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authorjsing <>2023-07-08 07:25:43 +0000
committerjsing <>2023-07-08 07:25:43 +0000
commit903dc2a64c29e2f25074485b7e91d9844296b1f3 (patch)
tree62f8b433574e4f04b2602a55200cbb3ef37b48f0 /src/lib/libcrypto/cast/c_enc.c
parent605061cd51d735c05fdfe92ab4ec68dd715c2deb (diff)
downloadopenbsd-903dc2a64c29e2f25074485b7e91d9844296b1f3.tar.gz
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Hit cast with the style(9) stick.
Diffstat (limited to 'src/lib/libcrypto/cast/c_enc.c')
-rw-r--r--src/lib/libcrypto/cast/c_enc.c272
1 files changed, 133 insertions, 139 deletions
diff --git a/src/lib/libcrypto/cast/c_enc.c b/src/lib/libcrypto/cast/c_enc.c
index cc28991bd2..70cad75f31 100644
--- a/src/lib/libcrypto/cast/c_enc.c
+++ b/src/lib/libcrypto/cast/c_enc.c
@@ -1,25 +1,25 @@
1/* $OpenBSD: c_enc.c,v 1.8 2022/11/26 16:08:51 tb Exp $ */ 1/* $OpenBSD: c_enc.c,v 1.9 2023/07/08 07:25:43 jsing 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
@@ -60,151 +60,145 @@
60#include "cast_local.h" 60#include "cast_local.h"
61 61
62#ifndef OPENBSD_CAST_ASM 62#ifndef OPENBSD_CAST_ASM
63void CAST_encrypt(CAST_LONG *data, const CAST_KEY *key) 63void
64 { 64CAST_encrypt(CAST_LONG *data, const CAST_KEY *key)
65 CAST_LONG l,r,t; 65{
66 CAST_LONG l, r, t;
66 const CAST_LONG *k; 67 const CAST_LONG *k;
67 68
68 k= &(key->data[0]); 69 k = &(key->data[0]);
69 l=data[0]; 70 l = data[0];
70 r=data[1]; 71 r = data[1];
71
72 E_CAST( 0,k,l,r,+,^,-);
73 E_CAST( 1,k,r,l,^,-,+);
74 E_CAST( 2,k,l,r,-,+,^);
75 E_CAST( 3,k,r,l,+,^,-);
76 E_CAST( 4,k,l,r,^,-,+);
77 E_CAST( 5,k,r,l,-,+,^);
78 E_CAST( 6,k,l,r,+,^,-);
79 E_CAST( 7,k,r,l,^,-,+);
80 E_CAST( 8,k,l,r,-,+,^);
81 E_CAST( 9,k,r,l,+,^,-);
82 E_CAST(10,k,l,r,^,-,+);
83 E_CAST(11,k,r,l,-,+,^);
84 if(!key->short_key)
85 {
86 E_CAST(12,k,l,r,+,^,-);
87 E_CAST(13,k,r,l,^,-,+);
88 E_CAST(14,k,l,r,-,+,^);
89 E_CAST(15,k,r,l,+,^,-);
90 }
91 72
92 data[1]=l&0xffffffffL; 73 E_CAST( 0, k,l, r,+,^, -);
93 data[0]=r&0xffffffffL; 74 E_CAST( 1, k,r, l,^, -,+);
75 E_CAST( 2, k,l, r, -,+,^);
76 E_CAST( 3, k,r, l,+,^, -);
77 E_CAST( 4, k,l, r,^, -,+);
78 E_CAST( 5, k,r, l, -,+,^);
79 E_CAST( 6, k,l, r,+,^, -);
80 E_CAST( 7, k,r, l,^, -,+);
81 E_CAST( 8, k,l, r, -,+,^);
82 E_CAST( 9, k,r, l,+,^, -);
83 E_CAST(10, k,l, r,^, -,+);
84 E_CAST(11, k,r, l, -,+,^);
85 if (!key->short_key) {
