xref: /openssl/crypto/des/ecb_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 #include <openssl/opensslv.h>
18 #include <openssl/bio.h>
19 
20 
DES_options(void)21 const char *DES_options(void)
22 {
23     static int init = 1;
24     static char buf[12];
25 
26     if (init) {
27         if (sizeof(DES_LONG) != sizeof(long))
28             OPENSSL_strlcpy(buf, "des(int)", sizeof(buf));
29         else
30             OPENSSL_strlcpy(buf, "des(long)", sizeof(buf));
31         init = 0;
32     }
33     return buf;
34 }
35 
DES_ecb_encrypt(const_DES_cblock * input,DES_cblock * output,DES_key_schedule * ks,int enc)36 void DES_ecb_encrypt(const_DES_cblock *input, DES_cblock *output,
37                      DES_key_schedule *ks, int enc)
38 {
39     register DES_LONG l;
40     DES_LONG ll[2];
41     const unsigned char *in = &(*input)[0];
42     unsigned char *out = &(*output)[0];
43 
44     c2l(in, l);
45     ll[0] = l;
46     c2l(in, l);
47     ll[1] = l;
48     DES_encrypt1(ll, ks, enc);
49     l = ll[0];
50     l2c(l, out);
51     l = ll[1];
52     l2c(l, out);
53     l = ll[0] = ll[1] = 0;
54 }
55