55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/* $NetBSD: mpaux.c,v 1.1.1.2 2001/01/14 04:50:24 itojun Exp $ */
|
|
|
|
/*
|
|
* Author: Tatu Ylonen <ylo@cs.hut.fi>
|
|
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
|
|
* All rights reserved
|
|
* This file contains various auxiliary functions related to multiple
|
|
* precision integers.
|
|
*
|
|
* 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".
|
|
*/
|
|
|
|
/* from OpenBSD: mpaux.c,v 1.15 2000/12/19 23:17:57 markus Exp */
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: mpaux.c,v 1.1.1.2 2001/01/14 04:50:24 itojun Exp $");
|
|
#endif
|
|
|
|
#include "includes.h"
|
|
|
|
#include <openssl/bn.h>
|
|
#include "getput.h"
|
|
#include "xmalloc.h"
|
|
|
|
#include <openssl/md5.h>
|
|
|
|
#include "mpaux.h"
|
|
|
|
void
|
|
compute_session_id(u_char session_id[16],
|
|
u_char cookie[8],
|
|
BIGNUM* host_key_n,
|
|
BIGNUM* session_key_n)
|
|
{
|
|
u_int host_key_bytes = BN_num_bytes(host_key_n);
|
|
u_int session_key_bytes = BN_num_bytes(session_key_n);
|
|
u_int bytes = host_key_bytes + session_key_bytes;
|
|
u_char *buf = xmalloc(bytes);
|
|
MD5_CTX md;
|
|
|
|
BN_bn2bin(host_key_n, buf);
|
|
BN_bn2bin(session_key_n, buf + host_key_bytes);
|
|
MD5_Init(&md);
|
|
MD5_Update(&md, buf, bytes);
|
|
MD5_Update(&md, cookie, 8);
|
|
MD5_Final(session_id, &md);
|
|
memset(buf, 0, bytes);
|
|
xfree(buf);
|
|
}
|