1 /* $FreeBSD: src/sys/opencrypto/cryptosoft.c,v 1.23 2009/02/05 17:43:12 imp Exp $ */
2 /* $OpenBSD: cryptosoft.c,v 1.35 2002/04/26 08:43:50 deraadt Exp $ */
5 * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
6 * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
8 * This code was written by Angelos D. Keromytis in Athens, Greece, in
9 * February 2000. Network Security Technologies Inc. (NSTI) kindly
10 * supported the development of this code.
12 * Copyright (c) 2000, 2001 Angelos D. Keromytis
14 * Permission to use, copy, and modify this software with or without fee
15 * is hereby granted, provided that this entire notice is included in
16 * all source code copies of any software which is or includes a copy or
17 * modification of this software.
19 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
20 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
21 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
22 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
26 #include <sys/param.h>
27 #include <sys/systm.h>
28 #include <sys/malloc.h>
30 #include <sys/module.h>
31 #include <sys/sysctl.h>
32 #include <sys/errno.h>
33 #include <sys/random.h>
34 #include <sys/kernel.h>
37 #include <crypto/blowfish/blowfish.h>
38 #include <crypto/sha1.h>
39 #include <opencrypto/rmd160.h>
40 #include <opencrypto/cast.h>
41 #include <opencrypto/skipjack.h>
44 #include <opencrypto/cryptodev.h>
45 #include <opencrypto/cryptosoft.h>
46 #include <opencrypto/xform.h>
50 #include "cryptodev_if.h"
52 static int32_t swcr_id;
53 static struct swcr_data **swcr_sessions = NULL;
54 static u_int32_t swcr_sesnum;
56 u_int8_t hmac_ipad_buffer[HMAC_MAX_BLOCK_LEN];
57 u_int8_t hmac_opad_buffer[HMAC_MAX_BLOCK_LEN];
59 static int swcr_encdec(struct cryptodesc *, struct swcr_data *, caddr_t, int);
60 static int swcr_authcompute(struct cryptodesc *, struct swcr_data *, caddr_t, int);
61 static int swcr_compdec(struct cryptodesc *, struct swcr_data *, caddr_t, int);
62 static int swcr_freesession(device_t dev, u_int64_t tid);
65 * Apply a symmetric encryption/decryption algorithm.
68 swcr_encdec(struct cryptodesc *crd, struct swcr_data *sw, caddr_t buf,
71 unsigned char iv[EALG_MAX_BLOCK_LEN], blk[EALG_MAX_BLOCK_LEN], *idat;
72 unsigned char *ivp, piv[EALG_MAX_BLOCK_LEN];
73 struct enc_xform *exf;
77 blks = exf->blocksize;
79 /* Check for non-padded data */
80 if (crd->crd_len % blks)
83 /* Initialize the IV */
84 if (crd->crd_flags & CRD_F_ENCRYPT) {
85 /* IV explicitly provided ? */
86 if (crd->crd_flags & CRD_F_IV_EXPLICIT)
87 bcopy(crd->crd_iv, iv, blks);
91 /* Do we need to write the IV */
92 if (!(crd->crd_flags & CRD_F_IV_PRESENT))
93 crypto_copyback(flags, buf, crd->crd_inject, blks, iv);
95 } else { /* Decryption */
96 /* IV explicitly provided ? */
97 if (crd->crd_flags & CRD_F_IV_EXPLICIT)
98 bcopy(crd->crd_iv, iv, blks);
101 crypto_copydata(flags, buf, crd->crd_inject, blks, iv);
105 if (crd->crd_flags & CRD_F_KEY_EXPLICIT) {
108 if (sw->sw_kschedule)
109 exf->zerokey(&(sw->sw_kschedule));
110 error = exf->setkey(&sw->sw_kschedule,
111 crd->crd_key, crd->crd_klen / 8);
117 if (flags & CRYPTO_F_IMBUF) {
118 struct mbuf *m = (struct mbuf *) buf;
120 /* Find beginning of data */
121 m = m_getptr(m, crd->crd_skip, &k);
129 * If there's insufficient data at the end of
130 * an mbuf, we have to do some copying.
