses = malloc(sizeof(*ses), M_DEVBUF, M_NOWAIT | M_ZERO);
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229 ses = malloc(sizeof(*ses), M_PADLOCK, M_NOWAIT | M_ZERO); |
230 if (ses == NULL) 231 return (ENOMEM); 232 ses->ses_used = 1; 233 mtx_lock(&sc->sc_sessions_mtx); 234 ses->ses_id = sc->sc_sid++; 235 TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next); 236 mtx_unlock(&sc->sc_sessions_mtx); 237 } 238
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393 cw = &ses->ses_cw;
394 bzero(cw, sizeof(*cw));
395 cw->cw_algorithm_type = PADLOCK_ALGORITHM_TYPE_AES;
396 cw->cw_key_generation = PADLOCK_KEY_GENERATION_SW;
397 cw->cw_intermediate = 0;
398 switch (encini->cri_klen) {
399 case 128:
400 cw->cw_round_count = PADLOCK_ROUND_COUNT_AES128;
401 cw->cw_key_size = PADLOCK_KEY_SIZE_128;
402#ifdef HW_KEY_GENERATION
403 /* This doesn't buy us much, that's why it is commented out. */
404 cw->cw_key_generation = PADLOCK_KEY_GENERATION_HW;
405#endif
406 break;
407 case 192:
408 cw->cw_round_count = PADLOCK_ROUND_COUNT_AES192;
409 cw->cw_key_size = PADLOCK_KEY_SIZE_192;
410 break;
411 case 256:
412 cw->cw_round_count = PADLOCK_ROUND_COUNT_AES256;
413 cw->cw_key_size = PADLOCK_KEY_SIZE_256;
414 break;
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239 error = padlock_cipher_setup(ses, encini); 240 if (error != 0) { 241 padlock_freesession(NULL, ses->ses_id); 242 return (error); |
243 }
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416 if (encini->cri_key != NULL)
417 padlock_setup_enckey(ses, encini->cri_key, encini->cri_klen);
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244
|
419 arc4rand(ses->ses_iv, sizeof(ses->ses_iv), 0);
420
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245 if (macini != NULL) {
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422 ses->ses_mlen = macini->cri_mlen;
423
424 /* Find software structure which describes HMAC algorithm. */
425 switch (macini->cri_alg) {
426 case CRYPTO_NULL_HMAC:
427 ses->ses_axf = &auth_hash_null;
428 break;
429 case CRYPTO_MD5_HMAC:
430 ses->ses_axf = &auth_hash_hmac_md5;
431 break;
432 case CRYPTO_SHA1_HMAC:
433 ses->ses_axf = &auth_hash_hmac_sha1;
434 break;
435 case CRYPTO_RIPEMD160_HMAC:
436 ses->ses_axf = &auth_hash_hmac_ripemd_160;
437 break;
438 case CRYPTO_SHA2_256_HMAC:
439 ses->ses_axf = &auth_hash_hmac_sha2_256;
440 break;
441 case CRYPTO_SHA2_384_HMAC:
442 ses->ses_axf = &auth_hash_hmac_sha2_384;
443 break;
444 case CRYPTO_SHA2_512_HMAC:
445 ses->ses_axf = &auth_hash_hmac_sha2_512;
446 break;
447 }
448
449 /* Allocate memory for HMAC inner and outer contexts. */
450 ses->ses_ictx = malloc(ses->ses_axf->ctxsize, M_CRYPTO_DATA,
451 M_NOWAIT);
452 ses->ses_octx = malloc(ses->ses_axf->ctxsize, M_CRYPTO_DATA,
453 M_NOWAIT);
454 if (ses->ses_ictx == NULL || ses->ses_octx == NULL) {
|
246 error = padlock_hash_setup(ses, macini); 247 if (error != 0) { |
248 padlock_freesession(NULL, ses->ses_id);
|
456 return (ENOMEM);
|
249 return (error); |
250 }
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458
459 /* Setup key if given. */
460 if (macini->cri_key != NULL) {
461 padlock_setup_mackey(ses, macini->cri_key,
462 macini->cri_klen);
463 }
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251 } 252 253 *sidp = ses->ses_id; 254 return (0); 255} 256 257static int 258padlock_freesession(void *arg __unused, uint64_t tid)
--- 9 unchanged lines hidden (view full) ---
268 if (ses->ses_id == sid) 269 break; 270 } 271 if (ses == NULL) { 272 mtx_unlock(&sc->sc_sessions_mtx); 273 return (EINVAL); 274 } 275 TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
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489 if (ses->ses_ictx != NULL) {
490 bzero(ses->ses_ictx, ses->ses_axf->ctxsize);
491 free(ses->ses_ictx, M_CRYPTO_DATA);
492 ses->ses_ictx = NULL;
493 }
494 if (ses->ses_octx != NULL) {
495 bzero(ses->ses_ictx, ses->ses_axf->ctxsize);
496 free(ses->ses_octx, M_CRYPTO_DATA);
497 ses->ses_octx = NULL;
498 }
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276 padlock_hash_free(ses); |
277 bzero(ses, sizeof(*ses)); 278 ses->ses_used = 0; 279 TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next); 280 mtx_unlock(&sc->sc_sessions_mtx); 281 return (0); 282} 283 284static int 285padlock_process(void *arg __unused, struct cryptop *crp, int hint __unused) 286{ 287 struct padlock_softc *sc = padlock_sc;
