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1419 lines
33 KiB
1419 lines
33 KiB
/*
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* Copyright (c) 2002 Bob Beck <beck@openbsd.org>
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* Copyright (c) 2002 Theo de Raadt
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* Copyright (c) 2002 Markus Friedl
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <openssl/objects.h>
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#include <openssl/engine.h>
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#include <openssl/evp.h>
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#include <openssl/bn.h>
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#if (defined(__unix__) || defined(unix)) && !defined(USG) && \
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(defined(OpenBSD) || defined(__FreeBSD__))
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#include <sys/param.h>
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# if (OpenBSD >= 200112) || ((__FreeBSD_version >= 470101 && __FreeBSD_version < 500000) || __FreeBSD_version >= 500041)
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# define HAVE_CRYPTODEV
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# endif
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# if (OpenBSD >= 200110)
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# define HAVE_SYSLOG_R
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# endif
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#endif
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#ifndef HAVE_CRYPTODEV
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void
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ENGINE_load_cryptodev(void)
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{
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/* This is a NOP on platforms without /dev/crypto */
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return;
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}
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#else
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#include <sys/types.h>
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#include <crypto/cryptodev.h>
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#include <crypto/dh/dh.h>
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#include <crypto/dsa/dsa.h>
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#include <crypto/err/err.h>
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#include <crypto/rsa/rsa.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <syslog.h>
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#include <errno.h>
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#include <string.h>
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struct dev_crypto_state {
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struct session_op d_sess;
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int d_fd;
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#ifdef USE_CRYPTODEV_DIGESTS
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char dummy_mac_key[HASH_MAX_LEN];
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unsigned char digest_res[HASH_MAX_LEN];
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char *mac_data;
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int mac_len;
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int copy;
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#endif
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};
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static u_int32_t cryptodev_asymfeat = 0;
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static int get_asym_dev_crypto(void);
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static int open_dev_crypto(void);
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static int get_dev_crypto(void);
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static int get_cryptodev_ciphers(const int **cnids);
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#ifdef USE_CRYPTODEV_DIGESTS
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static int get_cryptodev_digests(const int **cnids);
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#endif
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static int cryptodev_usable_ciphers(const int **nids);
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static int cryptodev_usable_digests(const int **nids);
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static int cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl);
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static int cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc);
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static int cryptodev_cleanup(EVP_CIPHER_CTX *ctx);
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static int cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
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const int **nids, int nid);
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static int cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
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const int **nids, int nid);
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static int bn2crparam(const BIGNUM *a, struct crparam *crp);
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static int crparam2bn(struct crparam *crp, BIGNUM *a);
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static void zapparams(struct crypt_kop *kop);
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static int cryptodev_asym(struct crypt_kop *kop, int rlen, BIGNUM *r,
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int slen, BIGNUM *s);
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static int cryptodev_bn_mod_exp(BIGNUM *r, const BIGNUM *a,
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const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
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static int cryptodev_rsa_nocrt_mod_exp(BIGNUM *r0, const BIGNUM *I,
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RSA *rsa, BN_CTX *ctx);
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static int cryptodev_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
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static int cryptodev_dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a,
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const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
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static int cryptodev_dsa_dsa_mod_exp(DSA *dsa, BIGNUM *t1, BIGNUM *g,
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BIGNUM *u1, BIGNUM *pub_key, BIGNUM *u2, BIGNUM *p,
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BN_CTX *ctx, BN_MONT_CTX *mont);
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static DSA_SIG *cryptodev_dsa_do_sign(const unsigned char *dgst,
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int dlen, DSA *dsa);
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static int cryptodev_dsa_verify(const unsigned char *dgst, int dgst_len,
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DSA_SIG *sig, DSA *dsa);
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static int cryptodev_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
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const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
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BN_MONT_CTX *m_ctx);
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static int cryptodev_dh_compute_key(unsigned char *key,
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const BIGNUM *pub_key, DH *dh);
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static int cryptodev_ctrl(ENGINE *e, int cmd, long i, void *p,
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void (*f)(void));
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void ENGINE_load_cryptodev(void);
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static const ENGINE_CMD_DEFN cryptodev_defns[] = {
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{ 0, NULL, NULL, 0 }
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};
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static struct {
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int id;
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int nid;
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int ivmax;
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int keylen;
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} ciphers[] = {
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{ CRYPTO_ARC4, NID_rc4, 0, 16, },
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{ CRYPTO_DES_CBC, NID_des_cbc, 8, 8, },
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{ CRYPTO_3DES_CBC, NID_des_ede3_cbc, 8, 24, },
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{ CRYPTO_AES_CBC, NID_aes_128_cbc, 16, 16, },
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{ CRYPTO_AES_CBC, NID_aes_192_cbc, 16, 24, },
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{ CRYPTO_AES_CBC, NID_aes_256_cbc, 16, 32, },
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{ CRYPTO_BLF_CBC, NID_bf_cbc, 8, 16, },
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{ CRYPTO_CAST_CBC, NID_cast5_cbc, 8, 16, },
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{ CRYPTO_SKIPJACK_CBC, NID_undef, 0, 0, },
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{ 0, NID_undef, 0, 0, },
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};
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#ifdef USE_CRYPTODEV_DIGESTS
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static struct {
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int id;
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int nid;
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int keylen;
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} digests[] = {
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{ CRYPTO_MD5_HMAC, NID_hmacWithMD5, 16},
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{ CRYPTO_SHA1_HMAC, NID_hmacWithSHA1, 20},
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{ CRYPTO_RIPEMD160_HMAC, NID_ripemd160, 16/*?*/},
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{ CRYPTO_MD5_KPDK, NID_undef, 0},
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{ CRYPTO_SHA1_KPDK, NID_undef, 0},
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{ CRYPTO_MD5, NID_md5, 16},
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{ CRYPTO_SHA1, NID_sha1, 20},
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{ 0, NID_undef, 0},
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};
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#endif
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/*
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* Return a fd if /dev/crypto seems usable, 0 otherwise.
