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Annotation of sys/crypto/ecb3_enc.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: ecb3_enc.c,v 1.2 2002/10/27 13:24:26 miod Exp $       */
                      2:
                      3: /* lib/des/ecb3_enc.c */
                      4: /* Copyright (C) 1995 Eric Young (eay@mincom.oz.au)
                      5:  * All rights reserved.
                      6:  *
                      7:  * This file is part of an SSL implementation written
                      8:  * by Eric Young (eay@mincom.oz.au).
                      9:  * The implementation was written so as to conform with Netscapes SSL
                     10:  * specification.  This library and applications are
                     11:  * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
                     12:  * as long as the following conditions are aheared to.
                     13:  *
                     14:  * Copyright remains Eric Young's, and as such any Copyright notices in
                     15:  * the code are not to be removed.  If this code is used in a product,
                     16:  * Eric Young should be given attribution as the author of the parts used.
                     17:  * This can be in the form of a textual message at program startup or
                     18:  * in documentation (online or textual) provided with the package.
                     19:  *
                     20:  * Redistribution and use in source and binary forms, with or without
                     21:  * modification, are permitted provided that the following conditions
                     22:  * are met:
                     23:  * 1. Redistributions of source code must retain the copyright
                     24:  *    notice, this list of conditions and the following disclaimer.
                     25:  * 2. Redistributions in binary form must reproduce the above copyright
                     26:  *    notice, this list of conditions and the following disclaimer in the
                     27:  *    documentation and/or other materials provided with the distribution.
                     28:  * 3. All advertising materials mentioning features or use of this software
                     29:  *    must display the following acknowledgement:
                     30:  *    This product includes software developed by Eric Young (eay@mincom.oz.au)
                     31:  *
                     32:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
                     33:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     34:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     35:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     36:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     37:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     38:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     39:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     40:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     41:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     42:  * SUCH DAMAGE.
                     43:  *
                     44:  * The licence and distribution terms for any publically available version or
                     45:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
                     46:  * copied and put under another distribution licence
                     47:  * [including the GNU Public Licence.]
                     48:  */
                     49:
                     50: #include "des_locl.h"
                     51:
                     52: void des_ecb3_encrypt(input, output, ks1, ks2, ks3, encrypt)
                     53: des_cblock (*input);
                     54: des_cblock (*output);
                     55: des_key_schedule ks1;
                     56: des_key_schedule ks2;
                     57: des_key_schedule ks3;
                     58: int encrypt;
                     59:        {
                     60:        register u_int32_t l0,l1;
                     61:        register unsigned char *in,*out;
                     62:        u_int32_t ll[2];
                     63:
                     64:        in=(unsigned char *)input;
                     65:        out=(unsigned char *)output;
                     66:        c2l(in,l0);
                     67:        c2l(in,l1);
                     68:        IP(l0,l1);
                     69:        ll[0]=l0;
                     70:        ll[1]=l1;
                     71:        des_encrypt2(ll,ks1,encrypt);
                     72:        des_encrypt2(ll,ks2,!encrypt);
                     73:        des_encrypt2(ll,ks3,encrypt);
                     74:        l0=ll[0];
                     75:        l1=ll[1];
                     76:        FP(l1,l0);
                     77:        l2c(l0,out);
                     78:        l2c(l1,out);
                     79:        }