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510 struct padlock_session *ses;
511 union padlock_cw *cw;
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288 struct padlock_session *ses = NULL; |
289 struct cryptodesc *crd, *enccrd, *maccrd;
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513 uint32_t *key;
514 u_char *buf, *abuf;
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290 int error = 0; 291 292 enccrd = maccrd = NULL;
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518 buf = NULL;
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293 294 if (crp == NULL || crp->crp_callback == NULL || crp->crp_desc == NULL) { 295 error = EINVAL; 296 goto out; 297 } 298 299 for (crd = crp->crp_desc; crd != NULL; crd = crd->crd_next) { 300 switch (crd->crd_alg) {
--- 32 unchanged lines hidden (view full) ---
333 break; 334 } 335 mtx_unlock(&sc->sc_sessions_mtx); 336 if (ses == NULL) { 337 error = EINVAL; 338 goto out; 339 } 340
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567 buf = malloc(enccrd->crd_len + 16, M_DEVBUF, M_NOWAIT);
568 if (buf == NULL) {
569 error = ENOMEM;
570 goto out;
571 }
572 /* Buffer has to be 16 bytes aligned. */
573 abuf = buf + 16 - ((uintptr_t)buf % 16);
574
575 if ((enccrd->crd_flags & CRD_F_KEY_EXPLICIT) != 0)
576 padlock_setup_enckey(ses, enccrd->crd_key, enccrd->crd_klen);
577 if (maccrd != NULL && (maccrd->crd_flags & CRD_F_KEY_EXPLICIT) != 0)
578 padlock_setup_mackey(ses, maccrd->crd_key, maccrd->crd_klen);
579
580 cw = &ses->ses_cw;
581 cw->cw_filler0 = 0;
582 cw->cw_filler1 = 0;
583 cw->cw_filler2 = 0;
584 cw->cw_filler3 = 0;
585 if ((enccrd->crd_flags & CRD_F_ENCRYPT) != 0) {
586 cw->cw_direction = PADLOCK_DIRECTION_ENCRYPT;
587 key = ses->ses_ekey;
588 if ((enccrd->crd_flags & CRD_F_IV_EXPLICIT) != 0)
589 bcopy(enccrd->crd_iv, ses->ses_iv, 16);
590
591 if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) {
592 crypto_copyback(crp->crp_flags, crp->crp_buf,
593 enccrd->crd_inject, AES_BLOCK_LEN, ses->ses_iv);
594 }
595 } else {
596 cw->cw_direction = PADLOCK_DIRECTION_DECRYPT;
597 key = ses->ses_dkey;
598 if ((enccrd->crd_flags & CRD_F_IV_EXPLICIT) != 0)
599 bcopy(enccrd->crd_iv, ses->ses_iv, AES_BLOCK_LEN);
600 else {
601 crypto_copydata(crp->crp_flags, crp->crp_buf,
602 enccrd->crd_inject, AES_BLOCK_LEN, ses->ses_iv);
603 }
604 }
605
|
341 /* Perform data authentication if requested before encryption. */ 342 if (maccrd != NULL && maccrd->crd_next == enccrd) {
|
608 error = padlock_authcompute(ses, maccrd, crp->crp_buf,
609 crp->crp_flags);
|
343 error = padlock_hash_process(ses, maccrd, crp); |
344 if (error != 0) 345 goto out; 346 } 347
|
614 crypto_copydata(crp->crp_flags, crp->crp_buf, enccrd->crd_skip,
615 enccrd->crd_len, abuf);
|
348 error = padlock_cipher_process(ses, enccrd, crp); 349 if (error != 0) 350 goto out; |
351
|
617 padlock_cbc(abuf, abuf, enccrd->crd_len / 16, key, cw, ses->ses_iv);
618
619 crypto_copyback(crp->crp_flags, crp->crp_buf, enccrd->crd_skip,
620 enccrd->crd_len, abuf);
621
|
352 /* Perform data authentication if requested after encryption. */ 353 if (maccrd != NULL && enccrd->crd_next == maccrd) {
|
624 error = padlock_authcompute(ses, maccrd, crp->crp_buf,
625 crp->crp_flags);
|
354 error = padlock_hash_process(ses, maccrd, crp); |
355 if (error != 0) 356 goto out; 357 } 358
|
630 /* copy out last block for use as next session IV */
631 if ((enccrd->crd_flags & CRD_F_ENCRYPT) != 0) {
632 crypto_copydata(crp->crp_flags, crp->crp_buf,
633 enccrd->crd_skip + enccrd->crd_len - AES_BLOCK_LEN,
634 AES_BLOCK_LEN, ses->ses_iv);
635 }
636
|
359out:
|
638 if (buf != NULL) {
639 bzero(buf, enccrd->crd_len + 16);
640 free(buf, M_DEVBUF);
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360#if 0 361 /* 362 * This code is not necessary, because contexts will be freed on next 363 * padlock_setup_mackey() call or at padlock_freesession() call. 364 */ 365 if (ses != NULL && maccrd != NULL && 366 (maccrd->crd_flags & CRD_F_KEY_EXPLICIT) != 0) { 367 padlock_free_ctx(ses->ses_axf, ses->ses_ictx); 368 padlock_free_ctx(ses->ses_axf, ses->ses_octx); |
369 }
|
370#endif |
371 crp->crp_etype = error; 372 crypto_done(crp); 373 return (error); 374} 375 376static int 377padlock_modevent(module_t mod, int type, void *unused __unused) 378{
--- 22 unchanged lines hidden --- |