86 E_CAST(12, k,l, r,+,^, -);
87 E_CAST(13, k,r, l,^, -,+);
88 E_CAST(14, k,l, r, -,+,^);
89 E_CAST(15, k,r, l,+,^, -);
94 } 90 }
95 91
96void CAST_decrypt(CAST_LONG *data, const CAST_KEY *key) 92 data[1] = l&0xffffffffL;
97 { 93 data[0] = r&0xffffffffL;
98 CAST_LONG l,r,t; 94}
99 const CAST_LONG *k;
100 95
101 k= &(key->data[0]); 96void
102 l=data[0]; 97CAST_decrypt(CAST_LONG *data, const CAST_KEY *key)
103 r=data[1]; 98{
99 CAST_LONG l, r, t;
100 const CAST_LONG *k;
104 101
105 if(!key->short_key) 102 k = &(key->data[0]);
106 { 103 l = data[0];
107 E_CAST(15,k,l,r,+,^,-); 104 r = data[1];
108 E_CAST(14,k,r,l,-,+,^);
109 E_CAST(13,k,l,r,^,-,+);
110 E_CAST(12,k,r,l,+,^,-);
111 }
112 E_CAST(11,k,l,r,-,+,^);
113 E_CAST(10,k,r,l,^,-,+);
114 E_CAST( 9,k,l,r,+,^,-);
115 E_CAST( 8,k,r,l,-,+,^);
116 E_CAST( 7,k,l,r,^,-,+);
117 E_CAST( 6,k,r,l,+,^,-);
118 E_CAST( 5,k,l,r,-,+,^);
119 E_CAST( 4,k,r,l,^,-,+);
120 E_CAST( 3,k,l,r,+,^,-);
121 E_CAST( 2,k,r,l,-,+,^);
122 E_CAST( 1,k,l,r,^,-,+);
123 E_CAST( 0,k,r,l,+,^,-);
124 105
125 data[1]=l&0xffffffffL; 106 if (!key->short_key) {
126 data[0]=r&0xffffffffL; 107 E_CAST(15, k,l, r,+,^, -);
108 E_CAST(14, k,r, l, -,+,^);
109 E_CAST(13, k,l, r,^, -,+);
110 E_CAST(12, k,r, l,+,^, -);
127 } 111 }
112 E_CAST(11, k,l, r, -,+,^);
113 E_CAST(10, k,r, l,^, -,+);
114 E_CAST( 9, k,l, r,+,^, -);
115 E_CAST( 8, k,r, l, -,+,^);
116 E_CAST( 7, k,l, r,^, -,+);
117 E_CAST( 6, k,r, l,+,^, -);
118 E_CAST( 5, k,l, r, -,+,^);
119 E_CAST( 4, k,r, l,^, -,+);
120 E_CAST( 3, k,l, r,+,^, -);
121 E_CAST( 2, k,r, l, -,+,^);
122 E_CAST( 1, k,l, r,^, -,+);
123 E_CAST( 0, k,r, l,+,^, -);
124
125 data[1] = l&0xffffffffL;
126 data[0] = r&0xffffffffL;
127}
128#endif 128#endif
129 129
130void CAST_cbc_encrypt(const unsigned char *in, unsigned char *out, long length, 130void
131 const CAST_KEY *ks, unsigned char *iv, int enc) 131CAST_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
132 { 132 const CAST_KEY *ks, unsigned char *iv, int enc)
133 CAST_LONG tin0,tin1; 133{
134 CAST_LONG tout0,tout1,xor0,xor1; 134 CAST_LONG tin0, tin1;
135 long l=length; 135 CAST_LONG tout0, tout1, xor0, xor1;
136 long l = length;
136 CAST_LONG tin[2]; 137 CAST_LONG tin[2];
137 138
138 if (enc) 139 if (enc) {
139 { 140 n2l(iv, tout0);
140 n2l(iv,tout0); 141 n2l(iv, tout1);
141 n2l(iv,tout1); 142 iv -= 8;
142 iv-=8; 143 for (l -= 8; l >= 0; l -= 8) {
