The counters are exported by a sysctl and have the same width on all platforms anyway. Reviewed by: cem, delphij, jhb Sponsored by: Rubicon Communications, LLC (Netgate) Differential Revision: https://reviews.freebsd.org/D25465
1613 lines
38 KiB
C
1613 lines
38 KiB
C
/* $OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2001 Theo de Raadt
|
|
* Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
|
|
* Copyright (c) 2014 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* Portions of this software were developed by John-Mark Gurney
|
|
* under sponsorship of the FreeBSD Foundation and
|
|
* Rubicon Communications, LLC (Netgate).
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* Effort sponsored in part by the Defense Advanced Research Projects
|
|
* Agency (DARPA) and Air Force Research Laboratory, Air Force
|
|
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/file.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/random.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/user.h>
|
|
#include <sys/sdt.h>
|
|
|
|
#include <opencrypto/cryptodev.h>
|
|
#include <opencrypto/xform.h>
|
|
|
|
SDT_PROVIDER_DECLARE(opencrypto);
|
|
|
|
SDT_PROBE_DEFINE1(opencrypto, dev, ioctl, error, "int"/*line number*/);
|
|
|
|
#ifdef COMPAT_FREEBSD32
|
|
#include <sys/mount.h>
|
|
#include <compat/freebsd32/freebsd32.h>
|
|
|
|
struct session_op32 {
|
|
u_int32_t cipher;
|
|
u_int32_t mac;
|
|
u_int32_t keylen;
|
|
u_int32_t key;
|
|
int mackeylen;
|
|
u_int32_t mackey;
|
|
u_int32_t ses;
|
|
};
|
|
|
|
struct session2_op32 {
|
|
u_int32_t cipher;
|
|
u_int32_t mac;
|
|
u_int32_t keylen;
|
|
u_int32_t key;
|
|
int mackeylen;
|
|
u_int32_t mackey;
|
|
u_int32_t ses;
|
|
int crid;
|
|
int pad[4];
|
|
};
|
|
|
|
struct crypt_op32 {
|
|
u_int32_t ses;
|
|
u_int16_t op;
|
|
u_int16_t flags;
|
|
u_int len;
|
|
u_int32_t src, dst;
|
|
u_int32_t mac;
|
|
u_int32_t iv;
|
|
};
|
|
|
|
struct crparam32 {
|
|
u_int32_t crp_p;
|
|
u_int crp_nbits;
|
|
};
|
|
|
|
struct crypt_kop32 {
|
|
u_int crk_op;
|
|
u_int crk_status;
|
|
u_short crk_iparams;
|
|
u_short crk_oparams;
|
|
u_int crk_crid;
|
|
struct crparam32 crk_param[CRK_MAXPARAM];
|
|
};
|
|
|
|
#define CIOCGSESSION32 _IOWR('c', 101, struct session_op32)
|
|
#define CIOCCRYPT32 _IOWR('c', 103, struct crypt_op32)
|
|
#define CIOCKEY32 _IOWR('c', 104, struct crypt_kop32)
|
|
#define CIOCGSESSION232 _IOWR('c', 106, struct session2_op32)
|
|
#define CIOCKEY232 _IOWR('c', 107, struct crypt_kop32)
|
|
|
|
static void
|
|
session_op_from_32(const struct session_op32 *from, struct session_op *to)
|
|
{
|
|
|
|
CP(*from, *to, cipher);
|
|
CP(*from, *to, mac);
|
|
CP(*from, *to, keylen);
|
|
PTRIN_CP(*from, *to, key);
|
|
CP(*from, *to, mackeylen);
|
|
PTRIN_CP(*from, *to, mackey);
|
|
CP(*from, *to, ses);
|
|
}
|
|
|
|
static void
|
|
session2_op_from_32(const struct session2_op32 *from, struct session2_op *to)
|
|
{
|
|
|
|
session_op_from_32((const struct session_op32 *)from,
|
|
(struct session_op *)to);
|
|
CP(*from, *to, crid);
|
|
}
|
|
|
|
static void
|
|
session_op_to_32(const struct session_op *from, struct session_op32 *to)
|
|
{
|
|
|
|
CP(*from, *to, cipher);
|
|
CP(*from, *to, mac);
|
|
CP(*from, *to, keylen);
|
|
PTROUT_CP(*from, *to, key);
|
|
CP(*from, *to, mackeylen);
|
|
PTROUT_CP(*from, *to, mackey);
|
|
CP(*from, *to, ses);
|
|
}
|
|
|
|
static void
|
|
session2_op_to_32(const struct session2_op *from, struct session2_op32 *to)
|
|
{
|
|
|
|
session_op_to_32((const struct session_op *)from,
|
|
(struct session_op32 *)to);
|
|
CP(*from, *to, crid);
|
|
}
|
|
|
|
static void
|
|
crypt_op_from_32(const struct crypt_op32 *from, struct crypt_op *to)
|
|
{
|
|
|
|
CP(*from, *to, ses);
|
|
CP(*from, *to, op);
|
|
CP(*from, *to, flags);
|
|
CP(*from, *to, len);
|
|
PTRIN_CP(*from, *to, src);
|
|
PTRIN_CP(*from, *to, dst);
|
|
PTRIN_CP(*from, *to, mac);
|
|
PTRIN_CP(*from, *to, iv);
|
|
}
|
|
|
|
static void
|
|