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*/
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static int
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open_dev_crypto(void)
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{
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static int fd = -1;
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if (fd == -1) {
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if ((fd = open("/dev/crypto", O_RDWR, 0)) == -1)
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return (-1);
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/* close on exec */
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if (fcntl(fd, F_SETFD, 1) == -1) {
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close(fd);
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fd = -1;
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return (-1);
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}
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}
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return (fd);
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}
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static int
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get_dev_crypto(void)
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{
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int fd, retfd;
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if ((fd = open_dev_crypto()) == -1)
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return (-1);
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if (ioctl(fd, CRIOGET, &retfd) == -1)
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return (-1);
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/* close on exec */
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if (fcntl(retfd, F_SETFD, 1) == -1) {
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close(retfd);
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return (-1);
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}
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return (retfd);
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}
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/* Caching version for asym operations */
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static int
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get_asym_dev_crypto(void)
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{
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static int fd = -1;
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if (fd == -1)
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fd = get_dev_crypto();
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return fd;
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}
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/*
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* Find out what ciphers /dev/crypto will let us have a session for.
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* XXX note, that some of these openssl doesn't deal with yet!
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* returning them here is harmless, as long as we return NULL
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* when asked for a handler in the cryptodev_engine_ciphers routine
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*/
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static int
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get_cryptodev_ciphers(const int **cnids)
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{
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static int nids[CRYPTO_ALGORITHM_MAX];
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struct session_op sess;
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int fd, i, count = 0;
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if ((fd = get_dev_crypto()) < 0) {
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*cnids = NULL;
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return (0);
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}
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memset(&sess, 0, sizeof(sess));
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sess.key = (caddr_t)"123456789abcdefghijklmno";
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for (i = 0; ciphers[i].id && count < CRYPTO_ALGORITHM_MAX; i++) {
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if (ciphers[i].nid == NID_undef)
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continue;
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sess.cipher = ciphers[i].id;
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sess.keylen = ciphers[i].keylen;
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sess.mac = 0;
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if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
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ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
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nids[count++] = ciphers[i].nid;
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}
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close(fd);
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if (count > 0)
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*cnids = nids;
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else
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*cnids = NULL;
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return (count);
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}
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#ifdef USE_CRYPTODEV_DIGESTS
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/*
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* Find out what digests /dev/crypto will let us have a session for.
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* XXX note, that some of these openssl doesn't deal with yet!
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* returning them here is harmless, as long as we return NULL
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* when asked for a handler in the cryptodev_engine_digests routine
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*/
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static int
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get_cryptodev_digests(const int **cnids)
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{
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static int nids[CRYPTO_ALGORITHM_MAX];
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struct session_op sess;
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int fd, i, count = 0;
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if ((fd = get_dev_crypto()) < 0) {
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*cnids = NULL;
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return (0);
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}
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memset(&sess, 0, sizeof(sess));
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sess.mackey = (caddr_t)"123456789abcdefghijklmno";
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for (i = 0; digests[i].id && count < CRYPTO_ALGORITHM_MAX; i++) {
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if (digests[i].nid == NID_undef)
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continue;
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sess.mac = digests[i].id;
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sess.mackeylen = digests[i].keylen;
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sess.cipher = 0;
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if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
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ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
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nids[count++] = digests[i].nid;
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}
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close(fd);
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if (count > 0)
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*cnids = nids;
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else
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*cnids = NULL;
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return (count);
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}
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#endif /* 0 */
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/*
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* Find the useable ciphers|digests from dev/crypto - this is the first
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* thing called by the engine init crud which determines what it
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* can use for ciphers from this engine. We want to return
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* only what we can do, anythine else is handled by software.
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*
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* If we can't initialize the device to do anything useful for
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* any reason, we want to return a NULL array, and 0 length,
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* which forces everything to be done is software. By putting
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* the initalization of the device in here, we ensure we can
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* use this engine as the default, and if for whatever reason
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* /dev/crypto won't do what we want it will just be done in
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* software
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*
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* This can (should) be greatly expanded to perhaps take into
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* account speed of the device, and what we want to do.
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* (although the disabling of particular alg's could be controlled
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* by the device driver with sysctl's.) - this is where we
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* want most of the decisions made about what we actually want
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* to use from /dev/crypto.
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*/
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static int
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cryptodev_usable_ciphers(const int **nids)
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{
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return (get_cryptodev_ciphers(nids));
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}
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static int
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cryptodev_usable_digests(const int **nids)
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{
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#ifdef USE_CRYPTODEV_DIGESTS
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return (get_cryptodev_digests(nids));
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#else
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/*
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* XXXX just disable all digests for now, because it sucks.
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* we need a better way to decide this - i.e. I may not
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* want digests on slow cards like hifn on fast machines,
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* but might want them on slow or loaded machines, etc.
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* will also want them when using crypto cards that don't
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* suck moose gonads - would be nice to be able to decide something
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* as reasonable default without having hackery that's card dependent.
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* of course, the default should probably be just do everything,
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* with perhaps a sysctl to turn algoritms off (or have them off
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* by default) on cards that generally suck like the hifn.
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*/
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*nids = NULL;
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return (0);
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#endif
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}
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static int
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cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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struct crypt_op cryp;
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struct dev_crypto_state *state = ctx->cipher_data;
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struct session_op *sess = &state->d_sess;
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const void *iiv;
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unsigned char save_iv[EVP_MAX_IV_LENGTH];
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if (state->d_fd < 0)
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return (0);
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if (!inl)
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return (1);
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if ((inl % ctx->cipher->block_size) != 0)
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return (0);
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memset(&cryp, 0, sizeof(cryp));
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cryp.ses = sess->ses;
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cryp.flags = 0;
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cryp.len = inl;
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cryp.src = (caddr_t) in;
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cryp.dst = (caddr_t) out;
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cryp.mac = 0;
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cryp.op = ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
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if (ctx->cipher->iv_len) {
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cryp.iv = (caddr_t) ctx->iv;
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if (!ctx->encrypt) {
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iiv = in + inl - ctx->cipher->iv_len;
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memcpy(save_iv, iiv, ctx->cipher->iv_len);
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}
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} else
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cryp.iv = NULL;
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|
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if (ioctl(state->d_fd, CIOCCRYPT, &cryp) == -1) {
|
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/* XXX need better errror handling
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* this can fail for a number of different reasons.
