cryptodev.c revision 1.20 1 1.20 christos /* $NetBSD: cryptodev.c,v 1.20 2006/04/04 17:30:20 christos Exp $ */
2 1.4 jonathan /* $FreeBSD: src/sys/opencrypto/cryptodev.c,v 1.4.2.4 2003/06/03 00:09:02 sam Exp $ */
3 1.1 jonathan /* $OpenBSD: cryptodev.c,v 1.53 2002/07/10 22:21:30 mickey Exp $ */
4 1.1 jonathan
5 1.1 jonathan /*
6 1.1 jonathan * Copyright (c) 2001 Theo de Raadt
7 1.1 jonathan *
8 1.1 jonathan * Redistribution and use in source and binary forms, with or without
9 1.1 jonathan * modification, are permitted provided that the following conditions
10 1.1 jonathan * are met:
11 1.1 jonathan *
12 1.1 jonathan * 1. Redistributions of source code must retain the above copyright
13 1.1 jonathan * notice, this list of conditions and the following disclaimer.
14 1.1 jonathan * 2. Redistributions in binary form must reproduce the above copyright
15 1.1 jonathan * notice, this list of conditions and the following disclaimer in the
16 1.1 jonathan * documentation and/or other materials provided with the distribution.
17 1.1 jonathan * 3. The name of the author may not be used to endorse or promote products
18 1.1 jonathan * derived from this software without specific prior written permission.
19 1.1 jonathan *
20 1.1 jonathan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 1.1 jonathan * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 1.1 jonathan * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 1.1 jonathan * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 1.1 jonathan * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 1.1 jonathan * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 1.1 jonathan * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 1.1 jonathan * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 1.1 jonathan * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 1.1 jonathan * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 1.1 jonathan *
31 1.1 jonathan * Effort sponsored in part by the Defense Advanced Research Projects
32 1.1 jonathan * Agency (DARPA) and Air Force Research Laboratory, Air Force
33 1.1 jonathan * Materiel Command, USAF, under agreement number F30602-01-2-0537.
34 1.1 jonathan *
35 1.1 jonathan */
36 1.1 jonathan
37 1.1 jonathan #include <sys/cdefs.h>
38 1.20 christos __KERNEL_RCSID(0, "$NetBSD: cryptodev.c,v 1.20 2006/04/04 17:30:20 christos Exp $");
39 1.1 jonathan
40 1.1 jonathan #include <sys/param.h>
41 1.1 jonathan #include <sys/systm.h>
42 1.1 jonathan #include <sys/malloc.h>
43 1.1 jonathan #include <sys/mbuf.h>
44 1.1 jonathan #include <sys/sysctl.h>
45 1.1 jonathan #include <sys/file.h>
46 1.1 jonathan #include <sys/filedesc.h>
47 1.1 jonathan #include <sys/errno.h>
48 1.2 jonathan #include <sys/md5.h>
49 1.1 jonathan #include <sys/sha1.h>
50 1.1 jonathan #include <sys/conf.h>
51 1.1 jonathan #include <sys/device.h>
52 1.1 jonathan
53 1.1 jonathan #include <opencrypto/cryptodev.h>
54 1.1 jonathan #include <opencrypto/xform.h>
55 1.1 jonathan
56 1.1 jonathan #ifdef __NetBSD__
57 1.1 jonathan #define splcrypto splnet
58 1.1 jonathan #endif
59 1.18 christos #ifdef CRYPTO_DEBUG
60 1.18 christos #define DPRINTF(a) uprintf a
61 1.18 christos #else
62 1.18 christos #define DPRINTF(a)
63 1.18 christos #endif
64 1.1 jonathan
65 1.1 jonathan struct csession {
66 1.1 jonathan TAILQ_ENTRY(csession) next;
67 1.1 jonathan u_int64_t sid;
68 1.1 jonathan u_int32_t ses;
69 1.1 jonathan
70 1.1 jonathan u_int32_t cipher;
71 1.1 jonathan struct enc_xform *txform;
72 1.1 jonathan u_int32_t mac;
73 1.1 jonathan struct auth_hash *thash;
74 1.1 jonathan
75 1.1 jonathan caddr_t key;
76 1.1 jonathan int keylen;
77 1.1 jonathan u_char tmp_iv[EALG_MAX_BLOCK_LEN];
78 1.1 jonathan
79 1.1 jonathan caddr_t mackey;
80 1.1 jonathan int mackeylen;
81 1.1 jonathan u_char tmp_mac[CRYPTO_MAX_MAC_LEN];
