/src/openssl/crypto/des/des_enc.c

Source (jump to first uncovered line)
/*
 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (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
 */

/*
 * DES low level APIs are deprecated for public use, but still ok for internal
 * use.
 */
#include "internal/deprecated.h"

#include <openssl/crypto.h>
#include "des_local.h"
#include "spr.h"

void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
{
    register DES_LONG l, r, t, u;
    register DES_LONG *s;

    r = data[0];
    l = data[1];

    IP(r, l);
    /*
     * Things have been modified so that the initial rotate is done outside
     * the loop.  This required the DES_SPtrans values in sp.h to be rotated
     * 1 bit to the right. One perl script later and things have a 5% speed
     * up on a sparc2. Thanks to Richard Outerbridge for pointing this out.
     */
    /* clear the top bits on machines with 8byte longs */
    /* shift left by 2 */
    r = ROTATE(r, 29) & 0xffffffffL;
    l = ROTATE(l, 29) & 0xffffffffL;

    s = ks->ks->deslong;
    /*
     * I don't know if it is worth the effort of loop unrolling the inner
     * loop
     */
    if (enc) {
        D_ENCRYPT(l, r, 0);     /* 1 */
        D_ENCRYPT(r, l, 2);     /* 2 */
        D_ENCRYPT(l, r, 4);     /* 3 */
        D_ENCRYPT(r, l, 6);     /* 4 */
        D_ENCRYPT(l, r, 8);     /* 5 */
        D_ENCRYPT(r, l, 10);    /* 6 */
        D_ENCRYPT(l, r, 12);    /* 7 */
        D_ENCRYPT(r, l, 14);    /* 8 */
        D_ENCRYPT(l, r, 16);    /* 9 */
        D_ENCRYPT(r, l, 18);    /* 10 */
        D_ENCRYPT(l, r, 20);    /* 11 */
        D_ENCRYPT(r, l, 22);    /* 12 */
        D_ENCRYPT(l, r, 24);    /* 13 */
        D_ENCRYPT(r, l, 26);    /* 14 */
        D_ENCRYPT(l, r, 28);    /* 15 */
        D_ENCRYPT(r, l, 30);    /* 16 */
    } else {
        D_ENCRYPT(l, r, 30);    /* 16 */
        D_ENCRYPT(r, l, 28);    /* 15 */
        D_ENCRYPT(l, r, 26);    /* 14 */
        D_ENCRYPT(r, l, 24);    /* 13 */
        D_ENCRYPT(l, r, 22);    /* 12 */
        D_ENCRYPT(r, l, 20);    /* 11 */
        D_ENCRYPT(l, r, 18);    /* 10 */
        D_ENCRYPT(r, l, 16);    /* 9 */
        D_ENCRYPT(l, r, 14);    /* 8 */
        D_ENCRYPT(r, l, 12);    /* 7 */
        D_ENCRYPT(l, r, 10);    /* 6 */
        D_ENCRYPT(r, l, 8);     /* 5 */
        D_ENCRYPT(l, r, 6);     /* 4 */
        D_ENCRYPT(r, l, 4);     /* 3 */
        D_ENCRYPT(l, r, 2);     /* 2 */
        D_ENCRYPT(r, l, 0);     /* 1 */
    }

    /* rotate and clear the top bits on machines with 8byte longs */
    l = ROTATE(l, 3) & 0xffffffffL;
    r = ROTATE(r, 3) & 0xffffffffL;

    FP(r, l);
    data[0] = l;
    data[1] = r;
    l = r = t = u = 0;
}

void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
{
    register DES_LONG l, r, t, u;
    register DES_LONG *s;

    r = data[0];
    l = data[1];

    /*
     * Things have been modified so that the initial rotate is done outside
     * the loop.  This required the DES_SPtrans values in sp.h to be rotated
     * 1 bit to the right. One perl script later and things have a 5% speed
     * up on a sparc2. Thanks to Richard Outerbridge for pointing this out.
     */
    /* clear the top bits on machines with 8byte longs */
    r = ROTATE(r, 29) & 0xffffffffL;
    l = ROTATE(l, 29) & 0xffffffffL;

