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      1 /*	$NetBSD: des_ecb.c,v 1.10 2014/03/25 16:28:15 christos Exp $	*/
      2 /*	$KAME: des_ecb.c,v 1.5 2000/11/06 13:58:08 itojun Exp $	*/
      3 
      4 /* crypto/des/ecb_enc.c */
      5 /* Copyright (C) 1995-1998 Eric Young (eay (at) mincom.oz.au)
      6  * All rights reserved.
      7  *
      8  * This file is part of an SSL implementation written
      9  * by Eric Young (eay (at) mincom.oz.au).
     10  * The implementation was written so as to conform with Netscapes SSL
     11  * specification.  This library and applications are
     12  * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
     13  * as long as the following conditions are aheared to.
     14  *
     15  * Copyright remains Eric Young's, and as such any Copyright notices in
     16  * the code are not to be removed.  If this code is used in a product,
     17  * Eric Young should be given attribution as the author of the parts used.
     18  * This can be in the form of a textual message at program startup or
     19  * in documentation (online or textual) provided with the package.
     20  *
     21  * Redistribution and use in source and binary forms, with or without
     22  * modification, are permitted provided that the following conditions
     23  * are met:
     24  * 1. Redistributions of source code must retain the copyright
     25  *    notice, this list of conditions and the following disclaimer.
     26  * 2. Redistributions in binary form must reproduce the above copyright
     27  *    notice, this list of conditions and the following disclaimer in the
     28  *    documentation and/or other materials provided with the distribution.
     29  * 3. All advertising materials mentioning features or use of this software
     30  *    must display the following acknowledgement:
     31  *    This product includes software developed by Eric Young (eay (at) mincom.oz.au)
     32  *
     33  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
     34  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     35  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     36  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     37  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     38  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     39  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     40  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     41  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     42  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     43  * SUCH DAMAGE.
     44  *
     45  * The licence and distribution terms for any publically available version or
     46  * derivative of this code cannot be changed.  i.e. this code cannot simply be
     47  * copied and put under another distribution licence
     48  * [including the GNU Public Licence.]
     49  */
     50 
     51 #include <sys/cdefs.h>
     52 __KERNEL_RCSID(0, "$NetBSD: des_ecb.c,v 1.10 2014/03/25 16:28:15 christos Exp $");
     53 
     54 #include <sys/param.h>
     55 #ifdef _KERNEL
     56 #include <sys/systm.h>
     57 #else
     58 #include <stdio.h>
     59 #include <string.h>
     60 #endif
     61 #include <crypto/des/des_locl.h>
     62 #include <crypto/des/spr.h>
     63 
     64 /* char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay"; */ /* wrong */
     65 /* char *DES_version="DES part of SSLeay 0.6.4 30-Aug-1996"; */
     66 
     67 char *des_options(void)
     68         {
     69         static int init=1;
     70         static char buf[32];
     71 
     72         if (init)
     73                 {
     74                 const char *ptr,*unroll,*risc,*size;
     75 
     76 #ifdef DES_PTR
     77                 ptr="ptr";
     78 #else
     79                 ptr="idx";
     80 #endif
     81 #if defined(DES_RISC1) || defined(DES_RISC2)
     82 #ifdef DES_RISC1
     83                 risc="risc1";
     84 #endif
     85 #ifdef DES_RISC2
     86                 risc="risc2";
     87 #endif
     88 #else
     89                 risc="cisc";
     90 #endif
     91 #ifdef DES_UNROLL
     92                 unroll="16";
     93 #else
     94                 unroll="4";
     95 #endif
     96 		/*CONSTCOND*/
     97                 if (sizeof(DES_LONG) != sizeof(long))
     98                         size="int";
     99                 else
    100                         size="long";
    101                 snprintf(buf, sizeof(buf), "des(%s,%s,%s,%s)",
    102 		    ptr, risc, unroll, size);
    103                 init=0;
    104                 }
    105         return(buf);
    106 }
    107 void des_ecb_encrypt(des_cblock *input, des_cblock *output,
    108 		     des_key_schedule ks, int enc)
    109 {
    110 	register DES_LONG l;
    111 	DES_LONG ll[2];
    112 	const unsigned char *in=&(*input)[0];
    113 	unsigned char *out = &(*output)[0];
    114 
    115 	c2l(in,l); ll[0]=l;
    116 	c2l(in,l); ll[1]=l;
    117 	des_encrypt1(ll,ks,enc);
    118 	l=ll[0]; l2c(l,out);
    119 	l=ll[1]; l2c(l,out);
    120 	l=ll[0]=ll[1]=0;
    121 }
    122 
    123 void des_ecb3_encrypt(des_cblock *input, des_cblock *output,
    124              des_key_schedule ks1, des_key_schedule ks2, des_key_schedule ks3,
    125              int enc)
    126 {
    127 	register DES_LONG l0,l1;
    128 	DES_LONG ll[2];
    129 	const unsigned char *in = &(*input)[0];
    130 	unsigned char *out = &(*output)[0];
    131 
    132 	c2l(in,l0);
    133 	c2l(in,l1);
    134 	ll[0]=l0;
    135 	ll[1]=l1;
    136 
    137 	if (enc)
    138 		des_encrypt3(ll,ks1,ks2,ks3);
    139 	else
    140 		des_decrypt3(ll,ks1,ks2,ks3);
    141 
    142 	l0=ll[0];
    143 	l1=ll[1];
    144 	l2c(l0,out);
    145 	l2c(l1,out);
    146 }
    147