Removing cipher directory (all will be covered by OpenSSL).

This commit is contained in:
Guus Sliepen 2000-10-04 15:09:57 +00:00
parent 2228b16159
commit 73d0dcfcc1
3 changed files with 0 additions and 149 deletions

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## Process this file with automake to get Makefile.in
noinst_LTLIBRARIES = libcipher.la
INCLUDES = -I. -I$(top_builddir) -I$(top_srcdir)/src
libcipher_la_SOURCES = cipher.c
libcipher_la_LDFLAGS =
noinst_HEADERS = cipher.h
CFLAGS = @CFLAGS@ -DPKGLIBDIR="\"$(pkglibdir)/\""

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/*
cipher.c -- wrapper functions for encryption algorithms
Copyright (C) 1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "config.h"
#include <dlfcn.h>
#include <string.h>
#include <syslog.h>
#include <cipher.h>
#include <openssl/blowfish.h>
#include "net.h"
void (*blowfish_cfb64_encrypt) (unsigned char*, unsigned char*, int,
BF_KEY*, unsigned char*, int*, int) = NULL;
void (*blowfish_set_key) (BF_KEY*, int, char*) = NULL;
unsigned char initvec[] = { 0x22, 0x7b, 0xad, 0x55, 0x41, 0xf4, 0x3e, 0xf3 };
BF_KEY encryption_key;
void low_crypt_key(unsigned char *in, unsigned char *out, BF_KEY *k, long len, int c)
{
int count = 7;
unsigned char ivec[8];
memcpy(ivec, initvec, 8);
blowfish_cfb64_encrypt(in, out, len, k, &ivec[0], &count, c);
}
void do_encrypt(vpn_packet_t *in, real_packet_t *out, enc_key_t *key)
{
unsigned char ivec[8];
int r;
memcpy(ivec, initvec, 8);
cipher_set_key(&encryption_key, key->length, key->key);
low_crypt_key((char*)(&in->data), (char*)(&out->data.data),
&encryption_key, in->len, BF_ENCRYPT);
out->len = in->len + 2;
r = (in->len + 2) % 8;
if(r)
out->len += (8-r);
out->len += 8;
/* The smallest multiple of 8 greater
than or equal to in->len + 8 */
out->data.len = in->len;
}
void do_decrypt(real_packet_t *in, vpn_packet_t *out, enc_key_t *key)
{
unsigned char ivec[8];
memcpy(ivec, initvec, 8);
cipher_set_key(&encryption_key, key->length, key->key);
low_crypt_key((char*)(&in->data.data), (char*)(&out->data),
&encryption_key, in->data.len, BF_DECRYPT);
out->len = in->data.len;
}
void cipher_set_key(BF_KEY *k, int l, char *t)
{
blowfish_set_key(k, l, t);
}
int cipher_init(int which)
{
void *dlhandle;
char *error;
blowfish_cfb64_encrypt = BF_cfb64_encrypt;
blowfish_set_key = BF_set_key;
return 0;
}

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/*
cipher.c -- header file for cipher.c
Copyright (C) 1999,2000 Ivo Timmermans <zarq@iname.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __TINC_CIPHER_H__
#define __TINC_CIPHER_H__
#include <openssl/blowfish.h>
#include "net.h"
enum {
CIPHER_BLOWFISH = 1,
CIPHER_IDEA
};
extern BF_KEY encryption_key;
void low_crypt_key(unsigned char*, unsigned char*, BF_KEY*, long, int);
void do_encrypt(vpn_packet_t *in, real_packet_t *out, enc_key_t *);
void do_decrypt(real_packet_t *in, vpn_packet_t *out, enc_key_t *);
void cipher_set_key(BF_KEY*, int, char*);
int cipher_init(int);
#endif /* __TINC_CIPHER_H__ */