xref: /openssl/crypto/des/ecb3_enc.c (revision 33388b44)
1 /*
2  * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9 
10 /*
11  * DES low level APIs are deprecated for public use, but still ok for internal
12  * use.
13  */
14 #include "internal/deprecated.h"
15 
16 #include "des_local.h"
17 
DES_ecb3_encrypt(const_DES_cblock * input,DES_cblock * output,DES_key_schedule * ks1,DES_key_schedule * ks2,DES_key_schedule * ks3,int enc)18 void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output,
19                       DES_key_schedule *ks1, DES_key_schedule *ks2,
20                       DES_key_schedule *ks3, int enc)
21 {
22     register DES_LONG l0, l1;
23     DES_LONG ll[2];
24     const unsigned char *in = &(*input)[0];
25     unsigned char *out = &(*output)[0];
26 
27     c2l(in, l0);
28     c2l(in, l1);
29     ll[0] = l0;
30     ll[1] = l1;
31     if (enc)
32         DES_encrypt3(ll, ks1, ks2, ks3);
33     else
34         DES_decrypt3(ll, ks1, ks2, ks3);
35     l0 = ll[0];
36     l1 = ll[1];
37     l2c(l0, out);
38     l2c(l1, out);
39 }
40