132 if (m->m_len < k + blks && m->m_len != k) {
133 m_copydata(m, k, blks, blk);
135 /* Actual encryption/decryption */
136 if (crd->crd_flags & CRD_F_ENCRYPT) {
137 /* XOR with previous block */
138 for (j = 0; j < blks; j++)
141 exf->encrypt(sw->sw_kschedule, blk);
144 * Keep encrypted block for XOR'ing
147 bcopy(blk, iv, blks);
149 } else { /* decrypt */
151 * Keep encrypted block for XOR'ing
155 bcopy(blk, piv, blks);
157 bcopy(blk, iv, blks);
159 exf->decrypt(sw->sw_kschedule, blk);
161 /* XOR with previous block */
162 for (j = 0; j < blks; j++)
166 bcopy(piv, iv, blks);
171 /* Copy back decrypted block */
172 m_copyback(m, k, blks, blk);
174 /* Advance pointer */
175 m = m_getptr(m, k + blks, &k);
181 /* Could be done... */
186 /* Skip possibly empty mbufs */
188 for (m = m->m_next; m && m->m_len == 0;
199 * Warning: idat may point to garbage here, but
200 * we only use it in the while() loop, only if
201 * there are indeed enough data.
203 idat = mtod(m, unsigned char *) + k;
205 while (m->m_len >= k + blks && i > 0) {
206 if (crd->crd_flags & CRD_F_ENCRYPT) {
207 /* XOR with previous block/IV */
208 for (j = 0; j < blks; j++)
211 exf->encrypt(sw->sw_kschedule, idat);
213 } else { /* decrypt */
215 * Keep encrypted block to be used
216 * in next block's processing.
219 bcopy(idat, piv, blks);
221 bcopy(idat, iv, blks);
223 exf->decrypt(sw->sw_kschedule, idat);
225 /* XOR with previous block/IV */
226 for (j = 0; j < blks; j++)
230 bcopy(piv, iv, blks);
241 return 0; /* Done with mbuf encryption/decryption */
242 } else if (flags & CRYPTO_F_IOV) {
243 struct uio *uio = (struct uio *) buf;
246 /* Find beginning of data */
247 iov = cuio_getptr(uio, crd->crd_skip, &k);
255 * If there's insufficient data at the end of
256 * an iovec, we have to do some copying.
258 if (iov->iov_len < k + blks && iov->iov_len != k) {
259 cuio_copydata(uio, k, blks, blk);
261 /* Actual encryption/decryption */
262 if (crd->crd_flags & CRD_F_ENCRYPT) {
263 /* XOR with previous block */
264 for (j = 0; j < blks; j++)
267 exf->encrypt(sw->sw_kschedule, blk);
270 * Keep encrypted block for XOR'ing
273 bcopy(blk, iv, blks);
275 } else { /* decrypt */
277 * Keep encrypted block for XOR'ing
281 bcopy(blk, piv, blks);
283 bcopy(blk, iv, blks);
285 exf->decrypt(sw->sw_kschedule, blk);
287 /* XOR with previous block */
288 for (j = 0; j < blks; j++)
292 bcopy(piv, iv, blks);
297 /* Copy back decrypted block */
298 cuio_copyback(uio, k, blks, blk);
300 /* Advance pointer */
301 iov = cuio_getptr(uio, k + blks, &k);
307 /* Could be done... */
313 * Warning: idat may point to garbage here, but
314 * we only use it in the while() loop, only if
315 * there are indeed enough data.
317 idat = (char *)iov->iov_base + k;
319 while (iov->iov_len >= k + blks && i > 0) {
320 if (crd->crd_flags & CRD_F_ENCRYPT) {
321 /* XOR with previous block/IV */
322 for (j = 0; j < blks; j++)
325 exf->encrypt(sw->sw_kschedule, idat);
327 } else { /* decrypt */
329 * Keep encrypted block to be used
330 * in next block's processing.