crypt_op_to_32(const struct crypt_op *from, struct crypt_op32 *to)
|
|
{
|
|
|
|
CP(*from, *to, ses);
|
|
CP(*from, *to, op);
|
|
CP(*from, *to, flags);
|
|
CP(*from, *to, len);
|
|
PTROUT_CP(*from, *to, src);
|
|
PTROUT_CP(*from, *to, dst);
|
|
PTROUT_CP(*from, *to, mac);
|
|
PTROUT_CP(*from, *to, iv);
|
|
}
|
|
|
|
static void
|
|
crparam_from_32(const struct crparam32 *from, struct crparam *to)
|
|
{
|
|
|
|
PTRIN_CP(*from, *to, crp_p);
|
|
CP(*from, *to, crp_nbits);
|
|
}
|
|
|
|
static void
|
|
crparam_to_32(const struct crparam *from, struct crparam32 *to)
|
|
{
|
|
|
|
PTROUT_CP(*from, *to, crp_p);
|
|
CP(*from, *to, crp_nbits);
|
|
}
|
|
|
|
static void
|
|
crypt_kop_from_32(const struct crypt_kop32 *from, struct crypt_kop *to)
|
|
{
|
|
int i;
|
|
|
|
CP(*from, *to, crk_op);
|
|
CP(*from, *to, crk_status);
|
|
CP(*from, *to, crk_iparams);
|
|
CP(*from, *to, crk_oparams);
|
|
CP(*from, *to, crk_crid);
|
|
for (i = 0; i < CRK_MAXPARAM; i++)
|
|
crparam_from_32(&from->crk_param[i], &to->crk_param[i]);
|
|
}
|
|
|
|
static void
|
|
crypt_kop_to_32(const struct crypt_kop *from, struct crypt_kop32 *to)
|
|
{
|
|
int i;
|
|
|
|
CP(*from, *to, crk_op);
|
|
CP(*from, *to, crk_status);
|
|
CP(*from, *to, crk_iparams);
|
|
CP(*from, *to, crk_oparams);
|
|
CP(*from, *to, crk_crid);
|
|
for (i = 0; i < CRK_MAXPARAM; i++)
|
|
crparam_to_32(&from->crk_param[i], &to->crk_param[i]);
|
|
}
|
|
#endif
|
|
|
|
struct csession {
|
|
TAILQ_ENTRY(csession) next;
|
|
crypto_session_t cses;
|
|
volatile u_int refs;
|
|
u_int32_t ses;
|
|
struct mtx lock; /* for op submission */
|
|
|
|
struct enc_xform *txform;
|
|
int hashsize;
|
|
int ivsize;
|
|
int mode;
|
|
|
|
void *key;
|
|
void *mackey;
|
|
};
|
|
|
|
struct cryptop_data {
|
|
struct csession *cse;
|
|
|
|
char *buf;
|
|
char *obuf;
|
|
char *aad;
|
|
bool done;
|
|
};
|
|
|
|
struct fcrypt {
|
|
TAILQ_HEAD(csessionlist, csession) csessions;
|
|
int sesn;
|
|
struct mtx lock;
|
|
};
|
|
|
|
static bool use_outputbuffers;
|
|
SYSCTL_BOOL(_kern_crypto, OID_AUTO, cryptodev_use_output, CTLFLAG_RW,
|
|
&use_outputbuffers, 0,
|
|
"Use separate output buffers for /dev/crypto requests.");
|
|
|
|
static bool use_separate_aad;
|
|
SYSCTL_BOOL(_kern_crypto, OID_AUTO, cryptodev_separate_aad, CTLFLAG_RW,
|
|
&use_separate_aad, 0,
|
|
"Use separate AAD buffer for /dev/crypto requests.");
|
|
|
|
static int cryptof_ioctl(struct file *, u_long, void *,
|
|
struct ucred *, struct thread *);
|
|
static int cryptof_stat(struct file *, struct stat *,
|
|
struct ucred *, struct thread *);
|
|
static int cryptof_close(struct file *, struct thread *);
|
|
static int cryptof_fill_kinfo(struct file *, struct kinfo_file *,
|
|
struct filedesc *);
|
|
|
|
static struct fileops cryptofops = {
|
|
.fo_read = invfo_rdwr,
|
|
.fo_write = invfo_rdwr,
|
|
.fo_truncate = invfo_truncate,
|
|
.fo_ioctl = cryptof_ioctl,
|
|
.fo_poll = invfo_poll,
|
|
.fo_kqfilter = invfo_kqfilter,
|
|
.fo_stat = cryptof_stat,
|
|
.fo_close = cryptof_close,
|
|
.fo_chmod = invfo_chmod,
|
|
.fo_chown = invfo_chown,
|
|
.fo_sendfile = invfo_sendfile,
|
|
.fo_fill_kinfo = cryptof_fill_kinfo,
|
|
};
|
|
|
|
static struct csession *csefind(struct fcrypt *, u_int);
|
|
static bool csedelete(struct fcrypt *, u_int);
|
|
static struct csession *csecreate(struct fcrypt *, crypto_session_t,
|
|
struct crypto_session_params *, struct enc_xform *, void *,
|
|
struct auth_hash *, void *);
|
|
static void csefree(struct csession *);
|
|
|
|
static int cryptodev_op(struct csession *, struct crypt_op *,
|
|
struct ucred *, struct thread *td);
|
|
static int cryptodev_aead(struct csession *, struct crypt_aead *,
|
|
struct ucred *, struct thread *);
|
|
static int cryptodev_key(struct crypt_kop *);
|
|
static int cryptodev_find(struct crypt_find_op *);
|
|
|
|
/*
|
|
* Check a crypto identifier to see if it requested
|
|
* a software device/driver. This can be done either
|
|
* by device name/class or through search constraints.