    s = ks->ks->deslong;
    /*
     * I don't know if it is worth the effort of loop unrolling the inner
     * loop
     */
    if (enc) {
        D_ENCRYPT(l, r, 0);     /* 1 */
        D_ENCRYPT(r, l, 2);     /* 2 */
        D_ENCRYPT(l, r, 4);     /* 3 */
        D_ENCRYPT(r, l, 6);     /* 4 */
        D_ENCRYPT(l, r, 8);     /* 5 */
        D_ENCRYPT(r, l, 10);    /* 6 */
        D_ENCRYPT(l, r, 12);    /* 7 */
        D_ENCRYPT(r, l, 14);    /* 8 */
        D_ENCRYPT(l, r, 16);    /* 9 */
        D_ENCRYPT(r, l, 18);    /* 10 */
        D_ENCRYPT(l, r, 20);    /* 11 */
        D_ENCRYPT(r, l, 22);    /* 12 */
        D_ENCRYPT(l, r, 24);    /* 13 */
        D_ENCRYPT(r, l, 26);    /* 14 */
        D_ENCRYPT(l, r, 28);    /* 15 */
        D_ENCRYPT(r, l, 30);    /* 16 */
    } else {
        D_ENCRYPT(l, r, 30);    /* 16 */
        D_ENCRYPT(r, l, 28);    /* 15 */
        D_ENCRYPT(l, r, 26);    /* 14 */
        D_ENCRYPT(r, l, 24);    /* 13 */
        D_ENCRYPT(l, r, 22);    /* 12 */
        D_ENCRYPT(r, l, 20);    /* 11 */
        D_ENCRYPT(l, r, 18);    /* 10 */
        D_ENCRYPT(r, l, 16);    /* 9 */
        D_ENCRYPT(l, r, 14);    /* 8 */
        D_ENCRYPT(r, l, 12);    /* 7 */
        D_ENCRYPT(l, r, 10);    /* 6 */
        D_ENCRYPT(r, l, 8);     /* 5 */
        D_ENCRYPT(l, r, 6);     /* 4 */
        D_ENCRYPT(r, l, 4);     /* 3 */
        D_ENCRYPT(l, r, 2);     /* 2 */
        D_ENCRYPT(r, l, 0);     /* 1 */
    }
    /* rotate and clear the top bits on machines with 8byte longs */
    data[0] = ROTATE(l, 3) & 0xffffffffL;
    data[1] = ROTATE(r, 3) & 0xffffffffL;
    l = r = t = u = 0;
}

void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
                  DES_key_schedule *ks2, DES_key_schedule *ks3)
{
    register DES_LONG l, r;

    l = data[0];
    r = data[1];
    IP(l, r);
    data[0] = l;
    data[1] = r;
    DES_encrypt2((DES_LONG *)data, ks1, DES_ENCRYPT);
    DES_encrypt2((DES_LONG *)data, ks2, DES_DECRYPT);
    DES_encrypt2((DES_LONG *)data, ks3, DES_ENCRYPT);
    l = data[0];
    r = data[1];
    FP(r, l);
    data[0] = l;
    data[1] = r;
}

void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
                  DES_key_schedule *ks2, DES_key_schedule *ks3)
{
    register DES_LONG l, r;

    l = data[0];
    r = data[1];
    IP(l, r);
    data[0] = l;
    data[1] = r;
    DES_encrypt2((DES_LONG *)data, ks3, DES_DECRYPT);
    DES_encrypt2((DES_LONG *)data, ks2, DES_ENCRYPT);
    DES_encrypt2((DES_LONG *)data, ks1, DES_DECRYPT);
    l = data[0];
    r = data[1];
    FP(r, l);
    data[0] = l;
    data[1] = r;
}

#ifndef DES_DEFAULT_OPTIONS

# undef CBC_ENC_C__DONT_UPDATE_IV
# include "ncbc_enc.c"          /* DES_ncbc_encrypt */

void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output,
                          long length, DES_key_schedule *ks1,
                          DES_key_schedule *ks2, DES_key_schedule *ks3,
                          DES_cblock *ivec, int enc)
{
    register DES_LONG tin0, tin1;
    register DES_LONG tout0, tout1, xor0, xor1;
    register const unsigned char *in;
    unsigned char *out;
    register long l = length;
    DES_LONG tin[2];
    unsigned char *iv;

    in = input;
    out = output;
    iv = &(*ivec)[0];

    if (enc) {
        c2l(iv, tout0);
        c2l(iv, tout1);
        for (l -= 8; l >= 0; l -= 8) {
            c2l(in, tin0);
            c2l(in, tin1);
            tin0 ^= tout0;
            tin1 ^= tout1;

            tin[0] = tin0;
            tin[1] = tin1;
            DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
            tout0 = tin[0];
            tout1 = tin[1];

            l2c(tout0, out);
            l2c(tout1, out);
        }
        if (l != -8) {
            c2ln(in, tin0, tin1, l + 8);
            tin0 ^= tout0;
            tin1 ^= tout1;