333 bcopy(idat, piv, blks);
335 bcopy(idat, iv, blks);
337 exf->decrypt(sw->sw_kschedule, idat);
339 /* XOR with previous block/IV */
340 for (j = 0; j < blks; j++)
344 bcopy(piv, iv, blks);
353 if (k == iov->iov_len) {
359 return 0; /* Done with iovec encryption/decryption */
360 } else { /* contiguous buffer */
361 if (crd->crd_flags & CRD_F_ENCRYPT) {
362 for (i = crd->crd_skip;
363 i < crd->crd_skip + crd->crd_len; i += blks) {
364 /* XOR with the IV/previous block, as appropriate. */
365 if (i == crd->crd_skip)
366 for (k = 0; k < blks; k++)
367 buf[i + k] ^= ivp[k];
369 for (k = 0; k < blks; k++)
370 buf[i + k] ^= buf[i + k - blks];
371 exf->encrypt(sw->sw_kschedule, buf + i);
373 } else { /* Decrypt */
375 * Start at the end, so we don't need to keep the encrypted
376 * block as the IV for the next block.
378 for (i = crd->crd_skip + crd->crd_len - blks;
379 i >= crd->crd_skip; i -= blks) {
380 exf->decrypt(sw->sw_kschedule, buf + i);
382 /* XOR with the IV/previous block, as appropriate */
383 if (i == crd->crd_skip)
384 for (k = 0; k < blks; k++)
385 buf[i + k] ^= ivp[k];
387 for (k = 0; k < blks; k++)
388 buf[i + k] ^= buf[i + k - blks];
392 return 0; /* Done with contiguous buffer encryption/decryption */
400 swcr_authprepare(struct auth_hash *axf, struct swcr_data *sw, u_char *key,
408 case CRYPTO_MD5_HMAC:
409 case CRYPTO_SHA1_HMAC:
410 case CRYPTO_SHA2_256_HMAC:
411 case CRYPTO_SHA2_384_HMAC:
412 case CRYPTO_SHA2_512_HMAC:
413 case CRYPTO_NULL_HMAC:
414 case CRYPTO_RIPEMD160_HMAC:
415 for (k = 0; k < klen; k++)
416 key[k] ^= HMAC_IPAD_VAL;
418 axf->Init(sw->sw_ictx);
419 axf->Update(sw->sw_ictx, key, klen);
420 axf->Update(sw->sw_ictx, hmac_ipad_buffer, axf->blocksize - klen);
422 for (k = 0; k < klen; k++)
423 key[k] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL);
425 axf->Init(sw->sw_octx);
426 axf->Update(sw->sw_octx, key, klen);
427 axf->Update(sw->sw_octx, hmac_opad_buffer, axf->blocksize - klen);
429 for (k = 0; k < klen; k++)
430 key[k] ^= HMAC_OPAD_VAL;
432 case CRYPTO_MD5_KPDK:
433 case CRYPTO_SHA1_KPDK:
435 /* We need a buffer that can hold an md5 and a sha1 result. */
436 u_char buf[SHA1_RESULTLEN];
439 bcopy(key, sw->sw_octx, klen);
440 axf->Init(sw->sw_ictx);
441 axf->Update(sw->sw_ictx, key, klen);
442 axf->Final(buf, sw->sw_ictx);
446 kprintf("%s: CRD_F_KEY_EXPLICIT flag given, but algorithm %d "
447 "doesn't use keys.\n", __func__, axf->type);
452 * Compute keyed-hash authenticator.
455 swcr_authcompute(struct cryptodesc *crd, struct swcr_data *sw, caddr_t buf,
458 unsigned char aalg[HASH_MAX_LEN];
459 struct auth_hash *axf;
463 if (sw->sw_ictx == 0)
468 if (crd->crd_flags & CRD_F_KEY_EXPLICIT)
469 swcr_authprepare(axf, sw, crd->crd_key, crd->crd_klen);
471 bcopy(sw->sw_ictx, &ctx, axf->ctxsize);
473 err = crypto_apply(flags, buf, crd->crd_skip, crd->crd_len,
474 (int (*)(void *, void *, unsigned int))axf->Update, (caddr_t)&ctx);