|
|
*/
|
|
static int
|
|
checkforsoftware(int *cridp)
|
|
{
|
|
int crid;
|
|
|
|
crid = *cridp;
|
|
|
|
if (!crypto_devallowsoft) {
|
|
if (crid & CRYPTOCAP_F_SOFTWARE) {
|
|
if (crid & CRYPTOCAP_F_HARDWARE) {
|
|
*cridp = CRYPTOCAP_F_HARDWARE;
|
|
return 0;
|
|
}
|
|
return EINVAL;
|
|
}
|
|
if ((crid & CRYPTOCAP_F_HARDWARE) == 0 &&
|
|
(crypto_getcaps(crid) & CRYPTOCAP_F_HARDWARE) == 0)
|
|
return EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static int
|
|
cryptof_ioctl(
|
|
struct file *fp,
|
|
u_long cmd,
|
|
void *data,
|
|
struct ucred *active_cred,
|
|
struct thread *td)
|
|
{
|
|
#define SES2(p) ((struct session2_op *)p)
|
|
struct crypto_session_params csp;
|
|
struct fcrypt *fcr = fp->f_data;
|
|
struct csession *cse;
|
|
struct session_op *sop;
|
|
struct crypt_op *cop;
|
|
struct crypt_aead *caead;
|
|
struct enc_xform *txform = NULL;
|
|
struct auth_hash *thash = NULL;
|
|
void *key = NULL;
|
|
void *mackey = NULL;
|
|
struct crypt_kop *kop;
|
|
crypto_session_t cses;
|
|
u_int32_t ses;
|
|
int error = 0, crid;
|
|
#ifdef COMPAT_FREEBSD32
|
|
struct session2_op sopc;
|
|
struct crypt_op copc;
|
|
struct crypt_kop kopc;
|
|
#endif
|
|
|
|
switch (cmd) {
|
|
case CIOCGSESSION:
|
|
case CIOCGSESSION2:
|
|
#ifdef COMPAT_FREEBSD32
|
|
case CIOCGSESSION32:
|
|
case CIOCGSESSION232:
|
|
if (cmd == CIOCGSESSION32) {
|
|
session_op_from_32(data, (struct session_op *)&sopc);
|
|
sop = (struct session_op *)&sopc;
|
|
} else if (cmd == CIOCGSESSION232) {
|
|
session2_op_from_32(data, &sopc);
|
|
sop = (struct session_op *)&sopc;
|
|
} else
|
|
#endif
|
|
sop = (struct session_op *)data;
|
|
switch (sop->cipher) {
|
|
case 0:
|
|
break;
|
|
case CRYPTO_AES_CBC:
|
|
txform = &enc_xform_rijndael128;
|
|
break;
|
|
case CRYPTO_AES_XTS:
|
|
txform = &enc_xform_aes_xts;
|
|
break;
|
|
case CRYPTO_NULL_CBC:
|
|
txform = &enc_xform_null;
|
|
break;
|
|
case CRYPTO_CAMELLIA_CBC:
|
|
txform = &enc_xform_camellia;
|
|
break;
|
|
case CRYPTO_AES_ICM:
|
|
txform = &enc_xform_aes_icm;
|
|
break;
|
|
case CRYPTO_AES_NIST_GCM_16:
|
|
txform = &enc_xform_aes_nist_gcm;
|
|
break;
|
|
case CRYPTO_CHACHA20:
|
|
txform = &enc_xform_chacha20;
|
|
break;
|
|
case CRYPTO_AES_CCM_16:
|
|
txform = &enc_xform_ccm;
|
|
break;
|
|
|
|
default:
|
|
CRYPTDEB("invalid cipher");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
switch (sop->mac) {
|
|
case 0:
|
|
break;
|
|
case CRYPTO_POLY1305:
|
|
thash = &auth_hash_poly1305;
|
|
break;
|
|
case CRYPTO_SHA1_HMAC:
|
|
thash = &auth_hash_hmac_sha1;
|
|
break;
|
|
case CRYPTO_SHA2_224_HMAC:
|
|
thash = &auth_hash_hmac_sha2_224;
|
|
break;
|
|
case CRYPTO_SHA2_256_HMAC:
|
|
thash = &auth_hash_hmac_sha2_256;
|
|
break;
|
|
case CRYPTO_SHA2_384_HMAC:
|
|
thash = &auth_hash_hmac_sha2_384;
|
|
break;
|
|
case CRYPTO_SHA2_512_HMAC:
|
|
thash = &auth_hash_hmac_sha2_512;
|
|
break;
|
|
case CRYPTO_RIPEMD160_HMAC:
|
|
thash = &auth_hash_hmac_ripemd_160;
|
|
break;
|
|
#ifdef COMPAT_FREEBSD12
|
|
case CRYPTO_AES_128_NIST_GMAC:
|
|
case CRYPTO_AES_192_NIST_GMAC:
|
|
case CRYPTO_AES_256_NIST_GMAC:
|
|
/* Should always be paired with GCM. */
|
|
if (sop->cipher != CRYPTO_AES_NIST_GCM_16) {
|
|
CRYPTDEB("GMAC without GCM");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
return (EINVAL);
|
|
}
|
|
break;
|
|
#endif
|
|
case CRYPTO_AES_NIST_GMAC:
|
|
switch (sop->mackeylen * 8) {
|
|
case 128:
|
|
thash = &auth_hash_nist_gmac_aes_128;
|
|
break;
|
|
case 192:
|
|
thash = &auth_hash_nist_gmac_aes_192;
|
|
break;
|
|
case 256:
|
|
thash = &auth_hash_nist_gmac_aes_256;
|
|
break;
|
|
default:
|
|
CRYPTDEB("invalid GMAC key length");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
return (EINVAL);
|
|
}
|
|
break;
|
|
case CRYPTO_AES_CCM_CBC_MAC:
|
|
switch (sop->mackeylen) {
|
|
case 16:
|
|
thash = &auth_hash_ccm_cbc_mac_128;
|
|
break;
|
|
case 24:
|
|
thash = &auth_hash_ccm_cbc_mac_192;
|
|
break;
|
|
case 32:
|
|
thash = &auth_hash_ccm_cbc_mac_256;
|
|
break;
|
|
default:
|
|
CRYPTDEB("Invalid CBC MAC key size %d",
|
|
sop->keylen);
|
|
SDT_PROBE1(opencrypto, dev, ioctl,
|
|
error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
break;
|
|
case CRYPTO_SHA1:
|
|
thash = &auth_hash_sha1;
|
|
break;
|
|
case CRYPTO_SHA2_224:
|
|
thash = &auth_hash_sha2_224;
|
|
break;
|
|
case CRYPTO_SHA2_256:
|
|
thash = &auth_hash_sha2_256;
|
|
break;
|
|
case CRYPTO_SHA2_384:
|
|
thash = &auth_hash_sha2_384;
|
|
break;
|
|
case CRYPTO_SHA2_512:
|
|
thash = &auth_hash_sha2_512;
|
|
break;
|
|
|
|
case CRYPTO_NULL_HMAC:
|
|
thash = &auth_hash_null;
|
|
break;
|
|
|
|
case CRYPTO_BLAKE2B:
|
|
thash = &auth_hash_blake2b;
|
|
break;
|
|
case CRYPTO_BLAKE2S:
|
|
thash = &auth_hash_blake2s;
|
|
break;
|
|
|
|
default:
|
|
CRYPTDEB("invalid mac");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
if (txform == NULL && thash == NULL) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
memset(&csp, 0, sizeof(csp));
|
|
if (use_outputbuffers)
|
|
csp.csp_flags |= CSP_F_SEPARATE_OUTPUT;
|
|
|
|
if (sop->cipher == CRYPTO_AES_NIST_GCM_16) {
|
|
switch (sop->mac) {
|
|
#ifdef COMPAT_FREEBSD12
|
|
case CRYPTO_AES_128_NIST_GMAC:
|
|
case CRYPTO_AES_192_NIST_GMAC:
|
|
case CRYPTO_AES_256_NIST_GMAC:
|
|
if (sop->keylen != sop->mackeylen) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl,
|
|
error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
