openssl-1.1.0h/crypto/des/rpc_enc.c


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/*
 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (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
 */

#include "rpc_des.h"
#include "des_locl.h"

int _des_crypt(char *buf, int len, struct desparams *desp);
int _des_crypt(char *buf, int len, struct desparams *desp)
{
    DES_key_schedule ks;
    int enc;

    DES_set_key_unchecked(&desp->des_key, &ks);
    enc = (desp->des_dir == ENCRYPT) ? DES_ENCRYPT : DES_DECRYPT;

    if (desp->des_mode == CBC)
        DES_ecb_encrypt((const_DES_cblock *)desp->UDES.UDES_buf,
                        (DES_cblock *)desp->UDES.UDES_buf, &ks, enc);
    else {
        DES_ncbc_encrypt(desp->UDES.UDES_buf, desp->UDES.UDES_buf,
                         len, &ks, &desp->des_ivec, enc);
    }
    return (1);
}