/*

 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

/*

 * DES low level APIs are deprecated for public use, but still ok for internal

 * use.

 */

#include "internal/deprecated.h"

#include "des_local.h"

#include <openssl/opensslv.h>

#include <openssl/bio.h>

const char *DES_options(void)

{

    static int init = 1;

    static char buf[12];

    if (init) {

        if (sizeof(DES_LONG) != sizeof(long))

            OPENSSL_strlcpy(buf, "des(int)", sizeof(buf));

        else

            OPENSSL_strlcpy(buf, "des(long)", sizeof(buf));

        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;

}