82 1.1 jonathan
83 1.1 jonathan struct iovec iovec[IOV_MAX];
84 1.1 jonathan struct uio uio;
85 1.1 jonathan int error;
86 1.1 jonathan };
87 1.1 jonathan
88 1.1 jonathan struct fcrypt {
89 1.1 jonathan TAILQ_HEAD(csessionlist, csession) csessions;
90 1.1 jonathan int sesn;
91 1.1 jonathan };
92 1.1 jonathan
93 1.1 jonathan
94 1.1 jonathan /* Declaration of master device (fd-cloning/ctxt-allocating) entrypoints */
95 1.16 christos static int cryptoopen(dev_t dev, int flag, int mode, struct lwp *l);
96 1.1 jonathan static int cryptoread(dev_t dev, struct uio *uio, int ioflag);
97 1.1 jonathan static int cryptowrite(dev_t dev, struct uio *uio, int ioflag);
98 1.16 christos static int cryptoioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct lwp *l);
99 1.16 christos static int cryptoselect(dev_t dev, int rw, struct lwp *l);
100 1.1 jonathan
101 1.1 jonathan /* Declaration of cloned-device (per-ctxt) entrypoints */
102 1.1 jonathan static int cryptof_read(struct file *, off_t *, struct uio *, struct ucred *, int);
103 1.1 jonathan static int cryptof_write(struct file *, off_t *, struct uio *, struct ucred *, int);
104 1.16 christos static int cryptof_ioctl(struct file *, u_long, void*, struct lwp *l);
105 1.16 christos static int cryptof_close(struct file *, struct lwp *);
106 1.1 jonathan
107 1.12 christos static const struct fileops cryptofops = {
108 1.1 jonathan cryptof_read,
109 1.1 jonathan cryptof_write,
110 1.1 jonathan cryptof_ioctl,
111 1.12 christos fnullop_fcntl,
112 1.12 christos fnullop_poll,
113 1.12 christos fbadop_stat,
114 1.1 jonathan cryptof_close,
115 1.12 christos fnullop_kqfilter
116 1.1 jonathan };
117 1.1 jonathan
118 1.1 jonathan static struct csession *csefind(struct fcrypt *, u_int);
119 1.1 jonathan static int csedelete(struct fcrypt *, struct csession *);
120 1.1 jonathan static struct csession *cseadd(struct fcrypt *, struct csession *);
121 1.1 jonathan static struct csession *csecreate(struct fcrypt *, u_int64_t, caddr_t, u_int64_t,
122 1.1 jonathan caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *,
123 1.1 jonathan struct auth_hash *);
124 1.1 jonathan static int csefree(struct csession *);
125 1.1 jonathan
126 1.16 christos static int cryptodev_op(struct csession *, struct crypt_op *, struct lwp *);
127 1.1 jonathan static int cryptodev_key(struct crypt_kop *);
128 1.1 jonathan int cryptodev_dokey(struct crypt_kop *kop, struct crparam kvp[]);
129 1.1 jonathan
130 1.1 jonathan static int cryptodev_cb(void *);
131 1.1 jonathan static int cryptodevkey_cb(void *);
132 1.1 jonathan
133 1.9 jonathan /*
134 1.9 jonathan * sysctl-able control variables for /dev/crypto now defined in crypto.c:
135 1.9 jonathan * crypto_usercrypto, crypto_userasmcrypto, crypto_devallowsoft.
136 1.9 jonathan */
137 1.1 jonathan
138 1.1 jonathan /* ARGSUSED */
139 1.1 jonathan int
140 1.1 jonathan cryptof_read(struct file *fp, off_t *poff, struct uio *uio,
141 1.1 jonathan struct ucred *cred, int flags)
142 1.1 jonathan {
143 1.1 jonathan return (EIO);
144 1.1 jonathan }
145 1.1 jonathan
146 1.1 jonathan /* ARGSUSED */
147 1.1 jonathan int
148 1.1 jonathan cryptof_write(struct file *fp, off_t *poff, struct uio *uio,
149 1.1 jonathan struct ucred *cred, int flags)
150 1.1 jonathan {
151 1.1 jonathan return (EIO);
152 1.1 jonathan }
153 1.1 jonathan
154 1.1 jonathan /* ARGSUSED */
155 1.1 jonathan int
156 1.16 christos cryptof_ioctl(struct file *fp, u_long cmd, void* data, struct lwp *l)
157 1.1 jonathan {
158 1.1 jonathan struct cryptoini cria, crie;
159 1.1 jonathan struct fcrypt *fcr = (struct fcrypt *)fp->f_data;
160 1.1 jonathan struct csession *cse;
161 1.1 jonathan struct session_op *sop;
162 1.1 jonathan struct crypt_op *cop;
163 1.1 jonathan struct enc_xform *txform = NULL;
164 1.1 jonathan struct auth_hash *thash = NULL;