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*/
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return (0);
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}
|
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|
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if (ctx->cipher->iv_len) {
|
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if (ctx->encrypt)
|
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iiv = out + inl - ctx->cipher->iv_len;
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else
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iiv = save_iv;
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memcpy(ctx->iv, iiv, ctx->cipher->iv_len);
|
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}
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return (1);
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}
|
|
|
|
static int
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cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
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const unsigned char *iv, int enc)
|
|
{
|
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struct dev_crypto_state *state = ctx->cipher_data;
|
|
struct session_op *sess = &state->d_sess;
|
|
int cipher = -1, i;
|
|
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for (i = 0; ciphers[i].id; i++)
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if (ctx->cipher->nid == ciphers[i].nid &&
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ctx->cipher->iv_len <= ciphers[i].ivmax &&
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ctx->key_len == ciphers[i].keylen) {
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cipher = ciphers[i].id;
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break;
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|
}
|
|
|
|
if (!ciphers[i].id) {
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state->d_fd = -1;
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|
return (0);
|
|
}
|
|
|
|
memset(sess, 0, sizeof(struct session_op));
|
|
|
|
if ((state->d_fd = get_dev_crypto()) < 0)
|
|
return (0);
|
|
|
|
sess->key = (caddr_t)key;
|
|
sess->keylen = ctx->key_len;
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|
sess->cipher = cipher;
|
|
|
|
if (ioctl(state->d_fd, CIOCGSESSION, sess) == -1) {
|
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close(state->d_fd);
|
|
state->d_fd = -1;
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return (0);
|
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}
|
|
return (1);
|
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}
|
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|
|
/*
|
|
* free anything we allocated earlier when initting a
|
|
* session, and close the session.
|
|
*/
|
|
static int
|
|
cryptodev_cleanup(EVP_CIPHER_CTX *ctx)
|
|
{
|
|
int ret = 0;
|
|
struct dev_crypto_state *state = ctx->cipher_data;
|
|
struct session_op *sess = &state->d_sess;
|
|
|
|
if (state->d_fd < 0)
|
|
return (0);
|
|
|
|
/* XXX if this ioctl fails, someting's wrong. the invoker
|
|
* may have called us with a bogus ctx, or we could
|
|
* have a device that for whatever reason just doesn't
|
|
* want to play ball - it's not clear what's right
|
|
* here - should this be an error? should it just
|
|
* increase a counter, hmm. For right now, we return
|
|
* 0 - I don't believe that to be "right". we could
|
|
* call the gorpy openssl lib error handlers that
|
|
* print messages to users of the library. hmm..
|
|
*/
|
|
|
|
if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) == -1) {
|
|
ret = 0;
|
|
} else {
|
|
ret = 1;
|
|
}
|
|
close(state->d_fd);
|
|
state->d_fd = -1;
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* libcrypto EVP stuff - this is how we get wired to EVP so the engine
|
|
* gets called when libcrypto requests a cipher NID.
|
|
*/
|
|
|
|
/* RC4 */
|
|
const EVP_CIPHER cryptodev_rc4 = {
|
|
NID_rc4,
|
|
1, 16, 0,
|
|
EVP_CIPH_VARIABLE_LENGTH,
|
|
cryptodev_init_key,
|
|
cryptodev_cipher,
|
|
cryptodev_cleanup,
|
|
sizeof(struct dev_crypto_state),
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
/* DES CBC EVP */
|
|
const EVP_CIPHER cryptodev_des_cbc = {
|
|
NID_des_cbc,
|
|
8, 8, 8,
|
|
EVP_CIPH_CBC_MODE,
|
|
cryptodev_init_key,
|
|
cryptodev_cipher,
|
|
cryptodev_cleanup,
|
|
sizeof(struct dev_crypto_state),
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
NULL
|
|
};
|
|
|
|
/* 3DES CBC EVP */
|
|
const EVP_CIPHER cryptodev_3des_cbc = {
|
|
NID_des_ede3_cbc,
|
|
8, 24, 8,
|
|
EVP_CIPH_CBC_MODE,
|
|
cryptodev_init_key,
|
|
cryptodev_cipher,
|
|
cryptodev_cleanup,
|
|
sizeof(struct dev_crypto_state),
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
NULL
|
|
};
|
|
|
|
const EVP_CIPHER cryptodev_bf_cbc = {
|
|
NID_bf_cbc,
|
|
8, 16, 8,
|
|
EVP_CIPH_CBC_MODE,
|
|
cryptodev_init_key,
|
|
cryptodev_cipher,
|
|
cryptodev_cleanup,
|
|
sizeof(struct dev_crypto_state),
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
NULL
|
|
};
|
|
|
|
const EVP_CIPHER cryptodev_cast_cbc = {
|
|
NID_cast5_cbc,
|
|
8, 16, 8,
|
|
EVP_CIPH_CBC_MODE,
|
|
cryptodev_init_key,
|
|
cryptodev_cipher,
|
|
cryptodev_cleanup,
|
|
sizeof(struct dev_crypto_state),
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