478 switch (sw->sw_alg) {
479 case CRYPTO_MD5_HMAC:
480 case CRYPTO_SHA1_HMAC:
481 case CRYPTO_SHA2_256_HMAC:
482 case CRYPTO_SHA2_384_HMAC:
483 case CRYPTO_SHA2_512_HMAC:
484 case CRYPTO_RIPEMD160_HMAC:
485 if (sw->sw_octx == NULL)
488 axf->Final(aalg, &ctx);
489 bcopy(sw->sw_octx, &ctx, axf->ctxsize);
490 axf->Update(&ctx, aalg, axf->hashsize);
491 axf->Final(aalg, &ctx);
494 case CRYPTO_MD5_KPDK:
495 case CRYPTO_SHA1_KPDK:
496 if (sw->sw_octx == NULL)
499 axf->Update(&ctx, sw->sw_octx, sw->sw_klen);
500 axf->Final(aalg, &ctx);
503 case CRYPTO_NULL_HMAC:
504 axf->Final(aalg, &ctx);
508 /* Inject the authentication data */
509 crypto_copyback(flags, buf, crd->crd_inject,
510 sw->sw_mlen == 0 ? axf->hashsize : sw->sw_mlen, aalg);
515 * Apply a compression/decompression algorithm
518 swcr_compdec(struct cryptodesc *crd, struct swcr_data *sw,
519 caddr_t buf, int flags)
521 u_int8_t *data, *out;
522 struct comp_algo *cxf;
528 /* We must handle the whole buffer of data in one time
529 * then if there is not all the data in the mbuf, we must
533 data = kmalloc(crd->crd_len, M_CRYPTO_DATA, M_NOWAIT);
536 crypto_copydata(flags, buf, crd->crd_skip, crd->crd_len, data);
538 if (crd->crd_flags & CRD_F_COMP)
539 result = cxf->compress(data, crd->crd_len, &out);
541 result = cxf->decompress(data, crd->crd_len, &out);
543 kfree(data, M_CRYPTO_DATA);
547 /* Copy back the (de)compressed data. m_copyback is
548 * extending the mbuf as necessary.
550 sw->sw_size = result;
551 /* Check the compressed size when doing compression */
552 if (crd->crd_flags & CRD_F_COMP) {
553 if (result > crd->crd_len) {
554 /* Compression was useless, we lost time */
555 kfree(out, M_CRYPTO_DATA);
560 crypto_copyback(flags, buf, crd->crd_skip, result, out);
561 if (result < crd->crd_len) {
562 adj = result - crd->crd_len;
563 if (flags & CRYPTO_F_IMBUF) {
564 adj = result - crd->crd_len;
565 m_adj((struct mbuf *)buf, adj);
566 } else if (flags & CRYPTO_F_IOV) {
567 struct uio *uio = (struct uio *)buf;
570 adj = crd->crd_len - result;
571 ind = uio->uio_iovcnt - 1;
573 while (adj > 0 && ind >= 0) {
574 if (adj < uio->uio_iov[ind].iov_len) {
575 uio->uio_iov[ind].iov_len -= adj;
579 adj -= uio->uio_iov[ind].iov_len;
580 uio->uio_iov[ind].iov_len = 0;
586 kfree(out, M_CRYPTO_DATA);
591 * Generate a new software session.
594 swcr_newsession(device_t dev, u_int32_t *sid, struct cryptoini *cri)
596 struct swcr_data **swd;
597 struct auth_hash *axf;
598 struct enc_xform *txf;
599 struct comp_algo *cxf;
603 if (sid == NULL || cri == NULL)
607 for (i = 1; i < swcr_sesnum; i++)
608 if (swcr_sessions[i] == NULL)
611 i = 1; /* NB: to silence compiler warning */
613 if (swcr_sessions == NULL || i == swcr_sesnum) {
614 if (swcr_sessions == NULL) {
615 i = 1; /* We leave swcr_sessions[0] empty */
616 swcr_sesnum = CRYPTO_SW_SESSIONS;
620 swd = kmalloc(swcr_sesnum * sizeof(struct swcr_data *),
621 M_CRYPTO_DATA, M_NOWAIT|M_ZERO);
