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Diffstat (limited to 'src/lib/libcrypto/modes/xts128.c')
-rw-r--r-- | src/lib/libcrypto/modes/xts128.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/src/lib/libcrypto/modes/xts128.c b/src/lib/libcrypto/modes/xts128.c deleted file mode 100644 index 7516acf850..0000000000 --- a/src/lib/libcrypto/modes/xts128.c +++ /dev/null | |||
@@ -1,197 +0,0 @@ | |||
1 | /* $OpenBSD: xts128.c,v 1.12 2023/07/08 14:56:54 beck Exp $ */ | ||
2 | /* ==================================================================== | ||
3 | * Copyright (c) 2011 The OpenSSL Project. All rights reserved. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions | ||
7 | * are met: | ||
8 | * | ||
9 | * 1. Redistributions of source code must retain the above copyright | ||
10 | * notice, this list of conditions and the following disclaimer. | ||
11 | * | ||
12 | * 2. Redistributions in binary form must reproduce the above copyright | ||
13 | * notice, this list of conditions and the following disclaimer in | ||
14 | * the documentation and/or other materials provided with the | ||
15 | * distribution. | ||
16 | * | ||
17 | * 3. All advertising materials mentioning features or use of this | ||
18 | * software must display the following acknowledgment: | ||
19 | * "This product includes software developed by the OpenSSL Project | ||
20 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | ||
21 | * | ||
22 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | ||
23 | * endorse or promote products derived from this software without | ||
24 | * prior written permission. For written permission, please contact | ||
25 | * openssl-core@openssl.org. | ||
26 | * | ||
27 | * 5. Products derived from this software may not be called "OpenSSL" | ||
28 | * nor may "OpenSSL" appear in their names without prior written | ||
29 | * permission of the OpenSSL Project. | ||
30 | * | ||
31 | * 6. Redistributions of any form whatsoever must retain the following | ||
32 | * acknowledgment: | ||
33 | * "This product includes software developed by the OpenSSL Project | ||
34 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | ||
35 | * | ||
36 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | ||
37 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
38 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
39 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | ||
40 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
41 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
42 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
43 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
44 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | ||
45 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
46 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | ||
47 | * OF THE POSSIBILITY OF SUCH DAMAGE. | ||
48 | * ==================================================================== | ||
49 | */ | ||
50 | |||
51 | #include <openssl/crypto.h> | ||
52 | #include "modes_local.h" | ||
53 | |||
54 | #include <endian.h> | ||
55 | #include <string.h> | ||
56 | |||
57 | #ifndef MODES_DEBUG | ||
58 | # ifndef NDEBUG | ||
59 | # define NDEBUG | ||
60 | # endif | ||
61 | #endif | ||
62 | |||
63 | int | ||
64 | CRYPTO_xts128_encrypt(const XTS128_CONTEXT *ctx, const unsigned char iv[16], | ||
65 | const unsigned char *inp, unsigned char *out, | ||
66 | size_t len, int enc) | ||
67 | { | ||
68 | union { | ||
69 | u64 u[2]; | ||
70 | u32 d[4]; | ||
71 | u8 c[16]; | ||
72 | } tweak, scratch; | ||
73 | unsigned int i; | ||
74 | |||
75 | if (len < 16) | ||
76 | return -1; | ||
77 | |||
78 | memcpy(tweak.c, iv, 16); | ||
79 | |||
80 | (*ctx->block2)(tweak.c, tweak.c, ctx->key2); | ||
81 | |||
82 | if (!enc && (len % 16)) | ||