NULL
|
|
};
|
|
|
|
const EVP_CIPHER cryptodev_aes_cbc = {
|
|
NID_aes_128_cbc,
|
|
16, 16, 16,
|
|
EVP_CIPH_CBC_MODE,
|
|
cryptodev_init_key,
|
|
cryptodev_cipher,
|
|
cryptodev_cleanup,
|
|
sizeof(struct dev_crypto_state),
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
NULL
|
|
};
|
|
|
|
const EVP_CIPHER cryptodev_aes_192_cbc = {
|
|
NID_aes_192_cbc,
|
|
16, 24, 16,
|
|
EVP_CIPH_CBC_MODE,
|
|
cryptodev_init_key,
|
|
cryptodev_cipher,
|
|
cryptodev_cleanup,
|
|
sizeof(struct dev_crypto_state),
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
NULL
|
|
};
|
|
|
|
const EVP_CIPHER cryptodev_aes_256_cbc = {
|
|
NID_aes_256_cbc,
|
|
16, 32, 16,
|
|
EVP_CIPH_CBC_MODE,
|
|
cryptodev_init_key,
|
|
cryptodev_cipher,
|
|
cryptodev_cleanup,
|
|
sizeof(struct dev_crypto_state),
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
NULL
|
|
};
|
|
|
|
/*
|
|
* Registered by the ENGINE when used to find out how to deal with
|
|
* a particular NID in the ENGINE. this says what we'll do at the
|
|
* top level - note, that list is restricted by what we answer with
|
|
*/
|
|
static int
|
|
cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
|
|
const int **nids, int nid)
|
|
{
|
|
if (!cipher)
|
|
return (cryptodev_usable_ciphers(nids));
|
|
|
|
switch (nid) {
|
|
case NID_rc4:
|
|
*cipher = &cryptodev_rc4;
|
|
break;
|
|
case NID_des_ede3_cbc:
|
|
*cipher = &cryptodev_3des_cbc;
|
|
break;
|
|
case NID_des_cbc:
|
|
*cipher = &cryptodev_des_cbc;
|
|
break;
|
|
case NID_bf_cbc:
|
|
*cipher = &cryptodev_bf_cbc;
|
|
break;
|
|
case NID_cast5_cbc:
|
|
*cipher = &cryptodev_cast_cbc;
|
|
break;
|
|
case NID_aes_128_cbc:
|
|
*cipher = &cryptodev_aes_cbc;
|
|
break;
|
|
case NID_aes_192_cbc:
|
|
*cipher = &cryptodev_aes_192_cbc;
|
|
break;
|
|
case NID_aes_256_cbc:
|
|
*cipher = &cryptodev_aes_256_cbc;
|
|
break;
|
|
default:
|
|
*cipher = NULL;
|
|
break;
|
|
}
|
|
return (*cipher != NULL);
|
|
}
|
|
|
|
|
|
#ifdef USE_CRYPTODEV_DIGESTS
|
|
|
|
/* convert digest type to cryptodev */
|
|
static int
|
|
digest_nid_to_cryptodev(int nid)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; digests[i].id; i++)
|
|
if (digests[i].nid == nid)
|
|
return (digests[i].id);
|
|
return (0);
|
|
}
|
|
|
|
|
|
static int
|
|
digest_key_length(int nid)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; digests[i].id; i++)
|
|
if (digests[i].nid == nid)
|
|
return digests[i].keylen;
|
|
return (0);
|
|
}
|
|
|
|
|
|
static int cryptodev_digest_init(EVP_MD_CTX *ctx)
|
|
{
|
|
struct dev_crypto_state *state = ctx->md_data;
|
|
struct session_op *sess = &state->d_sess;
|
|
int digest;
|
|
|
|
if ((digest = digest_nid_to_cryptodev(ctx->digest->type)) == NID_undef){
|
|
printf("cryptodev_digest_init: Can't get digest \n");
|
|
return (0);
|
|
}
|
|
|
|
memset(state, 0, sizeof(struct dev_crypto_state));
|
|
|
|
if ((state->d_fd = get_dev_crypto()) < 0) {
|
|
printf("cryptodev_digest_init: Can't get Dev \n");
|
|
return (0);
|
|
}
|
|
|
|
sess->mackey = state->dummy_mac_key;
|
|
sess->mackeylen = digest_key_length(ctx->digest->type);
|
|
sess->mac = digest;
|
|
|
|
if (ioctl(state->d_fd, CIOCGSESSION, sess) < 0) {
|
|
close(state->d_fd);
|
|
state->d_fd = -1;
|
|
printf("cryptodev_digest_init: Open session failed\n");
|
|
return (0);
|
|
}
|
|
|
|
return (1);
|
|
}
|
|
|
|
static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data,
|
|
size_t count)
|
|
{
|
|
struct crypt_op cryp;
|
|
struct dev_crypto_state *state = ctx->md_data;
|
|
struct session_op *sess = &state->d_sess;
|
|
|
|
if (!data || state->d_fd < 0) {
|
|
printf("cryptodev_digest_update: illegal inputs \n");
|
|
return (0);
|
|
}
|
|
|
|
if (!count) {
|
|
return (0);
|
|
}
|
|
|
|
if (!(ctx->flags & EVP_MD_CTX_FLAG_ONESHOT)) {
|
|
/* if application doesn't support one buffer */
|
|
state->mac_data = OPENSSL_realloc(state->mac_data, state->mac_len + count);
|
|
|
|
if (!state->mac_data) {
|
|
printf("cryptodev_digest_update: realloc failed\n");
|
|
return (0);
|
|
}
|
|
|
|
memcpy(state->mac_data + state->mac_len, data, count);
|
|
state->mac_len += count;
|
|
|
|
return (1);
|
|
}
|
|
|
|
memset(&cryp, 0, sizeof(cryp));
|
|
|
|
cryp.ses = sess->ses;
|
|
cryp.flags = 0;
|
|
cryp.len = count;
|
|
cryp.src = (caddr_t) data;
|
|
cryp.dst = NULL;
|
|
cryp.mac = (caddr_t) state->digest_res;
|
|
if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
|
|
printf("cryptodev_digest_update: digest failed\n");
|
|
return (0);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
|
|
static int cryptodev_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
{
|
|
struct crypt_op cryp;
|
|
struct dev_crypto_state *state = ctx->md_data;
|
|
struct session_op *sess = &state->d_sess;
|
|
|
|
int ret = 1;
|
|
|
|
if (!md || state->d_fd < 0) {
|
|
printf("cryptodev_digest_final: illegal input\n");
|
|
return(0);
|
|
}
|
|
|
|
if (! (ctx->flags & EVP_MD_CTX_FLAG_ONESHOT) ) {
|
|
/* if application doesn't support one buffer */
|
|
memset(&cryp, 0, sizeof(cryp));
|
|
|
|
cryp.ses = sess->ses;
|
|
cryp.flags = 0;
|
|
cryp.len = state->mac_len;
|
|
cryp.src = state->mac_data;
|
|
cryp.dst = NULL;
|
|
cryp.mac = (caddr_t)md;
|
|
|
|
if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
|
|
printf("cryptodev_digest_final: digest failed\n");
|