623 /* Reset session number */
624 if (swcr_sesnum == CRYPTO_SW_SESSIONS)
631 /* Copy existing sessions */
632 if (swcr_sessions != NULL) {
633 bcopy(swcr_sessions, swd,
634 (swcr_sesnum / 2) * sizeof(struct swcr_data *));
635 kfree(swcr_sessions, M_CRYPTO_DATA);
641 swd = &swcr_sessions[i];
645 *swd = kmalloc(sizeof(struct swcr_data),
646 M_CRYPTO_DATA, M_NOWAIT|M_ZERO);
648 swcr_freesession(dev, i);
652 switch (cri->cri_alg) {
654 txf = &enc_xform_des;
656 case CRYPTO_3DES_CBC:
657 txf = &enc_xform_3des;
660 txf = &enc_xform_blf;
662 case CRYPTO_CAST_CBC:
663 txf = &enc_xform_cast5;
665 case CRYPTO_SKIPJACK_CBC:
666 txf = &enc_xform_skipjack;
668 case CRYPTO_RIJNDAEL128_CBC:
669 txf = &enc_xform_rijndael128;
671 case CRYPTO_CAMELLIA_CBC:
672 txf = &enc_xform_camellia;
674 case CRYPTO_NULL_CBC:
675 txf = &enc_xform_null;
678 if (cri->cri_key != NULL) {
679 error = txf->setkey(&((*swd)->sw_kschedule),
680 cri->cri_key, cri->cri_klen / 8);
682 swcr_freesession(dev, i);
686 (*swd)->sw_exf = txf;
689 case CRYPTO_MD5_HMAC:
690 axf = &auth_hash_hmac_md5;
692 case CRYPTO_SHA1_HMAC:
693 axf = &auth_hash_hmac_sha1;
695 case CRYPTO_SHA2_256_HMAC:
696 axf = &auth_hash_hmac_sha2_256;
698 case CRYPTO_SHA2_384_HMAC:
699 axf = &auth_hash_hmac_sha2_384;
701 case CRYPTO_SHA2_512_HMAC:
702 axf = &auth_hash_hmac_sha2_512;
704 case CRYPTO_NULL_HMAC:
705 axf = &auth_hash_null;
707 case CRYPTO_RIPEMD160_HMAC:
708 axf = &auth_hash_hmac_ripemd_160;
710 (*swd)->sw_ictx = kmalloc(axf->ctxsize, M_CRYPTO_DATA,
712 if ((*swd)->sw_ictx == NULL) {
713 swcr_freesession(dev, i);
717 (*swd)->sw_octx = kmalloc(axf->ctxsize, M_CRYPTO_DATA,
719 if ((*swd)->sw_octx == NULL) {
720 swcr_freesession(dev, i);
724 if (cri->cri_key != NULL) {
725 swcr_authprepare(axf, *swd, cri->cri_key,
729 (*swd)->sw_mlen = cri->cri_mlen;
730 (*swd)->sw_axf = axf;
733 case CRYPTO_MD5_KPDK:
734 axf = &auth_hash_key_md5;
737 case CRYPTO_SHA1_KPDK:
738 axf = &auth_hash_key_sha1;
740 (*swd)->sw_ictx = kmalloc(axf->ctxsize, M_CRYPTO_DATA,
742 if ((*swd)->sw_ictx == NULL) {
743 swcr_freesession(dev, i);
747 (*swd)->sw_octx = kmalloc(cri->cri_klen / 8,
748 M_CRYPTO_DATA, M_NOWAIT);
749 if ((*swd)->sw_octx == NULL) {
750 swcr_freesession(dev, i);
754 /* Store the key so we can "append" it to the payload */
755 if (cri->cri_key != NULL) {
756 swcr_authprepare(axf, *swd, cri->cri_key,
760 (*swd)->sw_mlen = cri->cri_mlen;
761 (*swd)->sw_axf = axf;
765 axf = &auth_hash_md5;
769 axf = &auth_hash_sha1;
771 (*swd)->sw_ictx = kmalloc(axf->ctxsize, M_CRYPTO_DATA,
773 if ((*swd)->sw_ictx == NULL) {
774 swcr_freesession(dev, i);
778 axf->Init((*swd)->sw_ictx);
779 (*swd)->sw_mlen = cri->cri_mlen;
780 (*swd)->sw_axf = axf;
783 case CRYPTO_DEFLATE_COMP:
784 cxf = &comp_algo_deflate;
785 (*swd)->sw_cxf = cxf;
788 swcr_freesession(dev, i);
792 (*swd)->sw_alg = cri->cri_alg;
794 swd = &((*swd)->sw_next);
803 swcr_freesession(device_t dev, u_int64_t tid)