            tin[0] = tin0;
            tin[1] = tin1;
            DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
            tout0 = tin[0];
            tout1 = tin[1];

            l2c(tout0, out);
            l2c(tout1, out);
        }
        iv = &(*ivec)[0];
        l2c(tout0, iv);
        l2c(tout1, iv);
    } else {
        register DES_LONG t0, t1;

        c2l(iv, xor0);
        c2l(iv, xor1);
        for (l -= 8; l >= 0; l -= 8) {
            c2l(in, tin0);
            c2l(in, tin1);

            t0 = tin0;
            t1 = tin1;

            tin[0] = tin0;
            tin[1] = tin1;
            DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
            tout0 = tin[0];
            tout1 = tin[1];

            tout0 ^= xor0;
            tout1 ^= xor1;
            l2c(tout0, out);
            l2c(tout1, out);
            xor0 = t0;
            xor1 = t1;
        }
        if (l != -8) {
            c2l(in, tin0);
            c2l(in, tin1);

            t0 = tin0;
            t1 = tin1;

            tin[0] = tin0;
            tin[1] = tin1;
            DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
            tout0 = tin[0];
            tout1 = tin[1];

            tout0 ^= xor0;
            tout1 ^= xor1;
            l2cn(tout0, tout1, out, l + 8);
            xor0 = t0;
            xor1 = t1;
        }

        iv = &(*ivec)[0];
        l2c(xor0, iv);
        l2c(xor1, iv);
    }
    tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
    tin[0] = tin[1] = 0;
}