165 1.1 jonathan u_int64_t sid;
166 1.1 jonathan u_int32_t ses;
167 1.1 jonathan int error = 0;
168 1.1 jonathan
169 1.1 jonathan switch (cmd) {
170 1.1 jonathan case CIOCGSESSION:
171 1.1 jonathan sop = (struct session_op *)data;
172 1.1 jonathan switch (sop->cipher) {
173 1.1 jonathan case 0:
174 1.1 jonathan break;
175 1.1 jonathan case CRYPTO_DES_CBC:
176 1.1 jonathan txform = &enc_xform_des;
177 1.1 jonathan break;
178 1.1 jonathan case CRYPTO_3DES_CBC:
179 1.1 jonathan txform = &enc_xform_3des;
180 1.1 jonathan break;
181 1.1 jonathan case CRYPTO_BLF_CBC:
182 1.1 jonathan txform = &enc_xform_blf;
183 1.1 jonathan break;
184 1.1 jonathan case CRYPTO_CAST_CBC:
185 1.1 jonathan txform = &enc_xform_cast5;
186 1.1 jonathan break;
187 1.1 jonathan case CRYPTO_SKIPJACK_CBC:
188 1.1 jonathan txform = &enc_xform_skipjack;
189 1.1 jonathan break;
190 1.1 jonathan case CRYPTO_AES_CBC:
191 1.1 jonathan txform = &enc_xform_rijndael128;
192 1.1 jonathan break;
193 1.1 jonathan case CRYPTO_NULL_CBC:
194 1.1 jonathan txform = &enc_xform_null;
195 1.1 jonathan break;
196 1.1 jonathan case CRYPTO_ARC4:
197 1.1 jonathan txform = &enc_xform_arc4;
198 1.1 jonathan break;
199 1.1 jonathan default:
200 1.18 christos DPRINTF(("Invalid cipher %d\n", sop->cipher));
201 1.1 jonathan return (EINVAL);
202 1.1 jonathan }
203 1.1 jonathan
204 1.1 jonathan switch (sop->mac) {
205 1.1 jonathan case 0:
206 1.1 jonathan break;
207 1.1 jonathan case CRYPTO_MD5_HMAC:
208 1.1 jonathan thash = &auth_hash_hmac_md5_96;
209 1.1 jonathan break;
210 1.1 jonathan case CRYPTO_SHA1_HMAC:
211 1.1 jonathan thash = &auth_hash_hmac_sha1_96;
212 1.1 jonathan break;
213 1.1 jonathan case CRYPTO_SHA2_HMAC:
214 1.1 jonathan if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize)
215 1.1 jonathan thash = &auth_hash_hmac_sha2_256;
216 1.1 jonathan else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize)
217 1.1 jonathan thash = &auth_hash_hmac_sha2_384;
218 1.1 jonathan else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize)
219 1.1 jonathan thash = &auth_hash_hmac_sha2_512;
220 1.18 christos else {
221 1.18 christos DPRINTF(("Invalid mackeylen %d\n",
222 1.18 christos sop->mackeylen));
223 1.1 jonathan return (EINVAL);
224 1.18 christos }
225 1.1 jonathan break;
226 1.1 jonathan case CRYPTO_RIPEMD160_HMAC:
227 1.1 jonathan thash = &auth_hash_hmac_ripemd_160_96;
228 1.1 jonathan break;
229 1.1 jonathan case CRYPTO_MD5:
230 1.1 jonathan thash = &auth_hash_md5;
231 1.1 jonathan break;
232 1.1 jonathan case CRYPTO_SHA1:
233 1.1 jonathan thash = &auth_hash_sha1;
234 1.1 jonathan break;
235 1.1 jonathan case CRYPTO_NULL_HMAC:
236 1.1 jonathan thash = &auth_hash_null;
237 1.1 jonathan break;
238 1.1 jonathan default:
239 1.18 christos DPRINTF(("Invalid mac %d\n", sop->mac));
240 1.1 jonathan return (EINVAL);
241 1.1 jonathan }
242 1.1 jonathan
243 1.1 jonathan bzero(&crie, sizeof(crie));
244 1.1 jonathan bzero(&cria, sizeof(cria));
245 1.1 jonathan
246 1.1 jonathan if (txform) {
247 1.1 jonathan crie.cri_alg = txform->type;
248 1.1 jonathan crie.cri_klen = sop->keylen * 8;
249 1.1 jonathan if (sop->keylen > txform->maxkey ||
250 1.1 jonathan sop->keylen < txform->minkey) {
251 1.18 christos DPRINTF(("keylen %d not in [%d,%d]\n",
252 1.18 christos sop->keylen, txform->minkey,
253 1.18 christos txform->maxkey));
254 1.1 jonathan error = EINVAL;
255 1.1 jonathan goto bail;
256 1.1 jonathan }
257 1.1 jonathan
258 1.19 christos crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA,
259 1.19 christos M_WAITOK);
260 1.1 jonathan if ((error = copyin(sop->key, crie.cri_key,
261 1.1 jonathan crie.cri_klen / 8)))
262 1.1 jonathan goto bail;
263 1.1 jonathan if (thash)
264 1.1 jonathan crie.cri_next = &cria;
265 1.1 jonathan }
266 1.1 jonathan
267 1.1 jonathan if (thash) {
