ecb_enc.c

Go to the documentation of this file.

/* crypto/des/ecb_enc.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([email protected]).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson ([email protected]).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young ([email protected])"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson ([email protected])"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include "des_locl.h"
#include "des_ver.h"
#include <openssl/opensslv.h>
#include <openssl/bio.h>

OPENSSL_GLOBAL const char libdes_version[]="libdes" OPENSSL_VERSION_PTEXT;
OPENSSL_GLOBAL const char DES_version[]="DES" OPENSSL_VERSION_PTEXT;

const char *DES_options(void)
    {
    static int init=1;
    static char buf[32];

    if (init)
        {
        const char *ptr,*unroll,*risc,*size;

#ifdef DES_PTR
        ptr="ptr";
#else
        ptr="idx";
#endif
#if defined(DES_RISC1) || defined(DES_RISC2)
#ifdef DES_RISC1
        risc="risc1";
#endif
#ifdef DES_RISC2
        risc="risc2";
#endif
#else
        risc="cisc";
#endif
#ifdef DES_UNROLL
        unroll="16";
#else
        unroll="2";
#endif
        if (sizeof(DES_LONG) != sizeof(long))
            size="int";
        else
            size="long";
        BIO_snprintf(buf,sizeof buf,"des(%s,%s,%s,%s)",ptr,risc,unroll,
                 size);
        init=0;
        }
    return(buf);
    }
        

void DES_ecb_encrypt(const_DES_cblock *input, DES_cblock *output,
             DES_key_schedule *ks, int enc)
    {
    register DES_LONG l;
    DES_LONG ll[2];
    const unsigned char *in = &(*input)[0];
    unsigned char *out = &(*output)[0];

    c2l(in,l); ll[0]=l;
    c2l(in,l); ll[1]=l;
    DES_encrypt1(ll,ks,enc);
    l=ll[0]; l2c(l,out);
    l=ll[1]; l2c(l,out);
    l=ll[0]=ll[1]=0;
    }