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-rw-r--r--src/lib/libcrypto/des/cfb64ede.c292
1 files changed, 144 insertions, 148 deletions
diff --git a/src/lib/libcrypto/des/cfb64ede.c b/src/lib/libcrypto/des/cfb64ede.c
index f2b2fe2db5..700a36620f 100644
--- a/src/lib/libcrypto/des/cfb64ede.c
+++ b/src/lib/libcrypto/des/cfb64ede.c
@@ -1,25 +1,25 @@
1/* $OpenBSD: cfb64ede.c,v 1.10 2022/11/26 16:08:51 tb Exp $ */ 1/* $OpenBSD: cfb64ede.c,v 1.11 2023/07/08 07:11:07 beck Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved. 3 * All rights reserved.
4 * 4 *
5 * This package is an SSL implementation written 5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com). 6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL. 7 * The implementation was written so as to conform with Netscapes SSL.
8 * 8 *
9 * This library is free for commercial and non-commercial use as long as 9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions 10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA, 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 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 13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * 15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed. 17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution 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. 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 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. 21 * in documentation (online or textual) provided with the package.
22 * 22 *
23 * Redistribution and use in source and binary forms, with or without 23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions 24 * modification, are permitted provided that the following conditions
25 * are met: 25 * are met:
@@ -34,10 +34,10 @@
34 * Eric Young (eay@cryptsoft.com)" 34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library 35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-). 36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from 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: 38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * 40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -49,7 +49,7 @@
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 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 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE. 51 * SUCH DAMAGE.
52 * 52 *
53 * The licence and distribution terms for any publically available version or 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 54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence 55 * copied and put under another distribution licence
@@ -63,182 +63,178 @@
63 * 64bit block we have used is contained in *num; 63 * 64bit block we have used is contained in *num;
64 */ 64 */
65 65
66void DES_ede3_cfb64_encrypt(const unsigned char *in, unsigned char *out, 66void
67 long length, DES_key_schedule *ks1, 67DES_ede3_cfb64_encrypt(const unsigned char *in, unsigned char *out,
68 DES_key_schedule *ks2, DES_key_schedule *ks3, 68 long length, DES_key_schedule *ks1,
69 DES_cblock *ivec, int *num, int enc) 69 DES_key_schedule *ks2, DES_key_schedule *ks3,
70 { 70 DES_cblock *ivec, int *num, int enc)
71 DES_LONG v0,v1; 71{
72 long l=length; 72 DES_LONG v0, v1;