268 1.1 jonathan cria.cri_alg = thash->type;
269 1.1 jonathan cria.cri_klen = sop->mackeylen * 8;
270 1.1 jonathan if (sop->mackeylen != thash->keysize) {
271 1.18 christos DPRINTF(("mackeylen %d != keysize %d\n",
272 1.18 christos sop->mackeylen, thash->keysize));
273 1.1 jonathan error = EINVAL;
274 1.1 jonathan goto bail;
275 1.1 jonathan }
276 1.1 jonathan
277 1.1 jonathan if (cria.cri_klen) {
278 1.19 christos cria.cri_key = malloc(cria.cri_klen / 8,
279 1.19 christos M_XDATA, M_WAITOK);
280 1.1 jonathan if ((error = copyin(sop->mackey, cria.cri_key,
281 1.1 jonathan cria.cri_klen / 8)))
282 1.1 jonathan goto bail;
283 1.1 jonathan }
284 1.1 jonathan }
285 1.1 jonathan
286 1.1 jonathan error = crypto_newsession(&sid, (txform ? &crie : &cria),
287 1.9 jonathan crypto_devallowsoft);
288 1.1 jonathan if (error) {
289 1.18 christos DPRINTF(("SIOCSESSION violates kernel parameters %d\n",
290 1.18 christos error));
291 1.1 jonathan goto bail;
292 1.1 jonathan }
293 1.1 jonathan
294 1.1 jonathan cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen,
295 1.1 jonathan cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform,
296 1.1 jonathan thash);
297 1.1 jonathan
298 1.1 jonathan if (cse == NULL) {
299 1.18 christos DPRINTF(("csecreate failed\n"));
300 1.1 jonathan crypto_freesession(sid);
301 1.1 jonathan error = EINVAL;
302 1.1 jonathan goto bail;
303 1.1 jonathan }
304 1.1 jonathan sop->ses = cse->ses;
305 1.1 jonathan
306 1.1 jonathan bail:
307 1.1 jonathan if (error) {
308 1.1 jonathan if (crie.cri_key)
309 1.1 jonathan FREE(crie.cri_key, M_XDATA);
310 1.1 jonathan if (cria.cri_key)
311 1.1 jonathan FREE(cria.cri_key, M_XDATA);
312 1.1 jonathan }
313 1.1 jonathan break;
314 1.1 jonathan case CIOCFSESSION:
315 1.1 jonathan ses = *(u_int32_t *)data;
316 1.1 jonathan cse = csefind(fcr, ses);
317 1.1 jonathan if (cse == NULL)
318 1.1 jonathan return (EINVAL);
319 1.1 jonathan csedelete(fcr, cse);
320 1.1 jonathan error = csefree(cse);
321 1.1 jonathan break;
322 1.1 jonathan case CIOCCRYPT:
323 1.1 jonathan cop = (struct crypt_op *)data;
324 1.1 jonathan cse = csefind(fcr, cop->ses);
325 1.18 christos if (cse == NULL) {
326 1.18 christos DPRINTF(("csefind failed\n"));
327 1.1 jonathan return (EINVAL);
328 1.18 christos }
329 1.16 christos error = cryptodev_op(cse, cop, l);
330 1.1 jonathan break;
331 1.1 jonathan case CIOCKEY:
332 1.1 jonathan error = cryptodev_key((struct crypt_kop *)data);
333 1.1 jonathan break;
334 1.1 jonathan case CIOCASYMFEAT:
335 1.1 jonathan error = crypto_getfeat((int *)data);
336 1.1 jonathan break;
337 1.1 jonathan default:
338 1.18 christos DPRINTF(("invalid ioctl cmd %ld\n", cmd));
339 1.1 jonathan error = EINVAL;
340 1.1 jonathan }
341 1.1 jonathan return (error);
342 1.1 jonathan }
343 1.1 jonathan
344 1.1 jonathan static int
345 1.16 christos cryptodev_op(struct csession *cse, struct crypt_op *cop, struct lwp *l)
346 1.1 jonathan {
347 1.1 jonathan struct cryptop *crp = NULL;
348 1.1 jonathan struct cryptodesc *crde = NULL, *crda = NULL;
349 1.1 jonathan int i, error, s;
350 1.1 jonathan
351 1.1 jonathan if (cop->len > 256*1024-4)
352 1.1 jonathan return (E2BIG);
353 1.1 jonathan
354 1.13 jonathan if (cse->txform) {
355 1.13 jonathan if (cop->len == 0 || (cop->len % cse->txform->blocksize) != 0)
356 1.13 jonathan return (EINVAL);
357 1.13 jonathan }
358 1.1 jonathan
359 1.1 jonathan bzero(&cse->uio, sizeof(cse->uio));
360 1.1 jonathan cse->uio.uio_iovcnt = 1;
361 1.1 jonathan cse->uio.uio_resid = 0;
362 1.1 jonathan cse->uio.uio_rw = UIO_WRITE;
363 1.1 jonathan cse->uio.uio_iov = cse->iovec;
364 1.17 yamt UIO_SETUP_SYSSPACE(&cse->uio);
365 1.1 jonathan bzero(&cse->iovec, sizeof(cse->iovec));
366 1.1 jonathan cse->uio.uio_iov[0].iov_len = cop->len;
367 1.1 jonathan cse->uio.uio_iov[0].iov_base = malloc(cop->len, M_XDATA, M_WAITOK);
