Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/rsa/rsa_saos.c |
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1 | /* $OpenBSD: rsa_saos.c,v 1.24 2018/09/05 00:55:33 djm Exp $ */ | - | ||||||
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | - | ||||||
3 | * All rights reserved. | - | ||||||
4 | * | - | ||||||
5 | * This package is an SSL implementation written | - | ||||||
6 | * by Eric Young (eay@cryptsoft.com). | - | ||||||
7 | * The implementation was written so as to conform with Netscapes SSL. | - | ||||||
8 | * | - | ||||||
9 | * This library is free for commercial and non-commercial use as long as | - | ||||||
10 | * the following conditions are aheared to. The following conditions | - | ||||||
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 | - | ||||||
13 | * included with this distribution is covered by the same copyright terms | - | ||||||
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | - | ||||||
15 | * | - | ||||||
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | - | ||||||
17 | * the code are not to be removed. | - | ||||||
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. | - | ||||||
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. | - | ||||||
22 | * | - | ||||||
23 | * Redistribution and use in source and binary forms, with or without | - | ||||||
24 | * modification, are permitted provided that the following conditions | - | ||||||
25 | * are met: | - | ||||||
26 | * 1. Redistributions of source code must retain the copyright | - | ||||||
27 | * notice, this list of conditions and the following disclaimer. | - | ||||||
28 | * 2. Redistributions in binary form must reproduce the above copyright | - | ||||||
29 | * notice, this list of conditions and the following disclaimer in the | - | ||||||
30 | * documentation and/or other materials provided with the distribution. | - | ||||||
31 | * 3. All advertising materials mentioning features or use of this software | - | ||||||
32 | * must display the following acknowledgement: | - | ||||||
33 | * "This product includes cryptographic software written by | - | ||||||
34 | * Eric Young (eay@cryptsoft.com)" | - | ||||||
35 | * The word 'cryptographic' can be left out if the rouines from the library | - | ||||||
36 | * being used are not cryptographic related :-). | - | ||||||
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: | - | ||||||
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | - | ||||||
40 | * | - | ||||||
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | - | ||||||
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | - | ||||||
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | - | ||||||
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | - | ||||||
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | - | ||||||
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | - | ||||||
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | - | ||||||
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | - | ||||||
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 | - | ||||||
51 | * SUCH DAMAGE. | - | ||||||
52 | * | - | ||||||
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 | - | ||||||
55 | * copied and put under another distribution licence | - | ||||||
56 | * [including the GNU Public Licence.] | - | ||||||
57 | */ | - | ||||||
58 | - | |||||||
59 | #include <stdio.h> | - | ||||||
60 | #include <string.h> | - | ||||||
61 | - | |||||||
62 | #include <openssl/bn.h> | - | ||||||
63 | #include <openssl/err.h> | - | ||||||
64 | #include <openssl/objects.h> | - | ||||||
65 | #include <openssl/rsa.h> | - | ||||||
66 | #include <openssl/x509.h> | - | ||||||
67 | - | |||||||
68 | int | - | ||||||
69 | RSA_sign_ASN1_OCTET_STRING(int type, const unsigned char *m, unsigned int m_len, | - | ||||||
70 | unsigned char *sigret, unsigned int *siglen, RSA *rsa) | - | ||||||
71 | { | - | ||||||
72 | ASN1_OCTET_STRING sig; | - | ||||||
73 | int i, j, ret = 1; | - | ||||||
74 | unsigned char *p, *s; | - | ||||||
75 | - | |||||||
76 | sig.type = V_ASN1_OCTET_STRING; | - | ||||||
77 | sig.length = m_len; | - | ||||||
78 | sig.data = (unsigned char *)m; | - | ||||||
79 | - | |||||||
80 | i = i2d_ASN1_OCTET_STRING(&sig, NULL); | - | ||||||
81 | j = RSA_size(rsa); | - | ||||||
82 | if (i > (j - RSA_PKCS1_PADDING_SIZE)) {
| 0 | ||||||
83 | RSAerror(RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY); | - | ||||||
84 | return 0; never executed: return 0; | 0 | ||||||
85 | } | - | ||||||
86 | s = malloc(j + 1); | - | ||||||
87 | if (s == NULL) {
| 0 | ||||||
88 | RSAerror(ERR_R_MALLOC_FAILURE); | - | ||||||
89 | return 0; never executed: return 0; | 0 | ||||||
90 | } | - | ||||||
91 | p = s; | - | ||||||
92 | i2d_ASN1_OCTET_STRING(&sig, &p); | - | ||||||
93 | i = RSA_private_encrypt(i, s, sigret, rsa, RSA_PKCS1_PADDING); | - | ||||||
94 | if (i <= 0)
| 0 | ||||||
95 | ret = 0; never executed: ret = 0; | 0 | ||||||
96 | else | - | ||||||
97 | *siglen = i; never executed: *siglen = i; | 0 | ||||||
98 | - | |||||||
99 | freezero(s, (unsigned int)j + 1); | - | ||||||
100 | return ret; never executed: return ret; | 0 | ||||||
101 | } | - | ||||||
102 | - | |||||||
103 | int | - | ||||||
104 | RSA_verify_ASN1_OCTET_STRING(int dtype, const unsigned char *m, | - | ||||||
105 | unsigned int m_len, unsigned char *sigbuf, unsigned int siglen, RSA *rsa) | - | ||||||
106 | { | - | ||||||
107 | int i, ret = 0; | - | ||||||
108 | unsigned char *s; | - | ||||||
109 | const unsigned char *p; | - | ||||||
110 | ASN1_OCTET_STRING *sig = NULL; | - | ||||||
111 | - | |||||||
112 | if (siglen != (unsigned int)RSA_size(rsa)) {
| 0 | ||||||
113 | RSAerror(RSA_R_WRONG_SIGNATURE_LENGTH); | - | ||||||
114 | return 0; never executed: return 0; | 0 | ||||||
115 | } | - | ||||||
116 | - | |||||||
117 | s = malloc(siglen); | - | ||||||
118 | if (s == NULL) {
| 0 | ||||||
119 | RSAerror(ERR_R_MALLOC_FAILURE); | - | ||||||
120 | goto err; never executed: goto err; | 0 | ||||||
121 | } | - | ||||||
122 | i = RSA_public_decrypt((int)siglen, sigbuf, s, rsa, RSA_PKCS1_PADDING); | - | ||||||
123 | - | |||||||
124 | if (i <= 0)
| 0 | ||||||
125 | goto err; never executed: goto err; | 0 | ||||||
126 | - | |||||||
127 | p = s; | - | ||||||
128 | sig = d2i_ASN1_OCTET_STRING(NULL, &p, (long)i); | - | ||||||
129 | if (sig == NULL)
| 0 | ||||||
130 | goto err; never executed: goto err; | 0 | ||||||
131 | - | |||||||
132 | if ((unsigned int)sig->length != m_len ||
| 0 | ||||||
133 | timingsafe_bcmp(m, sig->data, m_len) != 0) {
| 0 | ||||||
134 | RSAerror(RSA_R_BAD_SIGNATURE); | - | ||||||
135 | } else never executed: end of block | 0 | ||||||
136 | ret = 1; never executed: ret = 1; | 0 | ||||||
137 | err: code before this statement never executed: err: | 0 | ||||||
138 | ASN1_OCTET_STRING_free(sig); | - | ||||||
139 | freezero(s, (unsigned int)siglen); | - | ||||||
140 | return ret; never executed: return ret; | 0 | ||||||
141 | } | - | ||||||
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