73 int n= *num; 73 long l = length;
74 int n = *num;
74 DES_LONG ti[2]; 75 DES_LONG ti[2];
75 unsigned char *iv,c,cc; 76 unsigned char *iv, c, cc;
76 77
77 iv=&(*ivec)[0]; 78 iv = &(*ivec)[0];
78 if (enc) 79 if (enc) {
79 { 80 while (l--) {
80 while (l--) 81 if (n == 0) {
81 { 82 c2l(iv, v0);
82 if (n == 0) 83 c2l(iv, v1);
83 {
84 c2l(iv,v0);
85 c2l(iv,v1);
86 84
87 ti[0]=v0; 85 ti[0] = v0;
88 ti[1]=v1; 86 ti[1] = v1;
89 DES_encrypt3(ti,ks1,ks2,ks3); 87 DES_encrypt3(ti, ks1, ks2, ks3);
90 v0=ti[0]; 88 v0 = ti[0];
91 v1=ti[1]; 89 v1 = ti[1];
92 90
93 iv = &(*ivec)[0]; 91 iv = &(*ivec)[0];
94 l2c(v0,iv); 92 l2c(v0, iv);
95 l2c(v1,iv); 93 l2c(v1, iv);
96 iv = &(*ivec)[0]; 94 iv = &(*ivec)[0];
97 }
98 c= *(in++)^iv[n];
99 *(out++)=c;
100 iv[n]=c;
101 n=(n+1)&0x07;
102 } 95 }
96 c = *(in++) ^ iv[n];
97 *(out++) = c;
98 iv[n] = c;
99 n = (n + 1) & 0x07;
103 } 100 }
104 else 101 } else {
105 { 102 while (l--) {
106 while (l--) 103 if (n == 0) {
107 { 104 c2l(iv, v0);
108 if (n == 0) 105 c2l(iv, v1);
109 {
110 c2l(iv,v0);
111 c2l(iv,v1);
112 106
113 ti[0]=v0; 107 ti[0] = v0;
114 ti[1]=v1; 108 ti[1] = v1;
115 DES_encrypt3(ti,ks1,ks2,ks3); 109 DES_encrypt3(ti, ks1, ks2, ks3);
116 v0=ti[0]; 110 v0 = ti[0];
117 v1=ti[1]; 111 v1 = ti[1];
118 112
119 iv = &(*ivec)[0]; 113 iv = &(*ivec)[0];
120 l2c(v0,iv); 114 l2c(v0, iv);
121 l2c(v1,iv); 115 l2c(v1, iv);
122 iv = &(*ivec)[0]; 116 iv = &(*ivec)[0];
123 }
124 cc= *(in++);
125 c=iv[n];
126 iv[n]=cc;
127 *(out++)=c^cc;
128 n=(n+1)&0x07;
129 } 117 }
118 cc = *(in++);
119 c = iv[n];
120 iv[n] = cc;
121 *(out++) = c ^ cc;
122 n = (n + 1) & 0x07;
130 } 123 }
131 v0=v1=ti[0]=ti[1]=c=cc=0;
132 *num=n;
133 } 124 }
125 v0 = v1 = ti[0] = ti[1] = c = cc = 0;
126 *num = n;
127}
134 128
135/* This is compatible with the single key CFB-r for DES, even thought that's 129/* This is compatible with the single key CFB-r for DES, even thought that's
136 * not what EVP needs. 130 * not what EVP needs.
137 */ 131 */
138 132
139void DES_ede3_cfb_encrypt(const unsigned char *in,unsigned char *out, 133void
140 int numbits,long length,DES_key_schedule *ks1, 134DES_ede3_cfb_encrypt(const unsigned char *in, unsigned char *out,
141 DES_key_schedule *ks2,DES_key_schedule *ks3, 135 int numbits, long length, DES_key_schedule *ks1,
142 DES_cblock *ivec,int enc) 136 DES_key_schedule *ks2, DES_key_schedule *ks3,
143 { 137 DES_cblock *ivec, int enc)
144 DES_LONG d0,d1,v0,v1; 138{
145 unsigned long l=length,n=((unsigned int)numbits+7)/8; 139 DES_LONG d0, d1, v0, v1;
146 int num=numbits,i; 140 unsigned long l = length, n = ((unsigned int)numbits + 7)/8;
141 int num = numbits, i;
147 DES_LONG ti[2]; 142 DES_LONG ti[2];
148 unsigned char *iv; 143 unsigned char *iv;
149 unsigned char ovec[16]; 144 unsigned char ovec[16];
150 145
151 if (num > 64) return; 146 if (num > 64)
147 return;
152 iv = &(*ivec)[0]; 148 iv = &(*ivec)[0];
153 c2l(iv,v0); 149 c2l(iv, v0);
154 c2l(iv,v1); 150 c2l(iv, v1);
155 if (enc) 151 if (enc) {
156 { 152 while (l >= n) {
157 while (l >= n) 153 l -= n;
158 { 154 ti[0] = v0;
159 l-=n; 155 ti[1] = v1;
160 ti[0]=v0; 156 DES_encrypt3(ti, ks1, ks2, ks3);
161 ti[1]=v1; 157 c2ln(in, d0, d1, n);
162 DES_encrypt3(ti,ks1,ks2,ks3); 158 in += n;
163 c2ln(in,d0,d1,n); 159 d0 ^= ti[0];