368 1.1 jonathan for (i = 0; i < cse->uio.uio_iovcnt; i++)
369 1.1 jonathan cse->uio.uio_resid += cse->uio.uio_iov[0].iov_len;
370 1.1 jonathan
371 1.1 jonathan crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL));
372 1.1 jonathan if (crp == NULL) {
373 1.1 jonathan error = ENOMEM;
374 1.1 jonathan goto bail;
375 1.1 jonathan }
376 1.1 jonathan
377 1.1 jonathan if (cse->thash) {
378 1.1 jonathan crda = crp->crp_desc;
379 1.1 jonathan if (cse->txform)
380 1.1 jonathan crde = crda->crd_next;
381 1.1 jonathan } else {
382 1.1 jonathan if (cse->txform)
383 1.1 jonathan crde = crp->crp_desc;
384 1.1 jonathan else {
385 1.1 jonathan error = EINVAL;
386 1.1 jonathan goto bail;
387 1.1 jonathan }
388 1.1 jonathan }
389 1.1 jonathan
390 1.1 jonathan if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len)))
391 1.1 jonathan goto bail;
392 1.1 jonathan
393 1.1 jonathan if (crda) {
394 1.1 jonathan crda->crd_skip = 0;
395 1.1 jonathan crda->crd_len = cop->len;
396 1.1 jonathan crda->crd_inject = 0; /* ??? */
397 1.1 jonathan
398 1.1 jonathan crda->crd_alg = cse->mac;
399 1.1 jonathan crda->crd_key = cse->mackey;
400 1.1 jonathan crda->crd_klen = cse->mackeylen * 8;
401 1.1 jonathan }
402 1.1 jonathan
403 1.1 jonathan if (crde) {
404 1.1 jonathan if (cop->op == COP_ENCRYPT)
405 1.1 jonathan crde->crd_flags |= CRD_F_ENCRYPT;
406 1.1 jonathan else
407 1.1 jonathan crde->crd_flags &= ~CRD_F_ENCRYPT;
408 1.1 jonathan crde->crd_len = cop->len;
409 1.1 jonathan crde->crd_inject = 0;
410 1.1 jonathan
411 1.1 jonathan crde->crd_alg = cse->cipher;
412 1.1 jonathan crde->crd_key = cse->key;
413 1.1 jonathan crde->crd_klen = cse->keylen * 8;
414 1.1 jonathan }
415 1.1 jonathan
416 1.1 jonathan crp->crp_ilen = cop->len;
417 1.1 jonathan crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM
418 1.1 jonathan | (cop->flags & COP_F_BATCH);
419 1.1 jonathan crp->crp_buf = (caddr_t)&cse->uio;
420 1.1 jonathan crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb;
421 1.1 jonathan crp->crp_sid = cse->sid;
422 1.1 jonathan crp->crp_opaque = (void *)cse;
423 1.1 jonathan
424 1.1 jonathan if (cop->iv) {
425 1.1 jonathan if (crde == NULL) {
426 1.1 jonathan error = EINVAL;
427 1.1 jonathan goto bail;
428 1.1 jonathan }
429 1.1 jonathan if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
430 1.1 jonathan error = EINVAL;
431 1.1 jonathan goto bail;
432 1.1 jonathan }
433 1.1 jonathan if ((error = copyin(cop->iv, cse->tmp_iv, cse->txform->blocksize)))
434 1.1 jonathan goto bail;
435 1.1 jonathan bcopy(cse->tmp_iv, crde->crd_iv, cse->txform->blocksize);
436 1.1 jonathan crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT;
437 1.1 jonathan crde->crd_skip = 0;
438 1.1 jonathan } else if (crde) {
439 1.20 christos if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
440 1.20 christos crde->crd_skip = 0;
441 1.20 christos } else {
442 1.20 christos crde->crd_flags |= CRD_F_IV_PRESENT;
443 1.20 christos crde->crd_skip = cse->txform->blocksize;
444 1.20 christos crde->crd_len -= cse->txform->blocksize;
445 1.20 christos }
446 1.1 jonathan }
447 1.1 jonathan
448 1.1 jonathan if (cop->mac) {
449 1.1 jonathan if (crda == NULL) {
450 1.1 jonathan error = EINVAL;
451 1.1 jonathan goto bail;
452 1.1 jonathan }
453 1.1 jonathan crp->crp_mac=cse->tmp_mac;
454 1.1 jonathan }
455 1.1 jonathan
456 1.1 jonathan s = splcrypto(); /* NB: only needed with CRYPTO_F_CBIMM */
457 1.1 jonathan error = crypto_dispatch(crp);
458 1.4 jonathan if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0)
459 1.1 jonathan error = tsleep(crp, PSOCK, "crydev", 0);
460 1.1 jonathan splx(s);
461 1.1 jonathan if (error) {
462 1.1 jonathan goto bail;
463 1.1 jonathan }
464 1.1 jonathan
465 1.1 jonathan if (crp->crp_etype != 0) {
466 1.1 jonathan error = crp->crp_etype;
467 1.1 jonathan goto bail;