break;
|
|
#endif
|
|
case 0:
|
|
break;
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
return (EINVAL);
|
|
}
|
|
csp.csp_mode = CSP_MODE_AEAD;
|
|
} else if (sop->cipher == CRYPTO_AES_CCM_16) {
|
|
switch (sop->mac) {
|
|
#ifdef COMPAT_FREEBSD12
|
|
case CRYPTO_AES_CCM_CBC_MAC:
|
|
if (sop->keylen != sop->mackeylen) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl,
|
|
error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
thash = NULL;
|
|
break;
|
|
#endif
|
|
case 0:
|
|
break;
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
return (EINVAL);
|
|
}
|
|
csp.csp_mode = CSP_MODE_AEAD;
|
|
} else if (txform && thash)
|
|
csp.csp_mode = CSP_MODE_ETA;
|
|
else if (txform)
|
|
csp.csp_mode = CSP_MODE_CIPHER;
|
|
else
|
|
csp.csp_mode = CSP_MODE_DIGEST;
|
|
|
|
switch (csp.csp_mode) {
|
|
case CSP_MODE_AEAD:
|
|
case CSP_MODE_ETA:
|
|
if (use_separate_aad)
|
|
csp.csp_flags |= CSP_F_SEPARATE_AAD;
|
|
break;
|
|
}
|
|
|
|
if (txform) {
|
|
csp.csp_cipher_alg = txform->type;
|
|
csp.csp_cipher_klen = sop->keylen;
|
|
if (sop->keylen > txform->maxkey ||
|
|
sop->keylen < txform->minkey) {
|
|
CRYPTDEB("invalid cipher parameters");
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
key = malloc(csp.csp_cipher_klen, M_XDATA, M_WAITOK);
|
|
error = copyin(sop->key, key, csp.csp_cipher_klen);
|
|
if (error) {
|
|
CRYPTDEB("invalid key");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
goto bail;
|
|
}
|
|
csp.csp_cipher_key = key;
|
|
csp.csp_ivlen = txform->ivsize;
|
|
}
|
|
|
|
if (thash) {
|
|
csp.csp_auth_alg = thash->type;
|
|
csp.csp_auth_klen = sop->mackeylen;
|
|
if (sop->mackeylen > thash->keysize ||
|
|
sop->mackeylen < 0) {
|
|
CRYPTDEB("invalid mac key length");
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if (csp.csp_auth_klen) {
|
|
mackey = malloc(csp.csp_auth_klen, M_XDATA,
|
|
M_WAITOK);
|
|
error = copyin(sop->mackey, mackey,
|
|
csp.csp_auth_klen);
|
|
if (error) {
|
|
CRYPTDEB("invalid mac key");
|
|
SDT_PROBE1(opencrypto, dev, ioctl,
|
|
error, __LINE__);
|
|
goto bail;
|
|
}
|
|
csp.csp_auth_key = mackey;
|
|
}
|
|
|
|
if (csp.csp_auth_alg == CRYPTO_AES_NIST_GMAC)
|
|
csp.csp_ivlen = AES_GCM_IV_LEN;
|
|
if (csp.csp_auth_alg == CRYPTO_AES_CCM_CBC_MAC)
|
|
csp.csp_ivlen = AES_CCM_IV_LEN;
|
|
}
|
|
|
|
/* NB: CIOCGSESSION2 has the crid */
|
|
if (cmd == CIOCGSESSION2
|
|
#ifdef COMPAT_FREEBSD32
|
|
|| cmd == CIOCGSESSION232
|
|
#endif
|
|
) {
|
|
crid = SES2(sop)->crid;
|
|
error = checkforsoftware(&crid);
|
|
if (error) {
|
|
CRYPTDEB("checkforsoftware");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
goto bail;
|
|
}
|
|
} else
|
|
crid = CRYPTOCAP_F_HARDWARE;
|
|
error = crypto_newsession(&cses, &csp, crid);
|
|
if (error) {
|
|
CRYPTDEB("crypto_newsession");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
cse = csecreate(fcr, cses, &csp, txform, key, thash, mackey);
|
|
|
|
if (cse == NULL) {
|
|
crypto_freesession(cses);
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
CRYPTDEB("csecreate");
|
|
goto bail;
|
|
}
|
|
sop->ses = cse->ses;
|
|
if (cmd == CIOCGSESSION2
|
|
#ifdef COMPAT_FREEBSD32
|
|
|| cmd == CIOCGSESSION232
|
|
#endif
|
|
) {
|
|
/* return hardware/driver id */
|
|
SES2(sop)->crid = crypto_ses2hid(cse->cses);
|
|
}
|
|
bail:
|
|
if (error) {
|
|
free(key, M_XDATA);
|
|
free(mackey, M_XDATA);
|
|
}
|
|
#ifdef COMPAT_FREEBSD32
|
|
else {
|
|
if (cmd == CIOCGSESSION32)
|
|
session_op_to_32(sop, data);
|
|
else if (cmd == CIOCGSESSION232)
|
|
session2_op_to_32((struct session2_op *)sop,
|
|
data);
|
|
}
|
|
#endif
|
|
break;
|
|
case CIOCFSESSION:
|
|
ses = *(u_int32_t *)data;
|
|
if (!csedelete(fcr, ses)) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
break;
|
|
case CIOCCRYPT:
|
|
#ifdef COMPAT_FREEBSD32
|
|
case CIOCCRYPT32:
|
|
if (cmd == CIOCCRYPT32) {
|
|
cop = &copc;
|
|
crypt_op_from_32(data, cop);
|
|
} else
|
|
#endif
|
|
cop = (struct crypt_op *)data;
|
|
cse = csefind(fcr, cop->ses);
|
|
if (cse == NULL) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
error = cryptodev_op(cse, cop, active_cred, td);
|
|
csefree(cse);
|
|
#ifdef COMPAT_FREEBSD32
|
|
if (error == 0 && cmd == CIOCCRYPT32)
|
|
crypt_op_to_32(cop, data);
|
|
#endif
|
|
break;
|
|
case CIOCKEY:
|
|
case CIOCKEY2:
|
|
#ifdef COMPAT_FREEBSD32
|
|
case CIOCKEY32:
|
|
case CIOCKEY232:
|
|
#endif
|
|
if (!crypto_userasymcrypto) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EPERM); /* XXX compat? */
|
|
}
|
|
#ifdef COMPAT_FREEBSD32
|
|
if (cmd == CIOCKEY32 || cmd == CIOCKEY232) {
|
|
kop = &kopc;
|
|
crypt_kop_from_32(data, kop);
|
|
} else
|
|
#endif
|
|
kop = (struct crypt_kop *)data;
|
|
if (cmd == CIOCKEY
|
|
#ifdef COMPAT_FREEBSD32
|
|
|| cmd == CIOCKEY32
|
|
#endif
|
|
) {
|
|
/* NB: crypto core enforces s/w driver use */
|
|
kop->crk_crid =
|
|
CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE;
|
|
}
|
|
mtx_lock(&Giant);
|
|
error = cryptodev_key(kop);
|
|
mtx_unlock(&Giant);
|
|
#ifdef COMPAT_FREEBSD32
|
|
if (cmd == CIOCKEY32 || cmd == CIOCKEY232)
|
|
crypt_kop_to_32(kop, data);
|
|
#endif
|
|
break;
|
|
case CIOCASYMFEAT:
|
|
if (!crypto_userasymcrypto) {
|
|
/*
|
|
* NB: if user asym crypto operations are
|
|
* not permitted return "no algorithms"
|
|
* so well-behaved applications will just
|
|
* fallback to doing them in software.