83 | len -= 16; | ||
84 | |||
85 | while (len >= 16) { | ||
86 | #ifdef __STRICT_ALIGNMENT | ||
87 | memcpy(scratch.c, inp, 16); | ||
88 | scratch.u[0] ^= tweak.u[0]; | ||
89 | scratch.u[1] ^= tweak.u[1]; | ||
90 | #else | ||
91 | scratch.u[0] = ((u64 *)inp)[0] ^ tweak.u[0]; | ||
92 | scratch.u[1] = ((u64 *)inp)[1] ^ tweak.u[1]; | ||
93 | #endif | ||
94 | (*ctx->block1)(scratch.c, scratch.c, ctx->key1); | ||
95 | #ifdef __STRICT_ALIGNMENT | ||
96 | scratch.u[0] ^= tweak.u[0]; | ||
97 | scratch.u[1] ^= tweak.u[1]; | ||
98 | memcpy(out, scratch.c, 16); | ||
99 | #else | ||
100 | ((u64 *)out)[0] = scratch.u[0] ^= tweak.u[0]; | ||
101 | ((u64 *)out)[1] = scratch.u[1] ^= tweak.u[1]; | ||
102 | #endif | ||
103 | inp += 16; | ||
104 | out += 16; | ||
105 | len -= 16; | ||
106 | |||
107 | if (len == 0) | ||
108 | return 0; | ||
109 | |||
110 | #if BYTE_ORDER == LITTLE_ENDIAN | ||
111 | unsigned int carry, res; | ||
112 | |||
113 | res = 0x87 & (((int)tweak.d[3]) >> 31); | ||
114 | carry = (unsigned int)(tweak.u[0] >> 63); | ||
115 | tweak.u[0] = (tweak.u[0] << 1) ^ res; | ||
116 | tweak.u[1] = (tweak.u[1] << 1)|carry; | ||
117 | #else /* BIG_ENDIAN */ | ||
118 | size_t c; | ||
119 | |||
120 | for (c = 0, i = 0; i < 16; ++i) { | ||
121 | /*+ substitutes for |, because c is 1 bit */ | ||
122 | c += ((size_t)tweak.c[i]) << 1; | ||
123 | tweak.c[i] = (u8)c; | ||
124 | c = c >> 8; | ||
125 | } | ||
126 | tweak.c[0] ^= (u8)(0x87 & (0 - c)); | ||
127 | #endif | ||
128 | } | ||
129 | if (enc) { | ||
130 | for (i = 0; i < len; ++i) { | ||
131 | u8 ch = inp[i]; | ||
132 | out[i] = scratch.c[i]; | ||
133 | scratch.c[i] = ch; | ||
134 | } | ||
135 | scratch.u[0] ^= tweak.u[0]; | ||
136 | scratch.u[1] ^= tweak.u[1]; | ||
137 | (*ctx->block1)(scratch.c, scratch.c, ctx->key1); | ||
138 | scratch.u[0] ^= tweak.u[0]; | ||
139 | scratch.u[1] ^= tweak.u[1]; | ||
140 | memcpy(out - 16, scratch.c, 16); | ||
141 | } else { | ||
142 | union { | ||
143 | u64 u[2]; | ||
144 | u8 c[16]; | ||
145 | } tweak1; | ||
146 | |||
147 | #if BYTE_ORDER == LITTLE_ENDIAN | ||
148 | unsigned int carry, res; | ||
149 | |||
150 | res = 0x87 & (((int)tweak.d[3]) >> 31); | ||
151 | carry = (unsigned int)(tweak.u[0] >> 63); | ||
152 | tweak1.u[0] = (tweak.u[0] << 1) ^ res; | ||
153 | tweak1.u[1] = (tweak.u[1] << 1)|carry; | ||
154 | #else | ||
155 | size_t c; | ||
156 | |||
157 | for (c = 0, i = 0; i < 16; ++i) { | ||
158 | /*+ substitutes for |, because c is 1 bit */ | ||
159 | c += ((size_t)tweak.c[i]) << 1; | ||
160 | tweak1.c[i] = (u8)c; | ||
161 | c = c >> 8; | ||
162 | } | ||
163 | tweak1.c[0] ^= (u8)(0x87 & (0 - c)); | ||
164 | #endif | ||
165 | #ifdef __STRICT_ALIGNMENT | ||
166 | memcpy(scratch.c, inp, 16); | ||
167 | scratch.u[0] ^= tweak1.u[0]; | ||
168 | scratch.u[1] ^= tweak1.u[1]; | ||
169 | #else | ||
170 | scratch.u[0] = ((u64 *)inp)[0] ^ tweak1.u[0]; | ||
171 | scratch.u[1] = ((u64 *)inp)[1] ^ tweak1.u[1]; | ||
172 | #endif | ||
173 | (*ctx->block1)(scratch.c, scratch.c, ctx->key1); | ||
174 | scratch.u[0] ^= tweak1.u[0]; | ||
175 | scratch.u[1] ^= tweak1.u[1]; | ||
176 | |||
177 | for (i = 0; i < len; ++i) { | ||
178 | u8 ch = inp[16 + i]; | ||
179 | out[16 + i] = scratch.c[i]; | ||
180 | scratch.c[i] = ch; | ||
181 | } | ||
182 | scratch.u[0] ^= tweak.u[0]; | ||
183 | scratch.u[1] ^= tweak.u[1]; | ||
184 | (*ctx->block1)(scratch.c, scratch.c, ctx->key1); | ||
185 | #ifdef __STRICT_ALIGNMENT | ||
186 | scratch.u[0] ^= tweak.u[0]; | ||
187 | scratch.u[1] ^= tweak.u[1]; | ||
188 | memcpy(out, scratch.c, 16); | ||
189 | #else | ||
190 | ((u64 *)out)[0] = scratch.u[0] ^ tweak.u[0]; | ||
191 | ((u64 *)out)[1] = scratch.u[1] ^ tweak.u[1]; | ||
192 | #endif | ||
193 | } | ||
194 | |||
195 | return 0; | ||
196 | } | ||
197 | LCRYPTO_ALIAS(CRYPTO_xts128_encrypt); | ||