2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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
11 * DES low level APIs are deprecated for public use, but still ok for internal
14 #include "internal/deprecated.h"
16 #include <openssl/crypto.h>
17 #include "des_local.h"
20 void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
22 register DES_LONG l, r, t, u;
30 * Things have been modified so that the initial rotate is done outside
31 * the loop. This required the DES_SPtrans values in sp.h to be rotated
32 * 1 bit to the right. One perl script later and things have a 5% speed
33 * up on a sparc2. Thanks to Richard Outerbridge for pointing this out.
35 /* clear the top bits on machines with 8byte longs */
37 r = ROTATE(r, 29) & 0xffffffffL;
38 l = ROTATE(l, 29) & 0xffffffffL;
42 * I don't know if it is worth the effort of loop unrolling the inner
46 D_ENCRYPT(l, r, 0); /* 1 */
47 D_ENCRYPT(r, l, 2); /* 2 */
48 D_ENCRYPT(l, r, 4); /* 3 */
49 D_ENCRYPT(r, l, 6); /* 4 */
50 D_ENCRYPT(l, r, 8); /* 5 */
51 D_ENCRYPT(r, l, 10); /* 6 */
52 D_ENCRYPT(l, r, 12); /* 7 */
53 D_ENCRYPT(r, l, 14); /* 8 */
54 D_ENCRYPT(l, r, 16); /* 9 */
55 D_ENCRYPT(r, l, 18); /* 10 */
56 D_ENCRYPT(l, r, 20); /* 11 */
57 D_ENCRYPT(r, l, 22); /* 12 */
58 D_ENCRYPT(l, r, 24); /* 13 */
59 D_ENCRYPT(r, l, 26); /* 14 */
60 D_ENCRYPT(l, r, 28); /* 15 */
61 D_ENCRYPT(r, l, 30); /* 16 */
63 D_ENCRYPT(l, r, 30); /* 16 */
64 D_ENCRYPT(r, l, 28); /* 15 */
65 D_ENCRYPT(l, r, 26); /* 14 */
66 D_ENCRYPT(r, l, 24); /* 13 */
67 D_ENCRYPT(l, r, 22); /* 12 */
68 D_ENCRYPT(r, l, 20); /* 11 */
69 D_ENCRYPT(l, r, 18); /* 10 */
70 D_ENCRYPT(r, l, 16); /* 9 */
71 D_ENCRYPT(l, r, 14); /* 8 */
72 D_ENCRYPT(r, l, 12); /* 7 */
73 D_ENCRYPT(l, r, 10); /* 6 */
74 D_ENCRYPT(r, l, 8); /* 5 */
75 D_ENCRYPT(l, r, 6); /* 4 */
76 D_ENCRYPT(r, l, 4); /* 3 */
77 D_ENCRYPT(l, r, 2); /* 2 */
78 D_ENCRYPT(r, l, 0); /* 1 */
81 /* rotate and clear the top bits on machines with 8byte longs */
82 l = ROTATE(l, 3) & 0xffffffffL;
83 r = ROTATE(r, 3) & 0xffffffffL;
91 void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
93 register DES_LONG l, r, t, u;
100 * Things have been modified so that the initial rotate is done outside
101 * the loop. This required the DES_SPtrans values in sp.h to be rotated
102 * 1 bit to the right. One perl script later and things have a 5% speed
103 * up on a sparc2. Thanks to Richard Outerbridge for pointing this out.
105 /* clear the top bits on machines with 8byte longs */
106 r = ROTATE(r, 29) & 0xffffffffL;
107 l = ROTATE(l, 29) & 0xffffffffL;
111 * I don't know if it is worth the effort of loop unrolling the inner
115 D_ENCRYPT(l, r, 0); /* 1 */
116 D_ENCRYPT(r, l, 2); /* 2 */
117 D_ENCRYPT(l, r, 4); /* 3 */
118 D_ENCRYPT(r, l, 6); /* 4 */
119 D_ENCRYPT(l, r, 8); /* 5 */
120 D_ENCRYPT(r, l, 10); /* 6 */
121 D_ENCRYPT(l, r, 12); /* 7 */
122 D_ENCRYPT(r, l, 14); /* 8 */
123 D_ENCRYPT(l, r, 16); /* 9 */
124 D_ENCRYPT(r, l, 18); /* 10 */
125 D_ENCRYPT(l, r, 20); /* 11 */
126 D_ENCRYPT(r, l, 22); /* 12 */
127 D_ENCRYPT(l, r, 24); /* 13 */
128 D_ENCRYPT(r, l, 26); /* 14 */
129 D_ENCRYPT(l, r, 28); /* 15 */
130 D_ENCRYPT(r, l, 30); /* 16 */
132 D_ENCRYPT(l, r, 30); /* 16 */
133 D_ENCRYPT(r, l, 28); /* 15 */
134 D_ENCRYPT(l, r, 26); /* 14 */
135 D_ENCRYPT(r, l, 24); /* 13 */
136 D_ENCRYPT(l, r, 22); /* 12 */
137 D_ENCRYPT(r, l, 20); /* 11 */
138 D_ENCRYPT(l, r, 18); /* 10 */
139 D_ENCRYPT(r, l, 16); /* 9 */
140 D_ENCRYPT(l, r, 14); /* 8 */
141 D_ENCRYPT(r, l, 12); /* 7 */
142 D_ENCRYPT(l, r, 10); /* 6 */
143 D_ENCRYPT(r, l, 8); /* 5 */
144 D_ENCRYPT(l, r, 6); /* 4 */
145 D_ENCRYPT(r, l, 4); /* 3 */
146 D_ENCRYPT(l, r, 2); /* 2 */
147 D_ENCRYPT(r, l, 0); /* 1 */
149 /* rotate and clear the top bits on machines with 8byte longs */
150 data[0] = ROTATE(l, 3) & 0xffffffffL;
151 data[1] = ROTATE(r, 3) & 0xffffffffL;
155 void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
156 DES_key_schedule *ks2, DES_key_schedule *ks3)
158 register DES_LONG l, r;
165 DES_encrypt2((DES_LONG *)data, ks1, DES_ENCRYPT);
166 DES_encrypt2((DES_LONG *)data, ks2, DES_DECRYPT);
167 DES_encrypt2((DES_LONG *)data, ks3, DES_ENCRYPT);
175 void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
176 DES_key_schedule *ks2, DES_key_schedule *ks3)
178 register DES_LONG l, r;
185 DES_encrypt2((DES_LONG *)data, ks3, DES_DECRYPT);
186 DES_encrypt2((DES_LONG *)data, ks2, DES_ENCRYPT);
187 DES_encrypt2((DES_LONG *)data, ks1, DES_DECRYPT);
195 #ifndef DES_DEFAULT_OPTIONS
197 # undef CBC_ENC_C__DONT_UPDATE_IV
198 # include "ncbc_enc.c" /* DES_ncbc_encrypt */
200 void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output,
201 long length, DES_key_schedule *ks1,
202 DES_key_schedule *ks2, DES_key_schedule *ks3,
203 DES_cblock *ivec, int enc)
205 register DES_LONG tin0, tin1;
206 register DES_LONG tout0, tout1, xor0, xor1;
207 register const unsigned char *in;
209 register long l = length;
220 for (l -= 8; l >= 0; l -= 8) {
228 DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
236 c2ln(in, tin0, tin1, l + 8);
242 DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
253 register DES_LONG t0, t1;
257 for (l -= 8; l >= 0; l -= 8) {
266 DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
286 DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
292 l2cn(tout0, tout1, out, l + 8);
301 tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
305 #endif /* DES_DEFAULT_OPTIONS */