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/* $OpenBSD: md5.c,v 1.6 2004/07/22 15:11:35 miod Exp $ */
/*
* Copyright (c) 2002 Markus Friedl. 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.
*
* 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.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/sysctl.h>
#include <crypto/cryptodev.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define MD5LEN 16
static char *
sysmd5(const char *s, size_t len)
{
static char md[MD5LEN*2 + 1];
unsigned char digest[MD5LEN];
struct session_op session;
struct crypt_op cryp;
int cryptodev_fd = -1, fd = -1, i;
if ((cryptodev_fd = open("/dev/crypto", O_RDWR, 0)) < 0) {
warn("/dev/crypto");
goto err;
}
if (ioctl(cryptodev_fd, CRIOGET, &fd) == -1) {
warn("CRIOGET failed");
goto err;
}
memset(&session, 0, sizeof(session));
session.cipher = 0;
session.mac = CRYPTO_MD5;
session.mackeylen = 0;
if (ioctl(fd, CIOCGSESSION, &session) == -1) {
warn("CIOCGSESSION");
goto err;
}
memset(&cryp, 0, sizeof(cryp));
cryp.ses = session.ses;
cryp.op = COP_ENCRYPT; /*???*/
cryp.flags = 0;
cryp.src = (caddr_t) s;
cryp.len = len;
cryp.dst = 0;
cryp.mac = (caddr_t) digest;
cryp.iv = 0;
if (ioctl(fd, CIOCCRYPT, &cryp) == -1) {
warn("CIOCCRYPT");
goto err;
}
if (ioctl(fd, CIOCFSESSION, &session.ses) == -1) {
warn("CIOCFSESSION");
goto err;
}
close(fd);
close(cryptodev_fd);
md[0] = '\0';
for (i = 0; i < MD5LEN; i++)
snprintf(md + 2*i, sizeof(md) - 2*i, "%2.2x", digest[i]);
return (md);
err:
if (fd != -1)
close(fd);
if (cryptodev_fd != -1)
close(cryptodev_fd);
return (NULL);
}
static int
getallowsoft(void)
{
int mib[2], old;
size_t olen;
olen = sizeof(old);
mib[0] = CTL_KERN;
mib[1] = KERN_CRYPTODEVALLOWSOFT;
if (sysctl(mib, 2, &old, &olen, NULL, 0) < 0)
err(1, "sysctl failed");
return old;
}
static void
setallowsoft(int new)
{
int mib[2], old;
size_t olen, nlen;
olen = nlen = sizeof(new);
mib[0] = CTL_KERN;
mib[1] = KERN_CRYPTODEVALLOWSOFT;
if (sysctl(mib, 2, &old, &olen, &new, nlen) < 0)
err(1, "sysctl failed");
}
/* test vectors from RFC 1321 */
static struct {
char *dat;
char *md;
} test[] = {
{ "", "d41d8cd98f00b204e9800998ecf8427e" },
{ "a", "0cc175b9c0f1b6a831c399e269772661" },
{ "abc", "900150983cd24fb0d6963f7d28e17f72" },
{ "message digest", "f96b697d7cb7938d525a2f31aaf161d0" },
{ "abcdefghijklmnopqrstuvwxyz", "c3fcd3d76192e4007dfb496cca67e13b" },
{ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
"d174ab98d277d9f5a5611c2c9f419d9f" },
{ "123456789012345678901234567890123456789012345678901234567890"
"12345678901234567890", "57edf4a22be3c955ac49da2e2107b67a" },
{ NULL, NULL },
};
int
main(int argc, char **argv)
{
int allowed = 0, i, count, fail;
char *md;
if (geteuid() == 0) {
allowed = getallowsoft();
if (allowed == 0)
setallowsoft(1);
}
for (count = 0, fail = 0, i = 0; test[i].dat; i++) {
if ((md = sysmd5(test[i].dat, strlen(test[i].dat))) == NULL) {
warn("md5 with /dev/crypto failed");
continue;
}
if (strcmp(md, test[i].md) == 0) {
printf("md5 ok for '%s'\n", test[i].dat);
count++;
} else {
warnx("md5 failed for '%s': got '%s' expected '%s'",
test[i].dat, md, test[i].md);
fail++;
}
}
if (geteuid() == 0 && allowed == 0)
setallowsoft(0);
exit((fail > 0 || count == 0) ? 1 : 0);
}
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