Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/aes/aes_wrap.c |
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1 | /* $OpenBSD: aes_wrap.c,v 1.10 2015/09/10 15:56:24 jsing Exp $ */ | - | ||||||||||||
2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | - | ||||||||||||
3 | * project. | - | ||||||||||||
4 | */ | - | ||||||||||||
5 | /* ==================================================================== | - | ||||||||||||
6 | * Copyright (c) 2008 The OpenSSL Project. All rights reserved. | - | ||||||||||||
7 | * | - | ||||||||||||
8 | * Redistribution and use in source and binary forms, with or without | - | ||||||||||||
9 | * modification, are permitted provided that the following conditions | - | ||||||||||||
10 | * are met: | - | ||||||||||||
11 | * | - | ||||||||||||
12 | * 1. Redistributions of source code must retain the above copyright | - | ||||||||||||
13 | * notice, this list of conditions and the following disclaimer. | - | ||||||||||||
14 | * | - | ||||||||||||
15 | * 2. Redistributions in binary form must reproduce the above copyright | - | ||||||||||||
16 | * notice, this list of conditions and the following disclaimer in | - | ||||||||||||
17 | * the documentation and/or other materials provided with the | - | ||||||||||||
18 | * distribution. | - | ||||||||||||
19 | * | - | ||||||||||||
20 | * 3. All advertising materials mentioning features or use of this | - | ||||||||||||
21 | * software must display the following acknowledgment: | - | ||||||||||||
22 | * "This product includes software developed by the OpenSSL Project | - | ||||||||||||
23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | - | ||||||||||||
24 | * | - | ||||||||||||
25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | - | ||||||||||||
26 | * endorse or promote products derived from this software without | - | ||||||||||||
27 | * prior written permission. For written permission, please contact | - | ||||||||||||
28 | * licensing@OpenSSL.org. | - | ||||||||||||
29 | * | - | ||||||||||||
30 | * 5. Products derived from this software may not be called "OpenSSL" | - | ||||||||||||
31 | * nor may "OpenSSL" appear in their names without prior written | - | ||||||||||||
32 | * permission of the OpenSSL Project. | - | ||||||||||||
33 | * | - | ||||||||||||
34 | * 6. Redistributions of any form whatsoever must retain the following | - | ||||||||||||
35 | * acknowledgment: | - | ||||||||||||
36 | * "This product includes software developed by the OpenSSL Project | - | ||||||||||||
37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | - | ||||||||||||
38 | * | - | ||||||||||||
39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | - | ||||||||||||
40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | - | ||||||||||||
41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | - | ||||||||||||
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | - | ||||||||||||
43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | - | ||||||||||||
44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | - | ||||||||||||
45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | - | ||||||||||||
46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | - | ||||||||||||
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | - | ||||||||||||
48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | - | ||||||||||||
49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | - | ||||||||||||
50 | * OF THE POSSIBILITY OF SUCH DAMAGE. | - | ||||||||||||
51 | * ==================================================================== | - | ||||||||||||
52 | */ | - | ||||||||||||
53 | - | |||||||||||||
54 | #include <string.h> | - | ||||||||||||
55 | - | |||||||||||||
56 | #include <openssl/aes.h> | - | ||||||||||||
57 | #include <openssl/bio.h> | - | ||||||||||||
58 | - | |||||||||||||
59 | static const unsigned char default_iv[] = { | - | ||||||||||||
60 | 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, | - | ||||||||||||
