/* $OpenBSD: key.c,v 1.81 2009/12/11 18:16:33 markus Exp $ */
/*
* read_bignum():
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
*
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*
*
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
* Copyright (c) 2008 Alexander von Gernler. 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 "includes.h"
#include <sys/param.h>
#include <sys/types.h>
#include <openssl/evp.h>
#include <openbsd-compat/openssl-compat.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "xmalloc.h"
#include "key.h"
#include "rsa.h"
#include "uuencode.h"
#include "buffer.h"
#include "log.h"
Key *
key_new(int type)
{
Key *k;
RSA *rsa;
DSA *dsa;
k = xcalloc(1, sizeof(*k));
k->type = type;
k->dsa = NULL;
k->rsa = NULL;
switch (k->type) {
case KEY_RSA1:
case KEY_RSA:
if ((rsa = RSA_new()) == NULL)
fatal("key_new: RSA_new failed");
if ((rsa->n = BN_new()) == NULL)
fatal("key_new: BN_new failed");
if ((rsa->e = BN_new()) == NULL)
fatal("key_new: BN_new failed");
k->rsa = rsa;
break;
case KEY_DSA:
if ((dsa = DSA_new()) == NULL)
fatal("key_new: DSA_new failed");
if ((dsa->p = BN_new()) == NULL)
fatal("key_new: BN_new failed");
if ((dsa->q = BN_new()) == NULL)
fatal("key_new: BN_new failed");
if ((dsa->g = BN_new()) == NULL)
fatal("key_new: BN_new failed");
if ((dsa->pub_key = BN_new()) == NULL)
fatal("key_new: BN_new failed");
k->dsa = dsa;
break;
case KEY_UNSPEC:
break;
default:
fatal("key_new: bad key type %d", k->type);
break;
}
return k;
}
Key *
key_new_private(int type)
{
Key *k = key_new(type);
switch (k->type) {
case KEY_RSA1:
case KEY_RSA:
if ((k->rsa->d = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->iqmp = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->q = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->p = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->dmq1 = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->dmp1 = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
break;
case KEY_DSA:
if ((k->dsa->priv_key = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
break;
case KEY_UNSPEC:
break;
default:
break;
}
return k;
}
void
key_free(Key *k)
{
if (k == NULL)
fatal("key_free: key is NULL");
switch (k->type) {
case KEY_RSA1:
case KEY_RSA:
if (k->rsa != NULL)
RSA_free(k->rsa);
k->rsa = NULL;
break;
case KEY_DSA:
if (k->dsa