|
return (0);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
memcpy(md, state->digest_res, ctx->digest->md_size);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
|
|
static int cryptodev_digest_cleanup(EVP_MD_CTX *ctx)
|
|
{
|
|
int ret = 1;
|
|
struct dev_crypto_state *state = ctx->md_data;
|
|
struct session_op *sess = &state->d_sess;
|
|
|
|
if (state->d_fd < 0) {
|
|
printf("cryptodev_digest_cleanup: illegal input\n");
|
|
return (0);
|
|
}
|
|
|
|
if (state->mac_data) {
|
|
OPENSSL_free(state->mac_data);
|
|
state->mac_data = NULL;
|
|
state->mac_len = 0;
|
|
}
|
|
|
|
if (state->copy)
|
|
return 1;
|
|
|
|
if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) < 0) {
|
|
printf("cryptodev_digest_cleanup: failed to close session\n");
|
|
ret = 0;
|
|
} else {
|
|
ret = 1;
|
|
}
|
|
close(state->d_fd);
|
|
state->d_fd = -1;
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static int cryptodev_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from)
|
|
{
|
|
struct dev_crypto_state *fstate = from->md_data;
|
|
struct dev_crypto_state *dstate = to->md_data;
|
|
|
|
memcpy(dstate, fstate, sizeof(struct dev_crypto_state));
|
|
|
|
if (fstate->mac_len != 0) {
|
|
dstate->mac_data = OPENSSL_malloc(fstate->mac_len);
|
|
memcpy(dstate->mac_data, fstate->mac_data, fstate->mac_len);
|
|
}
|
|
|
|
dstate->copy = 1;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
const EVP_MD cryptodev_sha1 = {
|
|
NID_sha1,
|
|
NID_undef,
|
|
SHA_DIGEST_LENGTH,
|
|
EVP_MD_FLAG_ONESHOT,
|
|
cryptodev_digest_init,
|
|
cryptodev_digest_update,
|
|
cryptodev_digest_final,
|
|
cryptodev_digest_copy,
|
|
cryptodev_digest_cleanup,
|
|
EVP_PKEY_NULL_method,
|
|
SHA_CBLOCK,
|
|
sizeof(struct dev_crypto_state),
|
|
};
|
|
|
|
const EVP_MD cryptodev_md5 = {
|
|
NID_md5,
|
|
NID_undef,
|
|
16 /* MD5_DIGEST_LENGTH */,
|
|
EVP_MD_FLAG_ONESHOT,
|
|
cryptodev_digest_init,
|
|
cryptodev_digest_update,
|
|
cryptodev_digest_final,
|
|
cryptodev_digest_copy,
|
|
cryptodev_digest_cleanup,
|
|
EVP_PKEY_NULL_method,
|
|
64 /* MD5_CBLOCK */,
|
|
sizeof(struct dev_crypto_state),
|
|
};
|
|
|
|
#endif /* USE_CRYPTODEV_DIGESTS */
|
|
|
|
|
|
static int
|
|
cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
|
|
const int **nids, int nid)
|
|
{
|
|
if (!digest)
|
|
return (cryptodev_usable_digests(nids));
|
|
|
|
switch (nid) {
|
|
#ifdef USE_CRYPTODEV_DIGESTS
|
|
case NID_md5:
|
|
*digest = &cryptodev_md5;
|
|
break;
|
|
case NID_sha1:
|
|
*digest = &cryptodev_sha1;
|
|
break;
|
|
default:
|
|
#endif /* USE_CRYPTODEV_DIGESTS */
|
|
*digest = NULL;
|
|
break;
|
|
}
|
|
return (*digest != NULL);
|
|
}
|
|
|
|
/*
|
|
* Convert a BIGNUM to the representation that /dev/crypto needs.
|
|
* Upon completion of use, the caller is responsible for freeing
|
|
* crp->crp_p.
|
|
*/
|
|
static int
|
|
bn2crparam(const BIGNUM *a, struct crparam *crp)
|
|
{
|
|
int i, j, k;
|
|
ssize_t bytes, bits;
|
|
u_char *b;
|
|
|
|
crp->crp_p = NULL;
|
|
crp->crp_nbits = 0;
|
|
|
|
bits = BN_num_bits(a);
|
|
bytes = (bits + 7) / 8;
|
|
|
|
b = malloc(bytes);
|
|
if (b == NULL)
|
|
return (1);
|
|
memset(b, 0, bytes);
|
|
|
|
crp->crp_p = (caddr_t) b;
|
|
crp->crp_nbits = bits;
|
|
|
|
for (i = 0, j = 0; i < a->top; i++) {
|
|
for (k = 0; k < BN_BITS2 / 8; k++) {
|
|
if ((j + k) >= bytes)
|
|
return (0);
|
|
b[j + k] = a->d[i] >> (k * 8);
|
|
}
|
|
j += BN_BITS2 / 8;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/* Convert a /dev/crypto parameter to a BIGNUM */
|
|
static int
|
|
crparam2bn(struct crparam *crp, BIGNUM *a)
|
|
{
|
|
u_int8_t *pd;
|
|
int i, bytes;
|
|
|
|
bytes = (crp->crp_nbits + 7) / 8;
|
|
|
|
if (bytes == 0)
|
|
return (-1);
|
|
|
|
if ((pd = (u_int8_t *) malloc(bytes)) == NULL)
|
|
return (-1);
|
|
|
|
for (i = 0; i < bytes; i++)
|
|
pd[i] = crp->crp_p[bytes - i - 1];
|
|
|
|
BN_bin2bn(pd, bytes, a);
|
|
free(pd);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
zapparams(struct crypt_kop *kop)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < kop->crk_iparams + kop->crk_oparams; i++) {
|
|
if (kop->crk_param[i].crp_p)
|
|
free(kop->crk_param[i].crp_p);
|
|
kop->crk_param[i].crp_p = NULL;
|
|
kop->crk_param[i].crp_nbits = 0;
|
|
}
|
|
}
|
|
|
|
static int
|
|
cryptodev_asym(struct crypt_kop *kop, int rlen, BIGNUM *r, int slen, BIGNUM *s)
|
|
{
|
|
int fd, ret = -1;
|
|
|
|
if ((fd = get_asym_dev_crypto()) < 0)
|
|
return (ret);
|
|
|
|
if (r) {
|
|
kop->crk_param[kop->crk_iparams].crp_p = calloc(rlen, sizeof(char));
|
|
kop->crk_param[kop->crk_iparams].crp_nbits = rlen * 8;
|
|
kop->crk_oparams++;
|
|
}
|
|
if (s) {
|
|
kop->crk_param[kop->crk_iparams+1].crp_p = calloc(slen, sizeof(char));
|
|
kop->crk_param[kop->crk_iparams+1].crp_nbits = slen * 8;
|
|
kop->crk_oparams++;
|
|
}
|
|
|
|
if (ioctl(fd, CIOCKEY, kop) == 0) {
|
|
if (r)
|
|
crparam2bn(&kop->crk_param[kop->crk_iparams], r);
|
|
if (s)
|
|
crparam2bn(&kop->crk_param[kop->crk_iparams+1], s);
|
|
ret = 0;
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
cryptodev_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
|
|
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
|
|
{
|
|
struct crypt_kop kop;
|
|
int ret = 1;
|
|
|
|
/* Currently, we know we can do mod exp iff we can do any
|
|
* asymmetric operations at all.