468 1.1 jonathan }
469 1.1 jonathan
470 1.1 jonathan if (cse->error) {
471 1.1 jonathan error = cse->error;
472 1.1 jonathan goto bail;
473 1.1 jonathan }
474 1.1 jonathan
475 1.1 jonathan if (cop->dst &&
476 1.1 jonathan (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, cop->len)))
477 1.1 jonathan goto bail;
478 1.1 jonathan
479 1.1 jonathan if (cop->mac &&
480 1.1 jonathan (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize)))
481 1.1 jonathan goto bail;
482 1.1 jonathan
483 1.1 jonathan bail:
484 1.1 jonathan if (crp)
485 1.1 jonathan crypto_freereq(crp);
486 1.1 jonathan if (cse->uio.uio_iov[0].iov_base)
487 1.1 jonathan free(cse->uio.uio_iov[0].iov_base, M_XDATA);
488 1.1 jonathan
489 1.1 jonathan return (error);
490 1.1 jonathan }
491 1.1 jonathan
492 1.1 jonathan static int
493 1.1 jonathan cryptodev_cb(void *op)
494 1.1 jonathan {
495 1.1 jonathan struct cryptop *crp = (struct cryptop *) op;
496 1.1 jonathan struct csession *cse = (struct csession *)crp->crp_opaque;
497 1.1 jonathan
498 1.1 jonathan cse->error = crp->crp_etype;
499 1.1 jonathan if (crp->crp_etype == EAGAIN)
500 1.1 jonathan return crypto_dispatch(crp);
501 1.1 jonathan wakeup_one(crp);
502 1.1 jonathan return (0);
503 1.1 jonathan }
504 1.1 jonathan
505 1.1 jonathan static int
506 1.1 jonathan cryptodevkey_cb(void *op)
507 1.1 jonathan {
508 1.1 jonathan struct cryptkop *krp = (struct cryptkop *) op;
509 1.1 jonathan
510 1.1 jonathan wakeup_one(krp);
511 1.1 jonathan return (0);
512 1.1 jonathan }
513 1.1 jonathan
514 1.1 jonathan static int
515 1.1 jonathan cryptodev_key(struct crypt_kop *kop)
516 1.1 jonathan {
517 1.1 jonathan struct cryptkop *krp = NULL;
518 1.1 jonathan int error = EINVAL;
519 1.1 jonathan int in, out, size, i;
520 1.1 jonathan
521 1.1 jonathan if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) {
522 1.1 jonathan return (EFBIG);
523 1.1 jonathan }
524 1.1 jonathan
525 1.1 jonathan in = kop->crk_iparams;
526 1.1 jonathan out = kop->crk_oparams;
527 1.1 jonathan switch (kop->crk_op) {
528 1.1 jonathan case CRK_MOD_EXP:
529 1.1 jonathan if (in == 3 && out == 1)
530 1.1 jonathan break;
531 1.1 jonathan return (EINVAL);
532 1.1 jonathan case CRK_MOD_EXP_CRT:
533 1.1 jonathan if (in == 6 && out == 1)
534 1.1 jonathan break;
535 1.1 jonathan return (EINVAL);
536 1.1 jonathan case CRK_DSA_SIGN:
537 1.1 jonathan if (in == 5 && out == 2)
538 1.1 jonathan break;
539 1.1 jonathan return (EINVAL);
540 1.1 jonathan case CRK_DSA_VERIFY:
541 1.1 jonathan if (in == 7 && out == 0)
542 1.1 jonathan break;
543 1.1 jonathan return (EINVAL);
544 1.1 jonathan case CRK_DH_COMPUTE_KEY:
545 1.1 jonathan if (in == 3 && out == 1)
546 1.1 jonathan break;
547 1.1 jonathan return (EINVAL);
548 1.1 jonathan default:
549 1.1 jonathan return (EINVAL);
550 1.1 jonathan }
551 1.1 jonathan
552 1.1 jonathan krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK);
553 1.1 jonathan if (!krp)
554 1.1 jonathan return (ENOMEM);
555 1.1 jonathan bzero(krp, sizeof *krp);
556 1.1 jonathan krp->krp_op = kop->crk_op;
557 1.1 jonathan krp->krp_status = kop->crk_status;
558 1.1 jonathan krp->krp_iparams = kop->crk_iparams;
559 1.1 jonathan krp->krp_oparams = kop->crk_oparams;
560 1.1 jonathan krp->krp_status = 0;
561 1.1 jonathan krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb;
562 1.1 jonathan
563 1.1 jonathan for (i = 0; i < CRK_MAXPARAM; i++)
564 1.1 jonathan krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits;
565 1.1 jonathan for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) {
566 1.1 jonathan size = (krp->krp_param[i].crp_nbits + 7) / 8;
567 1.1 jonathan if (size == 0)
568 1.1 jonathan continue;
569 1.19 christos krp->krp_param[i].crp_p = malloc(size, M_XDATA, M_WAITOK);
570 1.1 jonathan if (i >= krp->krp_iparams)
571 1.1 jonathan continue;
