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/* $OpenBSD: key.c,v 1.1 2001/05/31 20:20:07 angelos Exp $ */
/*
* The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
*
* Copyright (c) 2000 Angelos D. Keromytis.
*
* Permission to use, copy, and modify this software without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
* You may use this code under the GNU public license if you so wish. Please
* contribute changes back to the authors under this freer than GPL license
* so that we may further the use of strong encryption without limitations to
* all.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
#include <string.h>
#include "sysdep.h"
#include "dyn.h"
#include "util.h"
#include "log.h"
#include "key.h"
#include "x509.h"
void
key_free (int type, int private, void *key)
{
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
free (key);
break;
case ISAKMP_KEY_RSA:
LC (RSA_free, (key));
break;
case ISAKMP_KEY_NONE:
default:
log_error ("key_free: unknown/unsupportedkey type %d", type);
break;
}
}
/* Convert from internal form to serialized */
void
key_serialize (int type, int private, void *key, u_int8_t **data, int *datalen)
{
u_int8_t *p;
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
*datalen = strlen ((char *)key);
*data = strdup ((char *)key);
break;
case ISAKMP_KEY_RSA:
switch (private)
{
case ISAKMP_KEYTYPE_PUBLIC:
*datalen = LC (i2d_RSAPublicKey, ((RSA *)key, NULL));
*data = p = malloc (*datalen);
if (*data == NULL)
{
log_error("key_serialize: malloc (%d) failed", *datalen);
return;
}
*datalen = LC (i2d_RSAPublicKey, ((RSA *)key, &p));
break;
case ISAKMP_KEYTYPE_PRIVATE:
*datalen = LC (i2d_RSAPrivateKey, ((RSA *)key, NULL));
*data = p = malloc (*datalen);
if (*data == NULL)
{
log_error("key_serialize: malloc (%d) failed", *datalen);
return;
}
*datalen = LC (i2d_RSAPrivateKey, ((RSA *)key, &p));
break;
}
break;
default:
log_error ("key_serialize: unknown/unsupported key type %d", type);
break;
}
}
/* Convert from serialized to printable */
char *
key_printable (int type, int private, u_int8_t *data, int datalen)
{
char *s;
int i;
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
return strdup ((char *)data);
case ISAKMP_KEY_RSA:
s = malloc (datalen * 2);
if (s == NULL)
{
log_error ("key_printable: malloc (%d) failed", datalen * 2);
return NULL;
}
for (i = 0; i < datalen; i++)
sprintf (s + (2 * i), "%02x", data[i]);
return s;
default:
log_error ("key_printable: unknown/unsupported key type %d", type);
return NULL;
}
}
/* Convert from serialized to internal */
void *
key_internalize (int type, int private, u_int8_t *data, int datalen)
{
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
return strdup (data);
case ISAKMP_KEY_RSA:
switch (private)
{
case ISAKMP_KEYTYPE_PUBLIC:
return LC (d2i_RSAPublicKey, (NULL, &data, datalen));
case ISAKMP_KEYTYPE_PRIVATE:
return LC (d2i_RSAPrivateKey, (NULL, &data, datalen));
default:
log_error ("key_internalize: not public or private RSA key passed");
return NULL;
}
break;
default:
log_error ("key_internalize: unknown/unsupported key type %d", type);
break;
}
return NULL;
}
/* Convert from printable to serialized */
void
key_from_printable (int type, int private, char *key, u_int8_t **data,
int *datalen)
{
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
*datalen = strlen (key);
*data = strdup (key);
break;
case ISAKMP_KEY_RSA:
*datalen = (strlen (key) + 1) / 2; /* Round up, just in case */
*data = malloc (*datalen);
if (*data == NULL)
{
log_error ("key_from_printable: malloc (%d) failed", *datalen);
return;
}
*datalen = hex2raw (key, *data, *datalen);
break;
default:
log_error ("key_from_printable: unknown/unsupported key type %d", type);
break;
}
}
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