|
|
*/
|
|
if (cryptodev_asymfeat == 0) {
|
|
ret = BN_mod_exp(r, a, p, m, ctx);
|
|
return (ret);
|
|
}
|
|
|
|
memset(&kop, 0, sizeof kop);
|
|
kop.crk_op = CRK_MOD_EXP;
|
|
|
|
/* inputs: a^p % m */
|
|
if (bn2crparam(a, &kop.crk_param[0]))
|
|
goto err;
|
|
if (bn2crparam(p, &kop.crk_param[1]))
|
|
goto err;
|
|
if (bn2crparam(m, &kop.crk_param[2]))
|
|
goto err;
|
|
kop.crk_iparams = 3;
|
|
|
|
if (cryptodev_asym(&kop, BN_num_bytes(m), r, 0, NULL)) {
|
|
const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
|
|
printf("OCF asym process failed, Running in software\n");
|
|
ret = meth->bn_mod_exp(r, a, p, m, ctx, in_mont);
|
|
|
|
} else if (ECANCELED == kop.crk_status) {
|
|
const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
|
|
printf("OCF hardware operation cancelled. Running in Software\n");
|
|
ret = meth->bn_mod_exp(r, a, p, m, ctx, in_mont);
|
|
}
|
|
/* else cryptodev operation worked ok ==> ret = 1*/
|
|
|
|
err:
|
|
zapparams(&kop);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
cryptodev_rsa_nocrt_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
|
|
{
|
|
int r;
|
|
ctx = BN_CTX_new();
|
|
r = cryptodev_bn_mod_exp(r0, I, rsa->d, rsa->n, ctx, NULL);
|
|
BN_CTX_free(ctx);
|
|
return (r);
|
|
}
|
|
|
|
static int
|
|
cryptodev_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
|
|
{
|
|
struct crypt_kop kop;
|
|
int ret = 1;
|
|
|
|
if (!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) {
|
|
/* XXX 0 means failure?? */
|
|
return (0);
|
|
}
|
|
|
|
memset(&kop, 0, sizeof kop);
|
|
kop.crk_op = CRK_MOD_EXP_CRT;
|
|
/* inputs: rsa->p rsa->q I rsa->dmp1 rsa->dmq1 rsa->iqmp */
|
|
if (bn2crparam(rsa->p, &kop.crk_param[0]))
|
|
goto err;
|
|
if (bn2crparam(rsa->q, &kop.crk_param[1]))
|
|
goto err;
|
|
if (bn2crparam(I, &kop.crk_param[2]))
|
|
goto err;
|
|
if (bn2crparam(rsa->dmp1, &kop.crk_param[3]))
|
|
goto err;
|
|
if (bn2crparam(rsa->dmq1, &kop.crk_param[4]))
|
|
goto err;
|
|
if (bn2crparam(rsa->iqmp, &kop.crk_param[5]))
|
|
goto err;
|
|
kop.crk_iparams = 6;
|
|
|
|
if (cryptodev_asym(&kop, BN_num_bytes(rsa->n), r0, 0, NULL)) {
|
|
const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
|
|
printf("OCF asym process failed, running in Software\n");
|
|
ret = (*meth->rsa_mod_exp)(r0, I, rsa, ctx);
|
|
|
|
} else if (ECANCELED == kop.crk_status) {
|
|
const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
|
|
printf("OCF hardware operation cancelled. Running in Software\n");
|
|
ret = (*meth->rsa_mod_exp)(r0, I, rsa, ctx);
|
|
}
|
|
/* else cryptodev operation worked ok ==> ret = 1*/
|
|
|
|
err:
|
|
zapparams(&kop);
|
|
return (ret);
|
|
}
|
|
|
|
static RSA_METHOD cryptodev_rsa = {
|
|
"cryptodev RSA method",
|
|
NULL, /* rsa_pub_enc */
|
|
NULL, /* rsa_pub_dec */
|
|
NULL, /* rsa_priv_enc */
|
|
NULL, /* rsa_priv_dec */
|
|
NULL,
|
|
NULL,
|
|
NULL, /* init */
|
|
NULL, /* finish */
|
|
0, /* flags */
|
|
NULL, /* app_data */
|
|
NULL, /* rsa_sign */
|
|
NULL /* rsa_verify */
|
|
};
|
|
|
|
static int
|
|
cryptodev_dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
|
|
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
|
|
{
|
|
return (cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx));
|
|
}
|
|
|
|
static int
|
|
cryptodev_dsa_dsa_mod_exp(DSA *dsa, BIGNUM *t1, BIGNUM *g,
|
|
BIGNUM *u1, BIGNUM *pub_key, BIGNUM *u2, BIGNUM *p,
|
|
BN_CTX *ctx, BN_MONT_CTX *mont)
|
|
{
|
|
BIGNUM t2;
|
|
int ret = 0;
|
|
|
|
BN_init(&t2);
|
|
|
|
/* v = ( g^u1 * y^u2 mod p ) mod q */
|
|
/* let t1 = g ^ u1 mod p */
|
|
ret = 0;
|
|
|
|
if (!dsa->meth->bn_mod_exp(dsa,t1,dsa->g,u1,dsa->p,ctx,mont))
|
|
goto err;
|
|
|
|
/* let t2 = y ^ u2 mod p */
|
|
if (!dsa->meth->bn_mod_exp(dsa,&t2,dsa->pub_key,u2,dsa->p,ctx,mont))
|
|
goto err;
|
|
/* let u1 = t1 * t2 mod p */
|
|
if (!BN_mod_mul(u1,t1,&t2,dsa->p,ctx))
|
|
goto err;
|
|
|
|
BN_copy(t1,u1);
|
|
|
|
ret = 1;
|
|
err:
|
|
BN_free(&t2);
|
|
return(ret);
|
|
}
|
|
|
|
static DSA_SIG *
|
|
cryptodev_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
|
|
{
|
|
struct crypt_kop kop;
|
|
BIGNUM *r = NULL, *s = NULL;
|
|
