1 /* crypto/des/ecb_enc.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  *
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  *
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  *
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  *
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  *
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.]
57  */
58 
59 #include "des_locl.h"
60 #include "des_ver.h"
61 #include <openssl/opensslv.h>
62 #include <openssl/bio.h>
63 
64 OPENSSL_GLOBAL const char libdes_version[] = "libdes" OPENSSL_VERSION_PTEXT;
65 OPENSSL_GLOBAL const char DES_version[] = "DES" OPENSSL_VERSION_PTEXT;
66 
DES_options(void)67 const char *DES_options(void)
68 {
69     static int init = 1;
70     static char buf[32];
71 
72     if (init) {
73         const char *ptr, *unroll, *risc, *size;
74 
75 #ifdef DES_PTR
76         ptr = "ptr";
77 #else
78         ptr = "idx";
79 #endif
80 #if defined(DES_RISC1) || defined(DES_RISC2)
81 # ifdef DES_RISC1
82         risc = "risc1";
83 # endif
84 # ifdef DES_RISC2
85         risc = "risc2";
86 # endif
87 #else
88         risc = "cisc";
89 #endif
90 #ifdef DES_UNROLL
91         unroll = "16";
92 #else
93         unroll = "2";
94 #endif
95         if (sizeof(DES_LONG) != sizeof(long))
96             size = "int";
97         else
98             size = "long";
99         BIO_snprintf(buf, sizeof buf, "des(%s,%s,%s,%s)", ptr, risc, unroll,
100                      size);
101         init = 0;
102     }
103     return (buf);
104 }
105 
DES_ecb_encrypt(const_DES_cblock * input,DES_cblock * output,DES_key_schedule * ks,int enc)106 void DES_ecb_encrypt(const_DES_cblock *input, DES_cblock *output,
107                      DES_key_schedule *ks, int enc)
108 {
109     register DES_LONG l;
110     DES_LONG ll[2];
111     const unsigned char *in = &(*input)[0];
112     unsigned char *out = &(*output)[0];
113 
114     c2l(in, l);
115     ll[0] = l;
116     c2l(in, l);
117     ll[1] = l;
118     DES_encrypt1(ll, ks, enc);
119     l = ll[0];
120     l2c(l, out);
121     l = ll[1];
122     l2c(l, out);
123     l = ll[0] = ll[1] = 0;
124 }
125