572 1.1 jonathan error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size);
573 1.1 jonathan if (error)
574 1.1 jonathan goto fail;
575 1.1 jonathan }
576 1.1 jonathan
577 1.1 jonathan error = crypto_kdispatch(krp);
578 1.1 jonathan if (error == 0)
579 1.1 jonathan error = tsleep(krp, PSOCK, "crydev", 0);
580 1.1 jonathan if (error)
581 1.1 jonathan goto fail;
582 1.1 jonathan
583 1.1 jonathan if (krp->krp_status != 0) {
584 1.1 jonathan error = krp->krp_status;
585 1.1 jonathan goto fail;
586 1.1 jonathan }
587 1.1 jonathan
588 1.1 jonathan for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) {
589 1.1 jonathan size = (krp->krp_param[i].crp_nbits + 7) / 8;
590 1.1 jonathan if (size == 0)
591 1.1 jonathan continue;
592 1.1 jonathan error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size);
593 1.1 jonathan if (error)
594 1.1 jonathan goto fail;
595 1.1 jonathan }
596 1.1 jonathan
597 1.1 jonathan fail:
598 1.1 jonathan if (krp) {
599 1.1 jonathan kop->crk_status = krp->krp_status;
600 1.1 jonathan for (i = 0; i < CRK_MAXPARAM; i++) {
601 1.1 jonathan if (krp->krp_param[i].crp_p)
602 1.1 jonathan FREE(krp->krp_param[i].crp_p, M_XDATA);
603 1.1 jonathan }
604 1.1 jonathan free(krp, M_XDATA);
605 1.1 jonathan }
606 1.1 jonathan return (error);
607 1.1 jonathan }
608 1.1 jonathan
609 1.1 jonathan /* ARGSUSED */
610 1.1 jonathan static int
611 1.16 christos cryptof_close(struct file *fp, struct lwp *l)
612 1.1 jonathan {
613 1.1 jonathan struct fcrypt *fcr = (struct fcrypt *)fp->f_data;
614 1.1 jonathan struct csession *cse;
615 1.1 jonathan
616 1.1 jonathan while ((cse = TAILQ_FIRST(&fcr->csessions))) {
617 1.1 jonathan TAILQ_REMOVE(&fcr->csessions, cse, next);
618 1.1 jonathan (void)csefree(cse);
619 1.1 jonathan }
620 1.1 jonathan FREE(fcr, M_XDATA);
621 1.1 jonathan
622 1.1 jonathan /* close() stolen from sys/kern/kern_ktrace.c */
623 1.1 jonathan
624 1.1 jonathan fp->f_data = NULL;
625 1.1 jonathan #if 0
626 1.16 christos FILE_UNUSE(fp, l); /* release file */
627 1.16 christos fdrelease(l, fd); /* release fd table slot */
628 1.1 jonathan #endif
629 1.1 jonathan
630 1.1 jonathan return 0;
631 1.1 jonathan }
632 1.1 jonathan
633 1.1 jonathan static struct csession *
634 1.1 jonathan csefind(struct fcrypt *fcr, u_int ses)
635 1.1 jonathan {
636 1.1 jonathan struct csession *cse;
637 1.1 jonathan
638 1.1 jonathan TAILQ_FOREACH(cse, &fcr->csessions, next)
639 1.1 jonathan if (cse->ses == ses)
640 1.1 jonathan return (cse);
641 1.1 jonathan return (NULL);
642 1.1 jonathan }
643 1.1 jonathan
644 1.1 jonathan static int
645 1.1 jonathan csedelete(struct fcrypt *fcr, struct csession *cse_del)
646 1.1 jonathan {
647 1.1 jonathan struct csession *cse;
648 1.1 jonathan
649 1.1 jonathan TAILQ_FOREACH(cse, &fcr->csessions, next) {
650 1.1 jonathan if (cse == cse_del) {
651 1.1 jonathan TAILQ_REMOVE(&fcr->csessions, cse, next);
652 1.1 jonathan return (1);
653 1.1 jonathan }
654 1.1 jonathan }
655 1.1 jonathan return (0);
656 1.1 jonathan }
657 1.1 jonathan
658 1.1 jonathan static struct csession *
659 1.1 jonathan cseadd(struct fcrypt *fcr, struct csession *cse)
660 1.1 jonathan {
661 1.1 jonathan TAILQ_INSERT_TAIL(&fcr->csessions, cse, next);
662 1.1 jonathan cse->ses = fcr->sesn++;
663 1.1 jonathan return (cse);
664 1.1 jonathan }
665 1.1 jonathan
666 1.1 jonathan static struct csession *
667 1.1 jonathan csecreate(struct fcrypt *fcr, u_int64_t sid, caddr_t key, u_int64_t keylen,
668 1.1 jonathan caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac,
669 1.1 jonathan struct enc_xform *txform, struct auth_hash *thash)
670 1.1 jonathan {
671 1.1 jonathan struct csession *cse;
672 1.1 jonathan
673 1.1 jonathan MALLOC(cse, struct csession *, sizeof(struct csession),
674 1.1 jonathan M_XDATA, M_NOWAIT);
675 1.1 jonathan if (cse == NULL)