|
|
*/
|
|
*(int *)data = 0;
|
|
} else {
|
|
error = crypto_getfeat((int *)data);
|
|
if (error)
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
}
|
|
break;
|
|
case CIOCFINDDEV:
|
|
error = cryptodev_find((struct crypt_find_op *)data);
|
|
break;
|
|
case CIOCCRYPTAEAD:
|
|
caead = (struct crypt_aead *)data;
|
|
cse = csefind(fcr, caead->ses);
|
|
if (cse == NULL) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
error = cryptodev_aead(cse, caead, active_cred, td);
|
|
csefree(cse);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
break;
|
|
}
|
|
return (error);
|
|
#undef SES2
|
|
}
|
|
|
|
static int cryptodev_cb(struct cryptop *);
|
|
|
|
static struct cryptop_data *
|
|
cod_alloc(struct csession *cse, size_t aad_len, size_t len, struct thread *td)
|
|
{
|
|
struct cryptop_data *cod;
|
|
|
|
cod = malloc(sizeof(struct cryptop_data), M_XDATA, M_WAITOK | M_ZERO);
|
|
|
|
cod->cse = cse;
|
|
if (crypto_get_params(cse->cses)->csp_flags & CSP_F_SEPARATE_AAD) {
|
|
if (aad_len != 0)
|
|
cod->aad = malloc(aad_len, M_XDATA, M_WAITOK);
|
|
cod->buf = malloc(len, M_XDATA, M_WAITOK);
|
|
} else
|
|
cod->buf = malloc(aad_len + len, M_XDATA, M_WAITOK);
|
|
if (crypto_get_params(cse->cses)->csp_flags & CSP_F_SEPARATE_OUTPUT)
|
|
cod->obuf = malloc(len, M_XDATA, M_WAITOK);
|
|
return (cod);
|
|
}
|
|
|
|
static void
|
|
cod_free(struct cryptop_data *cod)
|
|
{
|
|
|
|
free(cod->aad, M_XDATA);
|
|
free(cod->obuf, M_XDATA);
|
|
free(cod->buf, M_XDATA);
|
|
free(cod, M_XDATA);
|
|
}
|
|
|
|
static int
|
|
cryptodev_op(
|
|
struct csession *cse,
|
|
struct crypt_op *cop,
|
|
struct ucred *active_cred,
|
|
struct thread *td)
|
|
{
|
|
struct cryptop_data *cod = NULL;
|
|
struct cryptop *crp = NULL;
|
|
int error;
|
|
|
|
if (cop->len > 256*1024-4) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (E2BIG);
|
|
}
|
|
|
|
if (cse->txform) {
|
|
if (cop->len == 0 || (cop->len % cse->txform->blocksize) != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
|
|
if (cop->mac && cse->hashsize == 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* The COP_F_CIPHER_FIRST flag predates explicit session
|
|
* modes, but the only way it was used was for EtA so allow it
|
|
* as long as it is consistent with EtA.
|
|
*/
|
|
if (cop->flags & COP_F_CIPHER_FIRST) {
|
|
if (cop->op != COP_ENCRYPT) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
|
|
cod = cod_alloc(cse, 0, cop->len + cse->hashsize, td);
|
|
|
|
crp = crypto_getreq(cse->cses, M_WAITOK);
|
|
|
|
error = copyin(cop->src, cod->buf, cop->len);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
crp->crp_payload_start = 0;
|
|
crp->crp_payload_length = cop->len;
|
|
if (cse->hashsize)
|
|
crp->crp_digest_start = cop->len;
|
|
|
|
switch (cse->mode) {
|
|
case CSP_MODE_COMPRESS:
|
|
switch (cop->op) {
|
|
case COP_ENCRYPT:
|
|
crp->crp_op = CRYPTO_OP_COMPRESS;
|
|
break;
|
|
case COP_DECRYPT:
|
|
crp->crp_op = CRYPTO_OP_DECOMPRESS;
|
|
break;
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
break;
|
|
case CSP_MODE_CIPHER:
|
|
switch (cop->op) {
|
|
case COP_ENCRYPT:
|
|
crp->crp_op = CRYPTO_OP_ENCRYPT;
|
|
break;
|
|
case COP_DECRYPT:
|
|
crp->crp_op = CRYPTO_OP_DECRYPT;
|
|
break;
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
break;
|
|
case CSP_MODE_DIGEST:
|
|
switch (cop->op) {
|
|
case 0:
|
|
case COP_ENCRYPT:
|
|
case COP_DECRYPT:
|
|
crp->crp_op = CRYPTO_OP_COMPUTE_DIGEST;
|
|
if (cod->obuf != NULL)
|
|
crp->crp_digest_start = 0;
|
|
break;
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
break;
|
|
case CSP_MODE_ETA:
|
|
switch (cop->op) {
|
|
case COP_ENCRYPT:
|
|
crp->crp_op = CRYPTO_OP_ENCRYPT |
|
|
CRYPTO_OP_COMPUTE_DIGEST;
|
|
break;
|
|
case COP_DECRYPT:
|
|
crp->crp_op = CRYPTO_OP_DECRYPT |
|
|
CRYPTO_OP_VERIFY_DIGEST;
|
|
break;
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
break;
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
|
|
crp->crp_flags = CRYPTO_F_CBIMM | (cop->flags & COP_F_BATCH);
|
|
crypto_use_buf(crp, cod->buf, cop->len + cse->hashsize);
|
|
if (cod->obuf)
|
|
crypto_use_output_buf(crp, cod->obuf, cop->len + cse->hashsize);
|
|
crp->crp_callback = cryptodev_cb;
|
|
crp->crp_opaque = cod;
|
|
|
|
if (cop->iv) {
|
|
if (cse->ivsize == 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
error = copyin(cop->iv, crp->crp_iv, cse->ivsize);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
crp->crp_flags |= CRYPTO_F_IV_SEPARATE;
|
|
} else if (cse->ivsize != 0) {
|
|
crp->crp_iv_start = 0;
|
|
crp->crp_payload_start += cse->ivsize;
|
|
crp->crp_payload_length -= cse->ivsize;
|
|
cop->dst += cse->ivsize;
|
|
}
|
|
|
|
if (cop->mac != NULL && crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) {
|
|
error = copyin(cop->mac, cod->buf + crp->crp_digest_start,
|
|
cse->hashsize);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
}
|
|
again:
|
|
/*
|
|
* Let the dispatch run unlocked, then, interlock against the
|
|
* callback before checking if the operation completed and going
|
|
* to sleep. This insures drivers don't inherit our lock which
|
|
* results in a lock order reversal between crypto_dispatch forced
|
|
* entry and the crypto_done callback into us.