DSA_SIG *dsaret = NULL;
|
|
|
|
if ((r = BN_new()) == NULL)
|
|
goto err;
|
|
if ((s = BN_new()) == NULL) {
|
|
BN_free(r);
|
|
goto err;
|
|
}
|
|
|
|
memset(&kop, 0, sizeof kop);
|
|
kop.crk_op = CRK_DSA_SIGN;
|
|
|
|
/* inputs: dgst dsa->p dsa->q dsa->g dsa->priv_key */
|
|
kop.crk_param[0].crp_p = (caddr_t)dgst;
|
|
kop.crk_param[0].crp_nbits = dlen * 8;
|
|
if (bn2crparam(dsa->p, &kop.crk_param[1]))
|
|
goto err;
|
|
if (bn2crparam(dsa->q, &kop.crk_param[2]))
|
|
goto err;
|
|
if (bn2crparam(dsa->g, &kop.crk_param[3]))
|
|
goto err;
|
|
if (bn2crparam(dsa->priv_key, &kop.crk_param[4]))
|
|
goto err;
|
|
kop.crk_iparams = 5;
|
|
|
|
if (cryptodev_asym(&kop, BN_num_bytes(dsa->q), r,
|
|
BN_num_bytes(dsa->q), s) == 0) {
|
|
dsaret = DSA_SIG_new();
|
|
dsaret->r = r;
|
|
dsaret->s = s;
|
|
} else {
|
|
const DSA_METHOD *meth = DSA_OpenSSL();
|
|
BN_free(r);
|
|
BN_free(s);
|
|
dsaret = (meth->dsa_do_sign)(dgst, dlen, dsa);
|
|
}
|
|
err:
|
|
kop.crk_param[0].crp_p = NULL;
|
|
zapparams(&kop);
|
|
return (dsaret);
|
|
}
|
|
|
|
static int
|
|
cryptodev_dsa_verify(const unsigned char *dgst, int dlen,
|
|
DSA_SIG *sig, DSA *dsa)
|
|
{
|
|
struct crypt_kop kop;
|
|
int dsaret = 1;
|
|
|
|
memset(&kop, 0, sizeof kop);
|
|
kop.crk_op = CRK_DSA_VERIFY;
|
|
|
|
/* inputs: dgst dsa->p dsa->q dsa->g dsa->pub_key sig->r sig->s */
|
|
kop.crk_param[0].crp_p = (caddr_t)dgst;
|
|
kop.crk_param[0].crp_nbits = dlen * 8;
|
|
if (bn2crparam(dsa->p, &kop.crk_param[1]))
|
|
goto err;
|
|
if (bn2crparam(dsa->q, &kop.crk_param[2]))
|
|
goto err;
|
|
if (bn2crparam(dsa->g, &kop.crk_param[3]))
|
|
goto err;
|
|
if (bn2crparam(dsa->pub_key, &kop.crk_param[4]))
|
|
goto err;
|
|
if (bn2crparam(sig->r, &kop.crk_param[5]))
|
|
goto err;
|
|
if (bn2crparam(sig->s, &kop.crk_param[6]))
|
|
goto err;
|
|
kop.crk_iparams = 7;
|
|
|
|
if (cryptodev_asym(&kop, 0, NULL, 0, NULL) == 0) {
|
|
/*OCF success value is 0, if not zero, change dsaret to fail*/
|
|
if(0 != kop.crk_status) dsaret = 0;
|
|
} else {
|
|
const DSA_METHOD *meth = DSA_OpenSSL();
|
|
|
|
dsaret = (meth->dsa_do_verify)(dgst, dlen, sig, dsa);
|
|
}
|
|
err:
|
|
kop.crk_param[0].crp_p = NULL;
|
|
zapparams(&kop);
|
|
return (dsaret);
|
|
}
|
|
|
|
static DSA_METHOD cryptodev_dsa = {
|
|
"cryptodev DSA method",
|
|
NULL,
|
|
NULL, /* dsa_sign_setup */
|
|
NULL,
|
|
NULL, /* dsa_mod_exp */
|
|
NULL,
|
|
NULL, /* init */
|
|
NULL, /* finish */
|
|
0, /* flags */
|
|
NULL /* app_data */
|
|
};
|
|
|
|
static int
|
|
cryptodev_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
|
|
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
|
|
BN_MONT_CTX *m_ctx)
|
|
{
|
|
return (cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx));
|
|
}
|
|
|
|
static int
|
|
cryptodev_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh)
|
|
{
|
|
struct crypt_kop kop;
|
|
int dhret = 1;
|
|
int fd, keylen;
|
|
|
|
if ((fd = get_asym_dev_crypto()) < 0) {
|
|
const DH_METHOD *meth = DH_OpenSSL();
|
|
|
|
return ((meth->compute_key)(key, pub_key, dh));
|
|
}
|
|
|
|
keylen = BN_num_bits(dh->p);
|
|
|
|
memset(&kop, 0, sizeof kop);
|
|
kop.crk_op = CRK_DH_COMPUTE_KEY;
|
|
|
|
/* inputs: dh->priv_key pub_key dh->p key */
|
|
if (bn2crparam(dh->priv_key, &kop.crk_param[0]))
|
|
goto err;
|
|
if (bn2crparam(pub_key, &kop.crk_param[1]))
|
|
goto err;
|
|
if (bn2crparam(dh->p, &kop.crk_param[2]))
|
|
goto err;
|
|
kop.crk_iparams = 3;
|
|
|
|
kop.crk_param[3].crp_p = (caddr_t) key;
|
|
kop.crk_param[3].crp_nbits = keylen * 8;
|
|
kop.crk_oparams = 1;
|
|
|
|
if (ioctl(fd, CIOCKEY, &kop) == -1) {
|
|
const DH_METHOD *meth = DH_OpenSSL();
|
|
|
|
dhret = (meth->compute_key)(key, pub_key, dh);
|
|
}
|
|
err:
|
|
kop.crk_param[3].crp_p = NULL;
|
|
zapparams(&kop);
|
|
return (dhret);
|
|
}
|
|
|
|
static DH_METHOD cryptodev_dh = {
|
|
"cryptodev DH method",
|
|
NULL, /* cryptodev_dh_generate_key */
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
0, /* flags */
|
|
NULL /* app_data */
|
|
};
|
|
|
|
/*
|
|
* ctrl right now is just a wrapper that doesn't do much
|
|
* but I expect we'll want some options soon.