805 struct swcr_data *swd;
806 struct enc_xform *txf;
807 struct auth_hash *axf;
808 struct comp_algo *cxf;
809 u_int32_t sid = CRYPTO_SESID2LID(tid);
811 if (sid > swcr_sesnum || swcr_sessions == NULL ||
812 swcr_sessions[sid] == NULL)
815 /* Silently accept and return */
819 while ((swd = swcr_sessions[sid]) != NULL) {
820 swcr_sessions[sid] = swd->sw_next;
822 switch (swd->sw_alg) {
824 case CRYPTO_3DES_CBC:
826 case CRYPTO_CAST_CBC:
827 case CRYPTO_SKIPJACK_CBC:
828 case CRYPTO_RIJNDAEL128_CBC:
829 case CRYPTO_CAMELLIA_CBC:
830 case CRYPTO_NULL_CBC:
833 if (swd->sw_kschedule)
834 txf->zerokey(&(swd->sw_kschedule));
837 case CRYPTO_MD5_HMAC:
838 case CRYPTO_SHA1_HMAC:
839 case CRYPTO_SHA2_256_HMAC:
840 case CRYPTO_SHA2_384_HMAC:
841 case CRYPTO_SHA2_512_HMAC:
842 case CRYPTO_RIPEMD160_HMAC:
843 case CRYPTO_NULL_HMAC:
847 bzero(swd->sw_ictx, axf->ctxsize);
848 kfree(swd->sw_ictx, M_CRYPTO_DATA);
851 bzero(swd->sw_octx, axf->ctxsize);
852 kfree(swd->sw_octx, M_CRYPTO_DATA);
856 case CRYPTO_MD5_KPDK:
857 case CRYPTO_SHA1_KPDK:
861 bzero(swd->sw_ictx, axf->ctxsize);
862 kfree(swd->sw_ictx, M_CRYPTO_DATA);
865 bzero(swd->sw_octx, swd->sw_klen);
866 kfree(swd->sw_octx, M_CRYPTO_DATA);
875 kfree(swd->sw_ictx, M_CRYPTO_DATA);
878 case CRYPTO_DEFLATE_COMP:
883 //FREE(swd, M_CRYPTO_DATA);
884 kfree(swd, M_CRYPTO_DATA);
890 * Process a software request.
893 swcr_process(device_t dev, struct cryptop *crp, int hint)
895 struct cryptodesc *crd;
896 struct swcr_data *sw;
903 if (crp->crp_desc == NULL || crp->crp_buf == NULL) {
904 crp->crp_etype = EINVAL;
908 lid = crp->crp_sid & 0xffffffff;
909 if (lid >= swcr_sesnum || lid == 0 || swcr_sessions[lid] == NULL) {
910 crp->crp_etype = ENOENT;
914 /* Go through crypto descriptors, processing as we go */
915 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
917 * Find the crypto context.
919 * XXX Note that the logic here prevents us from having
920 * XXX the same algorithm multiple times in a session
921 * XXX (or rather, we can but it won't give us the right
922 * XXX results). To do that, we'd need some way of differentiating
923 * XXX between the various instances of an algorithm (so we can
924 * XXX locate the correct crypto context).
926 for (sw = swcr_sessions[lid];
927 sw && sw->sw_alg != crd->crd_alg;
931 /* No such context ? */
933 crp->crp_etype = EINVAL;
936 switch (sw->sw_alg) {
938 case CRYPTO_3DES_CBC:
940 case CRYPTO_CAST_CBC:
941 case CRYPTO_SKIPJACK_CBC:
942 case CRYPTO_RIJNDAEL128_CBC:
943 case CRYPTO_CAMELLIA_CBC:
944 if ((crp->crp_etype = swcr_encdec(crd, sw,
945 crp->crp_buf, crp->crp_flags)) != 0)
948 case CRYPTO_NULL_CBC:
951 case CRYPTO_MD5_HMAC:
952 case CRYPTO_SHA1_HMAC:
953 case CRYPTO_SHA2_256_HMAC:
954 case CRYPTO_SHA2_384_HMAC:
955 case CRYPTO_SHA2_512_HMAC:
956 case CRYPTO_RIPEMD160_HMAC:
957 case CRYPTO_NULL_HMAC:
958 case CRYPTO_MD5_KPDK:
959 case CRYPTO_SHA1_KPDK:
962 if ((crp->crp_etype = swcr_authcompute(crd, sw,