61 | }; | - | ||||||||||||
62 | - | |||||||||||||
63 | int | - | ||||||||||||
64 | AES_wrap_key(AES_KEY *key, const unsigned char *iv, unsigned char *out, | - | ||||||||||||
65 | const unsigned char *in, unsigned int inlen) | - | ||||||||||||
66 | { | - | ||||||||||||
67 | unsigned char *A, B[16], *R; | - | ||||||||||||
68 | unsigned int i, j, t; | - | ||||||||||||
69 | if ((inlen & 0x7) || (inlen < 8))
| 0-6 | ||||||||||||
70 | return -1; never executed: return -1; | 0 | ||||||||||||
71 | A = B; | - | ||||||||||||
72 | t = 1; | - | ||||||||||||
73 | memcpy(out + 8, in, inlen); | - | ||||||||||||
74 | if (!iv)
| 0-6 | ||||||||||||
75 | iv = default_iv; executed 6 times by 1 test: iv = default_iv; Executed by:
| 6 | ||||||||||||
76 | - | |||||||||||||
77 | memcpy(A, iv, 8); | - | ||||||||||||
78 | - | |||||||||||||
79 | for (j = 0; j < 6; j++) {
| 6-36 | ||||||||||||
80 | R = out + 8; | - | ||||||||||||
81 | for (i = 0; i < inlen; i += 8, t++, R += 8) {
| 36-96 | ||||||||||||
82 | memcpy(B + 8, R, 8); | - | ||||||||||||
83 | AES_encrypt(B, B, key); | - | ||||||||||||
84 | A[7] ^= (unsigned char)(t & 0xff); | - | ||||||||||||
85 | if (t > 0xff) {
| 0-96 | ||||||||||||
86 | A[6] ^= (unsigned char)((t >> 8) & 0xff); | - | ||||||||||||
87 | A[5] ^= (unsigned char)((t >> 16) & 0xff); | - | ||||||||||||
88 | A[4] ^= (unsigned char)((t >> 24) & 0xff); | - | ||||||||||||
89 | } never executed: end of block | 0 | ||||||||||||
90 | memcpy(R, B + 8, 8); | - | ||||||||||||
91 | } executed 96 times by 1 test: end of block Executed by:
| 96 | ||||||||||||
92 | } executed 36 times by 1 test: end of block Executed by:
| 36 | ||||||||||||
93 | memcpy(out, A, 8); | - | ||||||||||||
94 | return inlen + 8; executed 6 times by 1 test: return inlen + 8; Executed by:
| 6 | ||||||||||||
95 | } | - | ||||||||||||
96 | - | |||||||||||||
97 | int | - | ||||||||||||
98 | AES_unwrap_key(AES_KEY *key, const unsigned char *iv, unsigned char *out, | - | ||||||||||||
99 | const unsigned char *in, unsigned int inlen) | - | ||||||||||||
100 | { | - | ||||||||||||
101 | unsigned char *A, B[16], *R; | - | ||||||||||||
102 | unsigned int i, j, t; | - | ||||||||||||
103 | inlen -= 8; | - | ||||||||||||
104 | if (inlen & 0x7)
| 0-6 | ||||||||||||
105 | return -1; never executed: return -1; | 0 | ||||||||||||
106 | if (inlen < 8)
| 0-6 | ||||||||||||
107 | return -1; never executed: return -1; | 0 | ||||||||||||
108 | A = B; | - | ||||||||||||
109 | t = 6 * (inlen >> 3); | - | ||||||||||||
110 | memcpy(A, in, 8); | - | ||||||||||||
111 | memcpy(out, in + 8, inlen); | - | ||||||||||||
112 | for (j = 0; j < 6; j++) {
| 6-36 | ||||||||||||
113 | R = out + inlen - 8; | - | ||||||||||||
114 | for (i = 0; i < inlen; i += 8, t--, R -= 8) {
| 36-96 | ||||||||||||
115 | A[7] ^= (unsigned char)(t & 0xff); | - | ||||||||||||
116 | if (t > 0xff) {
| 0-96 | ||||||||||||
117 | A[6] ^= (unsigned char)((t >> 8) & 0xff); | - | ||||||||||||
118 | A[5] ^= (unsigned char)((t >> 16) & 0xff); | - | ||||||||||||
119 | A[4] ^= (unsigned char)((t >> 24) & 0xff); | - | ||||||||||||
120 | } never executed: end of block | 0 | ||||||||||||
121 | memcpy(B + 8, R, 8); | - | ||||||||||||
122 | AES_decrypt(B, B, key); | - | ||||||||||||
123 | memcpy(R, B + 8, 8); | - | ||||||||||||
124 | } executed 96 times by 1 test: end of block Executed by:
| 96 | ||||||||||||
125 | } executed 36 times by 1 test: end of block Executed by:
| 36 | ||||||||||||
126 | if (!iv)
| 0-6 | ||||||||||||
127 | iv = default_iv; executed 6 times by 1 test: iv = default_iv; Executed by:
| 6 | ||||||||||||
128 | if (memcmp(A, iv, 8)) {
| 0-6 | ||||||||||||
129 | explicit_bzero(out, inlen); | - | ||||||||||||
130 | return 0; never executed: return 0; | 0 | ||||||||||||
131 | } | - | ||||||||||||
132 | return inlen; executed 6 times by 1 test: return inlen; Executed by:
| 6 | ||||||||||||
133 | } | - | ||||||||||||
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