openssl1.0/crypto/evp/openbsd_hw.c

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/* Written by Ben Laurie, 2001 */
/*
* Copyright (c) 2001 The OpenSSL Project. All rights reserved.
*
* 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. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS CONTRIBUTORS 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.
*/
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/rsa.h>
#include "evp_locl.h"
/*
* This stuff should now all be supported through
* crypto/engine/hw_openbsd_dev_crypto.c unless I botched it up
*/
static void *dummy = &dummy;
#if 0
/* check flag after OpenSSL headers to ensure make depend works */
# ifdef OPENSSL_OPENBSD_DEV_CRYPTO
# include <fcntl.h>
# include <stdio.h>
# include <errno.h>
# include <sys/ioctl.h>
# include <crypto/cryptodev.h>
# include <unistd.h>
# include <assert.h>
/* longest key supported in hardware */
# define MAX_HW_KEY 24
# define MAX_HW_IV 8
# define MD5_DIGEST_LENGTH 16
# define MD5_CBLOCK 64
static int fd;
static int dev_failed;
typedef struct session_op session_op;
# define CDATA(ctx) EVP_C_DATA(session_op,ctx)
static void err(const char *str)
{
fprintf(stderr, "%s: errno %d\n", str, errno);
}
static int dev_crypto_init(session_op *ses)
{
if (dev_failed)
return 0;
if (!fd) {
int cryptodev_fd;
if ((cryptodev_fd = open("/dev/crypto", O_RDWR, 0)) < 0) {
err("/dev/crypto");
dev_failed = 1;
return 0;
}
if (ioctl(cryptodev_fd, CRIOGET, &fd) == -1) {
err("CRIOGET failed");
close(cryptodev_fd);
dev_failed = 1;
return 0;
}
close(cryptodev_fd);
}
assert(ses);
memset(ses, '\0', sizeof(*ses));
return 1;
}
static int dev_crypto_cleanup(EVP_CIPHER_CTX *ctx)
{
if (ioctl(fd, CIOCFSESSION, &CDATA(ctx)->ses) == -1)
err("CIOCFSESSION failed");
OPENSSL_free(CDATA(ctx)->key);
return 1;
}
static int dev_crypto_init_key(EVP_CIPHER_CTX *ctx, int cipher,
const unsigned char *key, int klen)
{
if (!dev_crypto_init(CDATA(ctx)))
return 0;
CDATA(ctx)->key = OPENSSL_malloc(MAX_HW_KEY);
if (CDATA(ctx)->key == NULL {
err("CDATA(ctx)->key memory allocation failed");
return 0;
}
assert(ctx->cipher->iv_len <= MAX_HW_IV);
memcpy(CDATA(ctx)->key, key, klen);
CDATA(ctx)->cipher = cipher;
CDATA(ctx)->keylen = klen;
if (ioctl(fd, CIOCGSESSION, CDATA(ctx)) == -1) {
err("CIOCGSESSION failed");
return 0;
}
return 1;
}
static int dev_crypto_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
struct crypt_op cryp;
unsigned char lb[MAX_HW_IV];
if (!inl)
return 1;
assert(CDATA(ctx));
assert(!dev_failed);
memset(&cryp, '\0', sizeof(cryp));
cryp.ses = CDATA(ctx)->ses;
cryp.op = ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
cryp.flags = 0;
cryp.len = inl;
assert((inl & (ctx->cipher->block_size - 1)) == 0);
cryp.src = (caddr_t) in;
cryp.dst = (caddr_t) out;
cryp.mac = 0;
if (ctx->cipher->iv_len)
cryp.iv = (caddr_t) ctx->iv;
if (!ctx->encrypt)
memcpy(lb, &in[cryp.len - ctx->cipher->iv_len], ctx->cipher->iv_len);
if (ioctl(fd, CIOCCRYPT, &cryp) == -1) {
if (errno == EINVAL) { /* buffers are misaligned */
unsigned int cinl = 0;
char *cin = NULL;
char *cout = NULL;
/* NB: this can only make cinl != inl with stream ciphers */
cinl = (inl + 3) / 4 * 4;
if (((unsigned long)in & 3) || cinl != inl) {
cin = OPENSSL_malloc(cinl);
if (cin == NULL) {
err("cin - memory allocation failed");
abort();
return 0;
}
memcpy(cin, in, inl);
cryp.src = cin;
}
if (((unsigned long)out & 3) || cinl != inl) {
cout = OPENSSL_malloc(cinl);
cryp.dst = cout;
}
cryp.len = cinl;
if (ioctl(fd, CIOCCRYPT, &cryp) == -1) {
err("CIOCCRYPT(2) failed");
printf("src=%p dst=%p\n", cryp.src, cryp.dst);
abort();
return 0;
}
if (cout) {
memcpy(out, cout, inl);
OPENSSL_free(cout);
}
if (cin)
OPENSSL_free(cin);
} else {
err("CIOCCRYPT failed");
abort();
return 0;
}
}
if (ctx->encrypt)
memcpy(ctx->iv, &out[cryp.len - ctx->cipher->iv_len],
ctx->cipher->iv_len);
else
memcpy(ctx->iv, lb, ctx->cipher->iv_len);
return 1;
}
static int dev_crypto_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
const unsigned char *key,
const unsigned char *iv, int enc)
{
return dev_crypto_init_key(ctx, CRYPTO_3DES_CBC, key, 24);
}
# define dev_crypto_des_ede3_cbc_cipher dev_crypto_cipher
BLOCK_CIPHER_def_cbc(dev_crypto_des_ede3, session_op, NID_des_ede3, 8, 24, 8,