164 in+=n; 160 d1 ^= ti[1];
165 d0^=ti[0]; 161 l2cn(d0, d1, out, n);
166 d1^=ti[1]; 162 out += n;
167 l2cn(d0,d1,out,n);
168 out+=n;
169 /* 30-08-94 - eay - changed because l>>32 and 163 /* 30-08-94 - eay - changed because l>>32 and
170 * l<<32 are bad under gcc :-( */ 164 * l<<32 are bad under gcc :-( */
171 if (num == 32) 165 if (num == 32) {
172 { v0=v1; v1=d0; } 166 v0 = v1;
173 else if (num == 64) 167 v1 = d0;
174 { v0=d0; v1=d1; } 168 } else if (num == 64) {
175 else 169 v0 = d0;
176 { 170 v1 = d1;
177 iv=&ovec[0]; 171 } else {
178 l2c(v0,iv); 172 iv = &ovec[0];
179 l2c(v1,iv); 173 l2c(v0, iv);
180 l2c(d0,iv); 174 l2c(v1, iv);
181 l2c(d1,iv); 175 l2c(d0, iv);
176 l2c(d1, iv);
182 /* shift ovec left most of the bits... */ 177 /* shift ovec left most of the bits... */
183 memmove(ovec,ovec+num/8,8+(num%8 ? 1 : 0)); 178 memmove(ovec, ovec + num/8,
179 8 + (num % 8 ? 1 : 0));
184 /* now the remaining bits */ 180 /* now the remaining bits */
185 if(num%8 != 0) 181 if (num % 8 != 0)
186 for(i=0 ; i < 8 ; ++i) 182 for (i = 0; i < 8; ++i)
187 { 183 {
188 ovec[i]<<=num%8; 184 ovec[i] <<= num % 8;
189 ovec[i]|=ovec[i+1]>>(8-num%8); 185 ovec[i] |= ovec[i + 1] >>
190 } 186 (8 - num % 8);
191 iv=&ovec[0]; 187 }
192 c2l(iv,v0); 188 iv = &ovec[0];
193 c2l(iv,v1); 189 c2l(iv, v0);
194 } 190 c2l(iv, v1);
195 } 191 }
196 } 192 }
197 else 193 } else {
198 { 194 while (l >= n) {
199 while (l >= n) 195 l -= n;
200 { 196 ti[0] = v0;
201 l-=n; 197 ti[1] = v1;
202 ti[0]=v0; 198 DES_encrypt3(ti, ks1, ks2, ks3);
203 ti[1]=v1; 199 c2ln(in, d0, d1, n);
204 DES_encrypt3(ti,ks1,ks2,ks3); 200 in += n;
205 c2ln(in,d0,d1,n);
206 in+=n;
207 /* 30-08-94 - eay - changed because l>>32 and 201 /* 30-08-94 - eay - changed because l>>32 and
208 * l<<32 are bad under gcc :-( */ 202 * l<<32 are bad under gcc :-( */
209 if (num == 32) 203 if (num == 32) {
210 { v0=v1; v1=d0; } 204 v0 = v1;
211 else if (num == 64) 205 v1 = d0;
212 { v0=d0; v1=d1; } 206 } else if (num == 64) {
213 else 207 v0 = d0;
214 { 208 v1 = d1;
215 iv=&ovec[0]; 209 } else {
216 l2c(v0,iv); 210 iv = &ovec[0];
217 l2c(v1,iv); 211 l2c(v0, iv);
218 l2c(d0,iv); 212 l2c(v1, iv);
219 l2c(d1,iv); 213 l2c(d0, iv);
214 l2c(d1, iv);
220 /* shift ovec left most of the bits... */ 215 /* shift ovec left most of the bits... */
221 memmove(ovec,ovec+num/8,8+(num%8 ? 1 : 0)); 216 memmove(ovec, ovec + num/8,
217 8 + (num % 8 ? 1 : 0));
222 /* now the remaining bits */ 218 /* now the remaining bits */
223 if(num%8 != 0) 219 if (num % 8 != 0)
224 for(i=0 ; i < 8 ; ++i) 220 for (i = 0; i < 8; ++i)
225 { 221 {
226 ovec[i]<<=num%8; 222 ovec[i] <<= num % 8;
227 ovec[i]|=ovec[i+1]>>(8-num%8); 223 ovec[i] |= ovec[i + 1] >>
228 } 224 (8 - num % 8);
229 iv=&ovec[0]; 225 }
230 c2l(iv,v0); 226 iv = &ovec[0];
231 c2l(iv,v1); 227 c2l(iv, v0);
232 } 228 c2l(iv, v1);
233 d0^=ti[0];
234 d1^=ti[1];
235 l2cn(d0,d1,out,n);
236 out+=n;
237 } 229 }
230 d0 ^= ti[0];
231 d1 ^= ti[1];
232 l2cn(d0, d1, out, n);
233 out += n;
238 } 234 }
239 iv = &(*ivec)[0];
240 l2c(v0,iv);
241 l2c(v1,iv);
242 v0=v1=d0=d1=ti[0]=ti[1]=0;
243 } 235 }
244 236 iv = &(*ivec)[0];
237 l2c(v0, iv);
238 l2c(v1, iv);
239 v0 = v1 = d0 = d1 = ti[0] = ti[1] = 0;
240}
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