+/* $OpenBSD: ssh-rsa.c,v 1.39 2006/08/03 03:34:42 deraadt Exp $ */
/*
- * Copyright (c) 2000 Markus Friedl. All rights reserved.
+ * Copyright (c) 2000, 2003 Markus Friedl <markus@openbsd.org>
*
- * 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.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
- * 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.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "includes.h"
-RCSID("$OpenBSD: ssh-rsa.c,v 1.29 2003/06/16 08:22:35 markus Exp $");
+
+#include <sys/types.h>
#include <openssl/evp.h>
#include <openssl/err.h>
+#include <stdarg.h>
+#include <string.h>
+
#include "xmalloc.h"
#include "log.h"
#include "buffer.h"
-#include "bufaux.h"
#include "key.h"
#include "compat.h"
#include "ssh.h"
/* RSASSA-PKCS1-v1_5 (PKCS #1 v2.0 signature) with SHA1 */
int
-ssh_rsa_sign(Key *key, u_char **sigp, u_int *lenp,
- u_char *data, u_int datalen)
+ssh_rsa_sign(const Key *key, u_char **sigp, u_int *lenp,
+ const u_char *data, u_int datalen)
{
const EVP_MD *evp_md;
EVP_MD_CTX md;
if (ok != 1) {
int ecode = ERR_get_error();
+
error("ssh_rsa_sign: RSA_sign failed: %s",
ERR_error_string(ecode, NULL));
xfree(sig);
}
int
-ssh_rsa_verify(Key *key, u_char *signature, u_int signaturelen,
- u_char *data, u_int datalen)
+ssh_rsa_verify(const Key *key, const u_char *signature, u_int signaturelen,
+ const u_char *data, u_int datalen)
{
Buffer b;
const EVP_MD *evp_md;
u_int diff = modlen - len;
debug("ssh_rsa_verify: add padding: modlen %u > len %u",
modlen, len);
- sigblob = xrealloc(sigblob, modlen);
+ sigblob = xrealloc(sigblob, 1, modlen);
memmove(sigblob + diff, sigblob, len);
memset(sigblob, 0, diff);
len = modlen;
break;
default:
goto done;
- break;
}
if (hashlen != hlen) {
error("bad hashlen");
ERR_error_string(ERR_get_error(), NULL));
goto done;
}
- if (len < hlen + oidlen) {
- error("bad decrypted len: %d < %d + %d", len, hlen, oidlen);
+ if (len < 0 || (u_int)len != hlen + oidlen) {
+ error("bad decrypted len: %d != %d + %d", len, hlen, oidlen);
goto done;
}
if (memcmp(decrypted, oid, oidlen) != 0) {