676 1.1 jonathan return NULL;
677 1.1 jonathan cse->key = key;
678 1.1 jonathan cse->keylen = keylen/8;
679 1.1 jonathan cse->mackey = mackey;
680 1.1 jonathan cse->mackeylen = mackeylen/8;
681 1.1 jonathan cse->sid = sid;
682 1.1 jonathan cse->cipher = cipher;
683 1.1 jonathan cse->mac = mac;
684 1.1 jonathan cse->txform = txform;
685 1.1 jonathan cse->thash = thash;
686 1.1 jonathan cseadd(fcr, cse);
687 1.1 jonathan return (cse);
688 1.1 jonathan }
689 1.1 jonathan
690 1.1 jonathan static int
691 1.1 jonathan csefree(struct csession *cse)
692 1.1 jonathan {
693 1.1 jonathan int error;
694 1.1 jonathan
695 1.1 jonathan error = crypto_freesession(cse->sid);
696 1.1 jonathan if (cse->key)
697 1.1 jonathan FREE(cse->key, M_XDATA);
698 1.1 jonathan if (cse->mackey)
699 1.1 jonathan FREE(cse->mackey, M_XDATA);
700 1.1 jonathan FREE(cse, M_XDATA);
701 1.1 jonathan return (error);
702 1.1 jonathan }
703 1.1 jonathan
704 1.1 jonathan static int
705 1.16 christos cryptoopen(dev_t dev, int flag, int mode, struct lwp *l)
706 1.1 jonathan {
707 1.1 jonathan if (crypto_usercrypto == 0)
708 1.1 jonathan return (ENXIO);
709 1.1 jonathan return (0);
710 1.1 jonathan }
711 1.1 jonathan
712 1.1 jonathan static int
713 1.1 jonathan cryptoread(dev_t dev, struct uio *uio, int ioflag)
714 1.1 jonathan {
715 1.1 jonathan return (EIO);
716 1.1 jonathan }
717 1.1 jonathan
718 1.1 jonathan static int
719 1.1 jonathan cryptowrite(dev_t dev, struct uio *uio, int ioflag)
720 1.1 jonathan {
721 1.1 jonathan return (EIO);
722 1.1 jonathan }
723 1.1 jonathan
724 1.1 jonathan static int
725 1.16 christos cryptoioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct lwp *l)
726 1.1 jonathan {
727 1.1 jonathan struct file *f;
728 1.1 jonathan struct fcrypt *fcr;
729 1.1 jonathan int fd, error;
730 1.1 jonathan
731 1.1 jonathan switch (cmd) {
732 1.1 jonathan case CRIOGET:
733 1.1 jonathan MALLOC(fcr, struct fcrypt *,
734 1.1 jonathan sizeof(struct fcrypt), M_XDATA, M_WAITOK);
735 1.1 jonathan TAILQ_INIT(&fcr->csessions);
736 1.1 jonathan fcr->sesn = 0;
737 1.1 jonathan
738 1.16 christos error = falloc(l->l_proc, &f, &fd);
739 1.1 jonathan if (error) {
740 1.1 jonathan FREE(fcr, M_XDATA);
741 1.1 jonathan return (error);
742 1.1 jonathan }
743 1.1 jonathan f->f_flag = FREAD | FWRITE;
744 1.1 jonathan f->f_type = DTYPE_CRYPTO;
745 1.1 jonathan f->f_ops = &cryptofops;
746 1.1 jonathan f->f_data = (caddr_t) fcr;
747 1.1 jonathan *(u_int32_t *)data = fd;
748 1.1 jonathan FILE_SET_MATURE(f);
749 1.16 christos FILE_UNUSE(f, l);
750 1.1 jonathan break;
751 1.1 jonathan default:
752 1.1 jonathan error = EINVAL;
753 1.1 jonathan break;
754 1.1 jonathan }
755 1.1 jonathan return (error);
756 1.1 jonathan }
757 1.1 jonathan
758 1.1 jonathan int
759 1.16 christos cryptoselect(dev_t dev, int rw, struct lwp *l)
760 1.1 jonathan {
761 1.1 jonathan return (0);
762 1.1 jonathan }
763 1.1 jonathan
764 1.1 jonathan /*static*/
765 1.1 jonathan struct cdevsw crypto_cdevsw = {
766 1.1 jonathan /* open */ cryptoopen,
767 1.1 jonathan /* close */ nullclose,
768 1.1 jonathan /* read */ cryptoread,
769 1.1 jonathan /* write */ cryptowrite,
770 1.1 jonathan /* ioctl */ cryptoioctl,
771 1.1 jonathan /* ttstop?*/ nostop,
772 1.1 jonathan /* ??*/ notty,
773 1.1 jonathan /* poll */ cryptoselect /*nopoll*/,
774 1.1 jonathan /* mmap */ nommap,
775 1.1 jonathan /* kqfilter */ nokqfilter,
776 1.1 jonathan };
777 1.1 jonathan
778 1.15 thorpej #ifdef __NetBSD__
779 1.15 thorpej /*
780 1.15 thorpej * Pseudo-device initialization routine for /dev/crypto
781 1.15 thorpej */
782 1.15 thorpej void cryptoattach(int);
783 1.15 thorpej
784 1.15 thorpej void
785 1.15 thorpej cryptoattach(int num)
786 1.15 thorpej {
787 1.15 thorpej
788 1.15 thorpej /* nothing to do */
789 1.15 thorpej }
790 1.15 thorpej #endif /* __NetBSD__ */
791