|
|
*/
|
|
static int
|
|
cryptodev_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
|
|
{
|
|
#ifdef HAVE_SYSLOG_R
|
|
struct syslog_data sd = SYSLOG_DATA_INIT;
|
|
#endif
|
|
|
|
switch (cmd) {
|
|
default:
|
|
#ifdef HAVE_SYSLOG_R
|
|
syslog_r(LOG_ERR, &sd,
|
|
"cryptodev_ctrl: unknown command %d", cmd);
|
|
#else
|
|
syslog(LOG_ERR, "cryptodev_ctrl: unknown command %d", cmd);
|
|
#endif
|
|
break;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
ENGINE_load_cryptodev(void)
|
|
{
|
|
ENGINE *engine = ENGINE_new();
|
|
int fd;
|
|
|
|
if (engine == NULL)
|
|
return;
|
|
if ((fd = get_dev_crypto()) < 0) {
|
|
ENGINE_free(engine);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* find out what asymmetric crypto algorithms we support
|
|
*/
|
|
if (ioctl(fd, CIOCASYMFEAT, &cryptodev_asymfeat) == -1) {
|
|
close(fd);
|
|
ENGINE_free(engine);
|
|
return;
|
|
}
|
|
close(fd);
|
|
|
|
if (!ENGINE_set_id(engine, "cryptodev") ||
|
|
!ENGINE_set_name(engine, "BSD cryptodev engine") ||
|
|
!ENGINE_set_ciphers(engine, cryptodev_engine_ciphers) ||
|
|
!ENGINE_set_digests(engine, cryptodev_engine_digests) ||
|
|
!ENGINE_set_ctrl_function(engine, cryptodev_ctrl) ||
|
|
!ENGINE_set_cmd_defns(engine, cryptodev_defns)) {
|
|
ENGINE_free(engine);
|
|
return;
|
|
}
|
|
|
|
if (ENGINE_set_RSA(engine, &cryptodev_rsa)) {
|
|
const RSA_METHOD *rsa_meth = RSA_PKCS1_SSLeay();
|
|
|
|
cryptodev_rsa.bn_mod_exp = rsa_meth->bn_mod_exp;
|
|
cryptodev_rsa.rsa_mod_exp = rsa_meth->rsa_mod_exp;
|
|
cryptodev_rsa.rsa_pub_enc = rsa_meth->rsa_pub_enc;
|
|
cryptodev_rsa.rsa_pub_dec = rsa_meth->rsa_pub_dec;
|
|
cryptodev_rsa.rsa_priv_enc = rsa_meth->rsa_priv_enc;
|
|
cryptodev_rsa.rsa_priv_dec = rsa_meth->rsa_priv_dec;
|
|
if (cryptodev_asymfeat & CRF_MOD_EXP) {
|
|
cryptodev_rsa.bn_mod_exp = cryptodev_bn_mod_exp;
|
|
if (cryptodev_asymfeat & CRF_MOD_EXP_CRT)
|
|
cryptodev_rsa.rsa_mod_exp =
|
|
cryptodev_rsa_mod_exp;
|
|
else
|
|
cryptodev_rsa.rsa_mod_exp =
|
|
cryptodev_rsa_nocrt_mod_exp;
|
|
}
|
|
}
|
|
|
|
if (ENGINE_set_DSA(engine, &cryptodev_dsa)) {
|
|
const DSA_METHOD *meth = DSA_OpenSSL();
|
|
|
|
memcpy(&cryptodev_dsa, meth, sizeof(DSA_METHOD));
|
|
if (cryptodev_asymfeat & CRF_DSA_SIGN)
|
|
cryptodev_dsa.dsa_do_sign = cryptodev_dsa_do_sign;
|
|
if (cryptodev_asymfeat & CRF_MOD_EXP) {
|
|
cryptodev_dsa.bn_mod_exp = cryptodev_dsa_bn_mod_exp;
|
|
cryptodev_dsa.dsa_mod_exp = cryptodev_dsa_dsa_mod_exp;
|
|
}
|
|
if (cryptodev_asymfeat & CRF_DSA_VERIFY)
|
|
cryptodev_dsa.dsa_do_verify = cryptodev_dsa_verify;
|
|
}
|
|
|
|
if (ENGINE_set_DH(engine, &cryptodev_dh)){
|
|
const DH_METHOD *dh_meth = DH_OpenSSL();
|
|
|
|
cryptodev_dh.generate_key = dh_meth->generate_key;
|
|
cryptodev_dh.compute_key = dh_meth->compute_key;
|
|
cryptodev_dh.bn_mod_exp = dh_meth->bn_mod_exp;
|
|
if (cryptodev_asymfeat & CRF_MOD_EXP) {
|
|
cryptodev_dh.bn_mod_exp = cryptodev_mod_exp_dh;
|
|
if (cryptodev_asymfeat & CRF_DH_COMPUTE_KEY)
|
|
cryptodev_dh.compute_key =
|
|
cryptodev_dh_compute_key;
|
|
}
|
|
}
|
|
|
|
ENGINE_add(engine);
|
|
ENGINE_free(engine);
|
|
ERR_clear_error();
|
|
}
|
|
|
|
#endif /* HAVE_CRYPTODEV */
|
|
|