963 crp->crp_buf, crp->crp_flags)) != 0)
967 case CRYPTO_DEFLATE_COMP:
968 if ((crp->crp_etype = swcr_compdec(crd, sw,
969 crp->crp_buf, crp->crp_flags)) != 0)
972 crp->crp_olen = (int)sw->sw_size;
976 /* Unknown/unsupported algorithm */
977 crp->crp_etype = EINVAL;
988 swcr_identify(driver_t *drv, device_t parent)
990 /* NB: order 10 is so we get attached after h/w devices */
991 /* XXX: wouldn't bet about this BUS_ADD_CHILD correctness */
992 if (device_find_child(parent, "cryptosoft", -1) == NULL &&
993 BUS_ADD_CHILD(parent, parent, 10, "cryptosoft", -1) == 0)
994 panic("cryptosoft: could not attach");
998 swcr_probe(device_t dev)
1000 device_set_desc(dev, "software crypto");
1005 swcr_attach(device_t dev)
1007 memset(hmac_ipad_buffer, HMAC_IPAD_VAL, HMAC_MAX_BLOCK_LEN);
1008 memset(hmac_opad_buffer, HMAC_OPAD_VAL, HMAC_MAX_BLOCK_LEN);
1010 swcr_id = crypto_get_driverid(dev,
1011 CRYPTOCAP_F_SOFTWARE | CRYPTOCAP_F_SYNC);
1013 device_printf(dev, "cannot initialize!");
1016 #define REGISTER(alg) \
1017 crypto_register(swcr_id, alg, 0,0)
1018 REGISTER(CRYPTO_DES_CBC);
1019 REGISTER(CRYPTO_3DES_CBC);
1020 REGISTER(CRYPTO_BLF_CBC);
1021 REGISTER(CRYPTO_CAST_CBC);
1022 REGISTER(CRYPTO_SKIPJACK_CBC);
1023 REGISTER(CRYPTO_NULL_CBC);
1024 REGISTER(CRYPTO_MD5_HMAC);
1025 REGISTER(CRYPTO_SHA1_HMAC);
1026 REGISTER(CRYPTO_SHA2_256_HMAC);
1027 REGISTER(CRYPTO_SHA2_384_HMAC);
1028 REGISTER(CRYPTO_SHA2_512_HMAC);
1029 REGISTER(CRYPTO_RIPEMD160_HMAC);
1030 REGISTER(CRYPTO_NULL_HMAC);
1031 REGISTER(CRYPTO_MD5_KPDK);
1032 REGISTER(CRYPTO_SHA1_KPDK);
1033 REGISTER(CRYPTO_MD5);
1034 REGISTER(CRYPTO_SHA1);
1035 REGISTER(CRYPTO_RIJNDAEL128_CBC);
1036 REGISTER(CRYPTO_CAMELLIA_CBC);
1037 REGISTER(CRYPTO_DEFLATE_COMP);
1044 swcr_detach(device_t dev)
1046 crypto_unregister_all(swcr_id);
1047 if (swcr_sessions != NULL)
1048 kfree(swcr_sessions, M_CRYPTO_DATA);
1052 static device_method_t swcr_methods[] = {
1053 DEVMETHOD(device_identify, swcr_identify),
1054 DEVMETHOD(device_probe, swcr_probe),
1055 DEVMETHOD(device_attach, swcr_attach),
1056 DEVMETHOD(device_detach, swcr_detach),
1058 DEVMETHOD(cryptodev_newsession, swcr_newsession),
1059 DEVMETHOD(cryptodev_freesession,swcr_freesession),
1060 DEVMETHOD(cryptodev_process, swcr_process),
1065 static driver_t swcr_driver = {
1068 0, /* NB: no softc */
1070 static devclass_t swcr_devclass;
1073 * NB: We explicitly reference the crypto module so we
1074 * get the necessary ordering when built as a loadable
1075 * module. This is required because we bundle the crypto
1076 * module code together with the cryptosoft driver (otherwise
1077 * normal module dependencies would handle things).
1079 extern int crypto_modevent(struct module *, int, void *);
1080 /* XXX where to attach */
1081 DRIVER_MODULE(cryptosoft, nexus, swcr_driver, swcr_devclass, crypto_modevent,0);
1082 MODULE_VERSION(cryptosoft, 1);
1083 MODULE_DEPEND(cryptosoft, crypto, 1, 1, 1);