143 for (l-=8; l>=0; l-=8) 144 n2l(in, tin0);
144 { 145 n2l(in, tin1);
145 n2l(in,tin0); 146 tin0 ^= tout0;
146 n2l(in,tin1); 147 tin1 ^= tout1;
147 tin0^=tout0; 148 tin[0] = tin0;
148 tin1^=tout1; 149 tin[1] = tin1;
149 tin[0]=tin0; 150 CAST_encrypt(tin, ks);
150 tin[1]=tin1; 151 tout0 = tin[0];
151 CAST_encrypt(tin,ks); 152 tout1 = tin[1];
152 tout0=tin[0]; 153 l2n(tout0, out);
153 tout1=tin[1]; 154 l2n(tout1, out);
154 l2n(tout0,out); 155 }
155 l2n(tout1,out); 156 if (l != -8) {
156 } 157 n2ln(in, tin0, tin1, l + 8);
157 if (l != -8) 158 tin0 ^= tout0;
158 { 159 tin1 ^= tout1;
159 n2ln(in,tin0,tin1,l+8); 160 tin[0] = tin0;
160 tin0^=tout0; 161 tin[1] = tin1;
161 tin1^=tout1; 162 CAST_encrypt(tin, ks);
162 tin[0]=tin0; 163 tout0 = tin[0];
163 tin[1]=tin1; 164 tout1 = tin[1];
164 CAST_encrypt(tin,ks); 165 l2n(tout0, out);
165 tout0=tin[0]; 166 l2n(tout1, out);
166 tout1=tin[1]; 167 }
167 l2n(tout0,out); 168 l2n(tout0, iv);
168 l2n(tout1,out); 169 l2n(tout1, iv);
169 } 170 } else {
170 l2n(tout0,iv); 171 n2l(iv, xor0);
171 l2n(tout1,iv); 172 n2l(iv, xor1);
173 iv -= 8;
174 for (l -= 8; l >= 0; l -= 8) {
175 n2l(in, tin0);
176 n2l(in, tin1);
177 tin[0] = tin0;
178 tin[1] = tin1;
179 CAST_decrypt(tin, ks);
180 tout0 = tin[0]^xor0;
181 tout1 = tin[1]^xor1;
182 l2n(tout0, out);
183 l2n(tout1, out);
184 xor0 = tin0;
185 xor1 = tin1;
172 } 186 }
173 else 187 if (l != -8) {
174 { 188 n2l(in, tin0);
175 n2l(iv,xor0); 189 n2l(in, tin1);
176 n2l(iv,xor1); 190 tin[0] = tin0;
177 iv-=8; 191 tin[1] = tin1;
178 for (l-=8; l>=0; l-=8) 192 CAST_decrypt(tin, ks);
179 { 193 tout0 = tin[0]^xor0;
180 n2l(in,tin0); 194 tout1 = tin[1]^xor1;
181 n2l(in,tin1); 195 l2nn(tout0, tout1, out, l + 8);
182 tin[0]=tin0; 196 xor0 = tin0;
183 tin[1]=tin1; 197 xor1 = tin1;
184 CAST_decrypt(tin,ks);
185 tout0=tin[0]^xor0;
186 tout1=tin[1]^xor1;
187 l2n(tout0,out);
188 l2n(tout1,out);
189 xor0=tin0;
190 xor1=tin1;
191 }
192 if (l != -8)
193 {
194 n2l(in,tin0);
195 n2l(in,tin1);
196 tin[0]=tin0;
197 tin[1]=tin1;
198 CAST_decrypt(tin,ks);
199 tout0=tin[0]^xor0;
200 tout1=tin[1]^xor1;
201 l2nn(tout0,tout1,out,l+8);
202 xor0=tin0;
203 xor1=tin1;
204 }
205 l2n(xor0,iv);
206 l2n(xor1,iv);
207 } 198 }
208 tin0=tin1=tout0=tout1=xor0=xor1=0; 199 l2n(xor0, iv);
209 tin[0]=tin[1]=0; 200 l2n(xor1, iv);
210 } 201 }
202 tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
203 tin[0] = tin[1] = 0;
204}