|
|
*/
|
|
error = crypto_dispatch(crp);
|
|
if (error != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
mtx_lock(&cse->lock);
|
|
while (!cod->done)
|
|
mtx_sleep(cod, &cse->lock, PWAIT, "crydev", 0);
|
|
mtx_unlock(&cse->lock);
|
|
|
|
if (crp->crp_etype == EAGAIN) {
|
|
crp->crp_etype = 0;
|
|
crp->crp_flags &= ~CRYPTO_F_DONE;
|
|
cod->done = false;
|
|
goto again;
|
|
}
|
|
|
|
if (crp->crp_etype != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = crp->crp_etype;
|
|
goto bail;
|
|
}
|
|
|
|
if (cop->dst != NULL) {
|
|
error = copyout(cod->obuf != NULL ? cod->obuf :
|
|
cod->buf + crp->crp_payload_start, cop->dst,
|
|
crp->crp_payload_length);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
}
|
|
|
|
if (cop->mac != NULL && (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) == 0) {
|
|
error = copyout((cod->obuf != NULL ? cod->obuf : cod->buf) +
|
|
crp->crp_digest_start, cop->mac, cse->hashsize);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
}
|
|
|
|
bail:
|
|
crypto_freereq(crp);
|
|
cod_free(cod);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
cryptodev_aead(
|
|
struct csession *cse,
|
|
struct crypt_aead *caead,
|
|
struct ucred *active_cred,
|
|
struct thread *td)
|
|
{
|
|
struct cryptop_data *cod = NULL;
|
|
struct cryptop *crp = NULL;
|
|
int error;
|
|
|
|
if (caead->len > 256*1024-4 || caead->aadlen > 256*1024-4) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (E2BIG);
|
|
}
|
|
|
|
if (cse->txform == NULL || cse->hashsize == 0 || caead->tag == NULL ||
|
|
(caead->len % cse->txform->blocksize) != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* The COP_F_CIPHER_FIRST flag predates explicit session
|
|
* modes, but the only way it was used was for EtA so allow it
|
|
* as long as it is consistent with EtA.
|
|
*/
|
|
if (caead->flags & COP_F_CIPHER_FIRST) {
|
|
if (caead->op != COP_ENCRYPT) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
|
|
cod = cod_alloc(cse, caead->aadlen, caead->len + cse->hashsize, td);
|
|
|
|
crp = crypto_getreq(cse->cses, M_WAITOK);
|
|
|
|
if (cod->aad != NULL)
|
|
error = copyin(caead->aad, cod->aad, caead->aadlen);
|
|
else
|
|
error = copyin(caead->aad, cod->buf, caead->aadlen);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
crp->crp_aad = cod->aad;
|
|
crp->crp_aad_start = 0;
|
|
crp->crp_aad_length = caead->aadlen;
|
|
|
|
if (cod->aad != NULL)
|
|
crp->crp_payload_start = 0;
|
|
else
|
|
crp->crp_payload_start = caead->aadlen;
|
|
error = copyin(caead->src, cod->buf + crp->crp_payload_start,
|
|
caead->len);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
crp->crp_payload_length = caead->len;
|
|
if (caead->op == COP_ENCRYPT && cod->obuf != NULL)
|
|
crp->crp_digest_start = crp->crp_payload_output_start +
|
|
caead->len;
|
|
else
|
|
crp->crp_digest_start = crp->crp_payload_start + caead->len;
|
|
|
|
switch (cse->mode) {
|
|
case CSP_MODE_AEAD:
|
|
case CSP_MODE_ETA:
|
|
switch (caead->op) {
|
|
case COP_ENCRYPT:
|
|
crp->crp_op = CRYPTO_OP_ENCRYPT |
|
|
CRYPTO_OP_COMPUTE_DIGEST;
|
|
break;
|
|
case COP_DECRYPT:
|
|
crp->crp_op = CRYPTO_OP_DECRYPT |
|
|
CRYPTO_OP_VERIFY_DIGEST;
|
|
break;
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
break;
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
|
|
crp->crp_flags = CRYPTO_F_CBIMM | (caead->flags & COP_F_BATCH);
|
|
crypto_use_buf(crp, cod->buf, crp->crp_payload_start + caead->len +
|
|
cse->hashsize);
|
|
if (cod->obuf != NULL)
|
|
crypto_use_output_buf(crp, cod->obuf, caead->len +
|
|
cse->hashsize);
|
|
crp->crp_callback = cryptodev_cb;
|
|
crp->crp_opaque = cod;
|
|
|
|
if (caead->iv) {
|
|
/*
|
|
* Permit a 16-byte IV for AES-XTS, but only use the
|
|
* first 8 bytes as a block number.
|
|
*/
|
|
if (cse->mode == CSP_MODE_ETA &&
|
|
caead->ivlen == AES_BLOCK_LEN &&
|
|
cse->ivsize == AES_XTS_IV_LEN)
|
|
caead->ivlen = AES_XTS_IV_LEN;
|
|
|
|
if (caead->ivlen != cse->ivsize) {
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
error = copyin(caead->iv, crp->crp_iv, cse->ivsize);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
crp->crp_flags |= CRYPTO_F_IV_SEPARATE;
|
|
} else {
|
|
crp->crp_iv_start = crp->crp_payload_start;
|
|
crp->crp_payload_start += cse->ivsize;
|
|
crp->crp_payload_length -= cse->ivsize;
|
|
caead->dst += cse->ivsize;
|
|
}
|
|
|
|
if (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) {
|
|
error = copyin(caead->tag, cod->buf + crp->crp_digest_start,
|
|
cse->hashsize);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
}
|
|
again:
|
|
/*
|
|
* Let the dispatch run unlocked, then, interlock against the
|
|
* callback before checking if the operation completed and going
|
|
* to sleep. This insures drivers don't inherit our lock which
|
|
* results in a lock order reversal between crypto_dispatch forced
|
|
* entry and the crypto_done callback into us.