#endif                          /* DES_DEFAULT_OPTIONS */

Coverage Report

Created: 2025-06-13 06:55

Line	Count	Source (jump to first uncovered line)
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 <openssl/crypto.h>
17		#include "des_local.h"
18		#include "spr.h"
19
20		void DES_encrypt1(DES_LONG data, DES_key_schedule ks, int enc)
21	0	{
22	0	register DES_LONG l, r, t, u;
23	0	register DES_LONG *s;
24
25	0	r = data[0];
26	0	l = data[1];
27
28	0	IP(r, l);
29		/*
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.
34		*/
35		/* clear the top bits on machines with 8byte longs */
36		/* shift left by 2 */
37	0	r = ROTATE(r, 29) & 0xffffffffL;
38	0	l = ROTATE(l, 29) & 0xffffffffL;
39
40	0	s = ks->ks->deslong;
41		/*
42		* I don't know if it is worth the effort of loop unrolling the inner
43		* loop
44		*/
45	0	if (enc) {
46	0	D_ENCRYPT(l, r, 0); /* 1 */
47	0	D_ENCRYPT(r, l, 2); /* 2 */
48	0	D_ENCRYPT(l, r, 4); /* 3 */
49	0	D_ENCRYPT(r, l, 6); /* 4 */
50	0	D_ENCRYPT(l, r, 8); /* 5 */
51	0	D_ENCRYPT(r, l, 10); /* 6 */
52	0	D_ENCRYPT(l, r, 12); /* 7 */
53	0	D_ENCRYPT(r, l, 14); /* 8 */
54	0	D_ENCRYPT(l, r, 16); /* 9 */
55	0	D_ENCRYPT(r, l, 18); /* 10 */
56	0	D_ENCRYPT(l, r, 20); /* 11 */
57	0	D_ENCRYPT(r, l, 22); /* 12 */
58	0	D_ENCRYPT(l, r, 24); /* 13 */
59	0	D_ENCRYPT(r, l, 26); /* 14 */
60	0	D_ENCRYPT(l, r, 28); /* 15 */
61	0	D_ENCRYPT(r, l, 30); /* 16 */
62	0	} else {
63	0	D_ENCRYPT(l, r, 30); /* 16 */
64	0	D_ENCRYPT(r, l, 28); /* 15 */
65	0	D_ENCRYPT(l, r, 26); /* 14 */
66	0	D_ENCRYPT(r, l, 24); /* 13 */
67	0	D_ENCRYPT(l, r, 22); /* 12 */
68	0	D_ENCRYPT(r, l, 20); /* 11 */
69	0	D_ENCRYPT(l, r, 18); /* 10 */
70	0	D_ENCRYPT(r, l, 16); /* 9 */
71	0	D_ENCRYPT(l, r, 14); /* 8 */
72	0	D_ENCRYPT(r, l, 12); /* 7 */
73	0	D_ENCRYPT(l, r, 10); /* 6 */
74	0	D_ENCRYPT(r, l, 8); /* 5 */
75	0	D_ENCRYPT(l, r, 6); /* 4 */
76	0	D_ENCRYPT(r, l, 4); /* 3 */
77	0	D_ENCRYPT(l, r, 2); /* 2 */
78	0	D_ENCRYPT(r, l, 0); /* 1 */
79	0	}
80
81		/* rotate and clear the top bits on machines with 8byte longs */
82	0	l = ROTATE(l, 3) & 0xffffffffL;
83	0	r = ROTATE(r, 3) & 0xffffffffL;
84
85	0	FP(r, l);
86	0	data[0] = l;
87	0	data[1] = r;
88	0	l = r = t = u = 0;
89	0	}
90
91		void DES_encrypt2(DES_LONG data, DES_key_schedule ks, int enc)
92	0	{
93	0	register DES_LONG l, r, t, u;
94	0	register DES_LONG *s;
95
96	0	r = data[0];
97	0	l = data[1];
98
99		/*
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.
104		*/
105		/* clear the top bits on machines with 8byte longs */
106	0	r = ROTATE(r, 29) & 0xffffffffL;
107	0	l = ROTATE(l, 29) & 0xffffffffL;
108
109	0	s = ks->ks->deslong;
110		/*
111		* I don't know if it is worth the effort of loop unrolling the inner
112		* loop
113		*/
114	0	if (enc) {
115	0	D_ENCRYPT(l, r, 0); /* 1 */
116	0	D_ENCRYPT(r, l, 2); /* 2 */
117	0	D_ENCRYPT(l, r, 4); /* 3 */
118	0	D_ENCRYPT(r, l, 6); /* 4 */
119	0	D_ENCRYPT(l, r, 8); /* 5 */
120	0	D_ENCRYPT(r, l, 10); /* 6 */
121	0	D_ENCRYPT(l, r, 12); /* 7 */
122	0	D_ENCRYPT(r, l, 14); /* 8 */
123	0	D_ENCRYPT(l, r, 16); /* 9 */
124	0	D_ENCRYPT(r, l, 18); /* 10 */
125	0	D_ENCRYPT(l, r, 20); /* 11 */
126	0	D_ENCRYPT(r, l, 22); /* 12 */
127	0	D_ENCRYPT(l, r, 24); /* 13 */
128	0	D_ENCRYPT(r, l, 26); /* 14 */
129	0	D_ENCRYPT(l, r, 28); /* 15 */
130	0	D_ENCRYPT(r, l, 30); /* 16 */
131	0	} else {
132	0	D_ENCRYPT(l, r, 30); /* 16 */
133	0	D_ENCRYPT(r, l, 28); /* 15 */
134	0	D_ENCRYPT(l, r, 26); /* 14 */
135	0	D_ENCRYPT(r, l, 24); /* 13 */
136	0	D_ENCRYPT(l, r, 22); /* 12 */
137	0	D_ENCRYPT(r, l, 20); /* 11 */
138	0	D_ENCRYPT(l, r, 18); /* 10 */
139	0	D_ENCRYPT(r, l, 16); /* 9 */
140	0	D_ENCRYPT(l, r, 14); /* 8 */
141	0	D_ENCRYPT(r, l, 12); /* 7 */
142	0	D_ENCRYPT(l, r, 10); /* 6 */
143	0	D_ENCRYPT(r, l, 8); /* 5 */