0, dev_crypto_des_ede3_init_key,
dev_crypto_cleanup,
EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL)
static int dev_crypto_rc4_init_key(EVP_CIPHER_CTX *ctx,
const unsigned char *key,
const unsigned char *iv, int enc)
{
return dev_crypto_init_key(ctx, CRYPTO_ARC4, key, 16);
}
static const EVP_CIPHER r4_cipher = {
NID_rc4,
1, 16, 0, /* FIXME: key should be up to 256 bytes */
EVP_CIPH_VARIABLE_LENGTH,
dev_crypto_rc4_init_key,
dev_crypto_cipher,
dev_crypto_cleanup,
sizeof(session_op),
NULL,
NULL,
NULL
};
const EVP_CIPHER *EVP_dev_crypto_rc4(void)
{
return &r4_cipher;
}
typedef struct {
session_op sess;
char *data;
int len;
unsigned char md[EVP_MAX_MD_SIZE];
} MD_DATA;
static int dev_crypto_init_digest(MD_DATA *md_data, int mac)
{
if (!dev_crypto_init(&md_data->sess))
return 0;
md_data->len = 0;
md_data->data = NULL;
md_data->sess.mac = mac;
if (ioctl(fd, CIOCGSESSION, &md_data->sess) == -1) {
err("CIOCGSESSION failed");
return 0;
}
return 1;
}
static int dev_crypto_cleanup_digest(MD_DATA *md_data)
{
if (ioctl(fd, CIOCFSESSION, &md_data->sess.ses) == -1) {
err("CIOCFSESSION failed");
return 0;
}
return 1;
}
/* FIXME: if device can do chained MACs, then don't accumulate */
/* FIXME: move accumulation to the framework */
static int dev_crypto_md5_init(EVP_MD_CTX *ctx)
{
return dev_crypto_init_digest(ctx->md_data, CRYPTO_MD5);
}
static int do_digest(int ses, unsigned char *md, const void *data, int len)
{
struct crypt_op cryp;
static unsigned char md5zero[16] = {
0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e
};
/* some cards can't do zero length */
if (!len) {
memcpy(md, md5zero, 16);
return 1;
}
memset(&cryp, '\0', sizeof(cryp));
cryp.ses = ses;
cryp.op = COP_ENCRYPT; /* required to do the MAC rather than check
* it */
cryp.len = len;
cryp.src = (caddr_t) data;
cryp.dst = (caddr_t) data; // FIXME!!!
cryp.mac = (caddr_t) md;
if (ioctl(fd, CIOCCRYPT, &cryp) == -1) {
if (errno == EINVAL) { /* buffer is misaligned */
char *dcopy;
dcopy = OPENSSL_malloc(len);
if (dcopy == NULL) {
err("dcopy - memory allocation failed");
abort();
return 0;
}
memcpy(dcopy, data, len);
cryp.src = dcopy;
cryp.dst = cryp.src; // FIXME!!!
if (ioctl(fd, CIOCCRYPT, &cryp) == -1) {
err("CIOCCRYPT(MAC2) failed");
abort();
return 0;
}
OPENSSL_free(dcopy);
} else {
err("CIOCCRYPT(MAC) failed");
abort();
return 0;
}
}
// printf("done\n");
return 1;
}
static int dev_crypto_md5_update(EVP_MD_CTX *ctx, const void *data,
unsigned long len)
{
MD_DATA *md_data = ctx->md_data;
if (ctx->flags & EVP_MD_CTX_FLAG_ONESHOT)
return do_digest(md_data->sess.ses, md_data->md, data, len);
md_data->data = OPENSSL_realloc(md_data->data, md_data->len + len);
if (md_data->data == NULL) {
err("DEV_CRYPTO_MD5_UPDATE: unable to allocate memory");
abort();
}
memcpy(md_data->data + md_data->len, data, len);
md_data->len += len;
return 1;
}
static int dev_crypto_md5_final(EVP_MD_CTX *ctx, unsigned char *md)
{
int ret;
MD_DATA *md_data = ctx->md_data;
if (ctx->flags & EVP_MD_CTX_FLAG_ONESHOT) {
memcpy(md, md_data->md, MD5_DIGEST_LENGTH);
ret = 1;
} else {
ret = do_digest(md_data->sess.ses, md, md_data->data, md_data->len);
OPENSSL_free(md_data->data);
md_data->data = NULL;
md_data->len = 0;
}
return ret;
}
static int dev_crypto_md5_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
{
const MD_DATA *from_md = from->md_data;
MD_DATA *to_md = to->md_data;
// How do we copy sessions?
assert(from->digest->flags & EVP_MD_FLAG_ONESHOT);
to_md->data = OPENSSL_malloc(from_md->len);
if (to_md->data == NULL) {
err("DEV_CRYPTO_MD5_COPY: unable to allocate memory");
abort();
}
memcpy(to_md->data, from_md->data, from_md->len);
return 1;
}
static int dev_crypto_md5_cleanup(EVP_MD_CTX *ctx)
{
return dev_crypto_cleanup_digest(ctx->md_data);
}
static const EVP_MD md5_md = {
NID_md5,
NID_md5WithRSAEncryption,
MD5_DIGEST_LENGTH,
EVP_MD_FLAG_ONESHOT, // XXX: set according to device info...
dev_crypto_md5_init,
dev_crypto_md5_update,
dev_crypto_md5_final,
dev_crypto_md5_copy,
dev_crypto_md5_cleanup,
EVP_PKEY_RSA_method,
MD5_CBLOCK,
sizeof(MD_DATA),
};
const EVP_MD *EVP_dev_crypto_md5(void)
{
return &md5_md;
}
# endif
#endif