|
|
*/
|
|
error = crypto_dispatch(crp);
|
|
if (error != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
mtx_lock(&cse->lock);
|
|
while (!cod->done)
|
|
mtx_sleep(cod, &cse->lock, PWAIT, "crydev", 0);
|
|
mtx_unlock(&cse->lock);
|
|
|
|
if (crp->crp_etype == EAGAIN) {
|
|
crp->crp_etype = 0;
|
|
crp->crp_flags &= ~CRYPTO_F_DONE;
|
|
cod->done = false;
|
|
goto again;
|
|
}
|
|
|
|
if (crp->crp_etype != 0) {
|
|
error = crp->crp_etype;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if (caead->dst != NULL) {
|
|
error = copyout(cod->obuf != NULL ? cod->obuf :
|
|
cod->buf + crp->crp_payload_start, caead->dst,
|
|
crp->crp_payload_length);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
}
|
|
|
|
if ((crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) == 0) {
|
|
error = copyout((cod->obuf != NULL ? cod->obuf : cod->buf) +
|
|
crp->crp_digest_start, caead->tag, cse->hashsize);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
}
|
|
|
|
bail:
|
|
crypto_freereq(crp);
|
|
cod_free(cod);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
cryptodev_cb(struct cryptop *crp)
|
|
{
|
|
struct cryptop_data *cod = crp->crp_opaque;
|
|
|
|
/*
|
|
* Lock to ensure the wakeup() is not missed by the loops
|
|
* waiting on cod->done in cryptodev_op() and
|
|
* cryptodev_aead().
|
|
*/
|
|
mtx_lock(&cod->cse->lock);
|
|
cod->done = true;
|
|
mtx_unlock(&cod->cse->lock);
|
|
wakeup(cod);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
cryptodevkey_cb(struct cryptkop *krp)
|
|
{
|
|
|
|
wakeup_one(krp);
|
|
}
|
|
|
|
static int
|
|
cryptodev_key(struct crypt_kop *kop)
|
|
{
|
|
struct cryptkop *krp = NULL;
|
|
int error = EINVAL;
|
|
int in, out, size, i;
|
|
|
|
if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EFBIG);
|
|
}
|
|
|
|
in = kop->crk_iparams;
|
|
out = kop->crk_oparams;
|
|
switch (kop->crk_op) {
|
|
case CRK_MOD_EXP:
|
|
if (in == 3 && out == 1)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
case CRK_MOD_EXP_CRT:
|
|
if (in == 6 && out == 1)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
case CRK_DSA_SIGN:
|
|
if (in == 5 && out == 2)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
case CRK_DSA_VERIFY:
|
|
if (in == 7 && out == 0)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
case CRK_DH_COMPUTE_KEY:
|
|
if (in == 3 && out == 1)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK|M_ZERO);
|
|
if (!krp) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (ENOMEM);
|
|
}
|
|
krp->krp_op = kop->crk_op;
|
|
krp->krp_status = kop->crk_status;
|
|
krp->krp_iparams = kop->crk_iparams;
|
|
krp->krp_oparams = kop->crk_oparams;
|
|
krp->krp_crid = kop->crk_crid;
|
|
krp->krp_status = 0;
|
|
krp->krp_callback = cryptodevkey_cb;
|
|
|
|
for (i = 0; i < CRK_MAXPARAM; i++) {
|
|
if (kop->crk_param[i].crp_nbits > 65536) {
|
|
/* Limit is the same as in OpenBSD */
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits;
|
|
}
|
|
for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) {
|
|
size = (krp->krp_param[i].crp_nbits + 7) / 8;
|
|
if (size == 0)
|
|
continue;
|
|
krp->krp_param[i].crp_p = malloc(size, M_XDATA, M_WAITOK);
|
|
if (i >= krp->krp_iparams)
|
|
continue;
|
|
error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
error = crypto_kdispatch(krp);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
error = tsleep(krp, PSOCK, "crydev", 0);
|
|
if (error) {
|
|
/* XXX can this happen? if so, how do we recover? */
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
|
|
kop->crk_crid = krp->krp_hid; /* device that did the work */
|
|
if (krp->krp_status != 0) {
|
|
error = krp->krp_status;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
|
|
for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) {
|
|
size = (krp->krp_param[i].crp_nbits + 7) / 8;
|
|
if (size == 0)
|
|
continue;
|
|
error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
fail:
|
|
if (krp) {
|
|
kop->crk_status = krp->krp_status;
|
|
for (i = 0; i < CRK_MAXPARAM; i++) {
|
|
if (krp->krp_param[i].crp_p)
|
|
free(krp->krp_param[i].crp_p, M_XDATA);
|
|
}
|
|
free(krp, M_XDATA);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
cryptodev_find(struct crypt_find_op *find)
|
|
{
|
|
device_t dev;
|
|
size_t fnlen = sizeof find->name;
|
|
|
|
if (find->crid != -1) {
|
|
dev = crypto_find_device_byhid(find->crid);
|
|
if (dev == NULL)
|
|
return (ENOENT);
|
|
strncpy(find->name, device_get_nameunit(dev), fnlen);
|
|
find->name[fnlen - 1] = '\x0';
|
|
} else {
|
|
find->name[fnlen - 1] = '\x0';
|
|
find->crid = crypto_find_driver(find->name);
|
|
if (find->crid == -1)
|
|
return (ENOENT);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static int
|
|