144	0	D_ENCRYPT(l, r, 6); /* 4 */
145	0	D_ENCRYPT(r, l, 4); /* 3 */
146	0	D_ENCRYPT(l, r, 2); /* 2 */
147	0	D_ENCRYPT(r, l, 0); /* 1 */
148	0	}
149		/* rotate and clear the top bits on machines with 8byte longs */
150	0	data[0] = ROTATE(l, 3) & 0xffffffffL;
151	0	data[1] = ROTATE(r, 3) & 0xffffffffL;
152	0	l = r = t = u = 0;
153	0	}
154
155		void DES_encrypt3(DES_LONG data, DES_key_schedule ks1,
156		DES_key_schedule ks2, DES_key_schedule ks3)
157	0	{
158	0	register DES_LONG l, r;
159
160	0	l = data[0];
161	0	r = data[1];
162	0	IP(l, r);
163	0	data[0] = l;
164	0	data[1] = r;
165	0	DES_encrypt2((DES_LONG *)data, ks1, DES_ENCRYPT);
166	0	DES_encrypt2((DES_LONG *)data, ks2, DES_DECRYPT);
167	0	DES_encrypt2((DES_LONG *)data, ks3, DES_ENCRYPT);
168	0	l = data[0];
169	0	r = data[1];
170	0	FP(r, l);
171	0	data[0] = l;
172	0	data[1] = r;
173	0	}
174
175		void DES_decrypt3(DES_LONG data, DES_key_schedule ks1,
176		DES_key_schedule ks2, DES_key_schedule ks3)
177	0	{
178	0	register DES_LONG l, r;
179
180	0	l = data[0];
181	0	r = data[1];
182	0	IP(l, r);
183	0	data[0] = l;
184	0	data[1] = r;
185	0	DES_encrypt2((DES_LONG *)data, ks3, DES_DECRYPT);
186	0	DES_encrypt2((DES_LONG *)data, ks2, DES_ENCRYPT);
187	0	DES_encrypt2((DES_LONG *)data, ks1, DES_DECRYPT);
188	0	l = data[0];
189	0	r = data[1];
190	0	FP(r, l);
191	0	data[0] = l;
192	0	data[1] = r;
193	0	}
194
195		#ifndef DES_DEFAULT_OPTIONS
196
197		# undef CBC_ENC_C__DONT_UPDATE_IV
198		# include "ncbc_enc.c" /* DES_ncbc_encrypt */
199
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)
204	0	{
205	0	register DES_LONG tin0, tin1;
206	0	register DES_LONG tout0, tout1, xor0, xor1;
207	0	register const unsigned char *in;
208	0	unsigned char *out;
209	0	register long l = length;
210	0	DES_LONG tin[2];
211	0	unsigned char *iv;
212
213	0	in = input;
214	0	out = output;
215	0	iv = &(*ivec)[0];
216
217	0	if (enc) {
218	0	c2l(iv, tout0);
219	0	c2l(iv, tout1);
220	0	for (l -= 8; l >= 0; l -= 8) {
221	0	c2l(in, tin0);
222	0	c2l(in, tin1);
223	0	tin0 ^= tout0;
224	0	tin1 ^= tout1;
225
226	0	tin[0] = tin0;
227	0	tin[1] = tin1;
228	0	DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
229	0	tout0 = tin[0];
230	0	tout1 = tin[1];
231
232	0	l2c(tout0, out);
233	0	l2c(tout1, out);
234	0	}
235	0	if (l != -8) {
236	0	c2ln(in, tin0, tin1, l + 8);
237	0	tin0 ^= tout0;
238	0	tin1 ^= tout1;
239
240	0	tin[0] = tin0;
241	0	tin[1] = tin1;
242	0	DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
243	0	tout0 = tin[0];
244	0	tout1 = tin[1];
245
246	0	l2c(tout0, out);
247	0	l2c(tout1, out);
248	0	}
249	0	iv = &(*ivec)[0];
250	0	l2c(tout0, iv);
251	0	l2c(tout1, iv);
252	0	} else {
253	0	register DES_LONG t0, t1;
254
255	0	c2l(iv, xor0);
256	0	c2l(iv, xor1);
257	0	for (l -= 8; l >= 0; l -= 8) {
258	0	c2l(in, tin0);
259	0	c2l(in, tin1);
260
261	0	t0 = tin0;
262	0	t1 = tin1;
263
264	0	tin[0] = tin0;
265	0	tin[1] = tin1;
266	0	DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
267	0	tout0 = tin[0];
268	0	tout1 = tin[1];
269
270	0	tout0 ^= xor0;
271	0	tout1 ^= xor1;
272	0	l2c(tout0, out);
273	0	l2c(tout1, out);
274	0	xor0 = t0;
275	0	xor1 = t1;
276	0	}
277	0	if (l != -8) {
278	0	c2l(in, tin0);
279	0	c2l(in, tin1);
280
281	0	t0 = tin0;
282	0	t1 = tin1;
283
284	0	tin[0] = tin0;
285	0	tin[1] = tin1;
286	0	DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
287	0	tout0 = tin[0];
288	0	tout1 = tin[1];
289
290	0	tout0 ^= xor0;
291	0	tout1 ^= xor1;
292	0	l2cn(tout0, tout1, out, l + 8);
293	0	xor0 = t0;
294	0	xor1 = t1;
295	0	}
296
297	0	iv = &(*ivec)[0];
298	0	l2c(xor0, iv);
299	0	l2c(xor1, iv);
300	0	}
301	0	tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
302	0	tin[0] = tin[1] = 0;
303	0	}
304
305		#endif /* DES_DEFAULT_OPTIONS */