cryptof_stat(
|
|
struct file *fp,
|
|
struct stat *sb,
|
|
struct ucred *active_cred,
|
|
struct thread *td)
|
|
{
|
|
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static int
|
|
cryptof_close(struct file *fp, struct thread *td)
|
|
{
|
|
struct fcrypt *fcr = fp->f_data;
|
|
struct csession *cse;
|
|
|
|
while ((cse = TAILQ_FIRST(&fcr->csessions))) {
|
|
TAILQ_REMOVE(&fcr->csessions, cse, next);
|
|
KASSERT(cse->refs == 1,
|
|
("%s: crypto session %p with %d refs", __func__, cse,
|
|
cse->refs));
|
|
csefree(cse);
|
|
}
|
|
free(fcr, M_XDATA);
|
|
fp->f_data = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
cryptof_fill_kinfo(struct file *fp, struct kinfo_file *kif, struct filedesc *fdp)
|
|
{
|
|
|
|
kif->kf_type = KF_TYPE_CRYPTO;
|
|
return (0);
|
|
}
|
|
|
|
static struct csession *
|
|
csefind(struct fcrypt *fcr, u_int ses)
|
|
{
|
|
struct csession *cse;
|
|
|
|
mtx_lock(&fcr->lock);
|
|
TAILQ_FOREACH(cse, &fcr->csessions, next) {
|
|
if (cse->ses == ses) {
|
|
refcount_acquire(&cse->refs);
|
|
mtx_unlock(&fcr->lock);
|
|
return (cse);
|
|
}
|
|
}
|
|
mtx_unlock(&fcr->lock);
|
|
return (NULL);
|
|
}
|
|
|
|
static bool
|
|
csedelete(struct fcrypt *fcr, u_int ses)
|
|
{
|
|
struct csession *cse;
|
|
|
|
mtx_lock(&fcr->lock);
|
|
TAILQ_FOREACH(cse, &fcr->csessions, next) {
|
|
if (cse->ses == ses) {
|
|
TAILQ_REMOVE(&fcr->csessions, cse, next);
|
|
mtx_unlock(&fcr->lock);
|
|
csefree(cse);
|
|
return (true);
|
|
}
|
|
}
|
|
mtx_unlock(&fcr->lock);
|
|
return (false);
|
|
}
|
|
|
|
struct csession *
|
|
csecreate(struct fcrypt *fcr, crypto_session_t cses,
|
|
struct crypto_session_params *csp, struct enc_xform *txform,
|
|
void *key, struct auth_hash *thash, void *mackey)
|
|
{
|
|
struct csession *cse;
|
|
|
|
cse = malloc(sizeof(struct csession), M_XDATA, M_NOWAIT | M_ZERO);
|
|
if (cse == NULL)
|
|
return NULL;
|
|
mtx_init(&cse->lock, "cryptodev", "crypto session lock", MTX_DEF);
|
|
refcount_init(&cse->refs, 1);
|
|
cse->key = key;
|
|
cse->mackey = mackey;
|
|
cse->mode = csp->csp_mode;
|
|
cse->cses = cses;
|
|
cse->txform = txform;
|
|
if (thash != NULL)
|
|
cse->hashsize = thash->hashsize;
|
|
else if (csp->csp_cipher_alg == CRYPTO_AES_NIST_GCM_16)
|
|
cse->hashsize = AES_GMAC_HASH_LEN;
|
|
else if (csp->csp_cipher_alg == CRYPTO_AES_CCM_16)
|
|
cse->hashsize = AES_CBC_MAC_HASH_LEN;
|
|
cse->ivsize = csp->csp_ivlen;
|
|
mtx_lock(&fcr->lock);
|
|
TAILQ_INSERT_TAIL(&fcr->csessions, cse, next);
|
|
cse->ses = fcr->sesn++;
|
|
mtx_unlock(&fcr->lock);
|
|
return (cse);
|
|
}
|
|
|
|
static void
|
|
csefree(struct csession *cse)
|
|
{
|
|
|
|
if (!refcount_release(&cse->refs))
|
|
return;
|
|
crypto_freesession(cse->cses);
|
|
mtx_destroy(&cse->lock);
|
|
if (cse->key)
|
|
free(cse->key, M_XDATA);
|
|
if (cse->mackey)
|
|
free(cse->mackey, M_XDATA);
|
|
free(cse, M_XDATA);
|
|
}
|
|
|
|
static int
|
|
cryptoioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
|
|
{
|
|
struct file *f;
|
|
struct fcrypt *fcr;
|
|
int fd, error;
|
|
|
|
switch (cmd) {
|
|
case CRIOGET:
|
|
error = falloc_noinstall(td, &f);
|
|
if (error)
|
|
break;
|
|
|
|
fcr = malloc(sizeof(struct fcrypt), M_XDATA, M_WAITOK | M_ZERO);
|
|
TAILQ_INIT(&fcr->csessions);
|
|
mtx_init(&fcr->lock, "fcrypt", NULL, MTX_DEF);
|
|
|
|
finit(f, FREAD | FWRITE, DTYPE_CRYPTO, fcr, &cryptofops);
|
|
error = finstall(td, f, &fd, 0, NULL);
|
|
if (error) {
|
|
mtx_destroy(&fcr->lock);
|
|
free(fcr, M_XDATA);
|
|
} else
|
|
*(uint32_t *)data = fd;
|
|
fdrop(f, td);
|
|
break;
|
|
case CRIOFINDDEV:
|
|
error = cryptodev_find((struct crypt_find_op *)data);
|
|
break;
|
|
case CRIOASYMFEAT:
|
|
error = crypto_getfeat((int *)data);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static struct cdevsw crypto_cdevsw = {
|
|
.d_version = D_VERSION,
|
|
.d_ioctl = cryptoioctl,
|
|
.d_name = "crypto",
|
|
};
|
|
static struct cdev *crypto_dev;
|
|
|
|
/*
|
|
* Initialization code, both for static and dynamic loading.
|
|
*/
|
|
static int
|
|
cryptodev_modevent(module_t mod, int type, void *unused)
|
|
{
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
if (bootverbose)
|
|
printf("crypto: <crypto device>\n");
|
|
crypto_dev = make_dev(&crypto_cdevsw, 0,
|
|
UID_ROOT, GID_WHEEL, 0666,
|
|
"crypto");
|
|
return 0;
|
|
case MOD_UNLOAD:
|
|
/*XXX disallow if active sessions */
|
|
destroy_dev(crypto_dev);
|
|
return 0;
|
|
}
|
|
return EINVAL;
|
|
}
|
|
|
|
static moduledata_t cryptodev_mod = {
|
|
"cryptodev",
|
|
cryptodev_modevent,
|
|
0
|
|
};
|
|
MODULE_VERSION(cryptodev, 1);
|
|
DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
|
|
MODULE_DEPEND(cryptodev, crypto, 1, 1, 1);
|
|
MODULE_DEPEND(cryptodev, zlib, 1, 1, 1);
|