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4a61a64f | 1 | /* rsa_null.c */ |
40720ce3 MC |
2 | /* |
3 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project | |
4 | * 1999. | |
4a61a64f DSH |
5 | */ |
6 | /* ==================================================================== | |
7 | * Copyright (c) 1999 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
40720ce3 | 14 | * notice, this list of conditions and the following disclaimer. |
4a61a64f DSH |
15 | * |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in | |
18 | * the documentation and/or other materials provided with the | |
19 | * distribution. | |
20 | * | |
21 | * 3. All advertising materials mentioning features or use of this | |
22 | * software must display the following acknowledgment: | |
23 | * "This product includes software developed by the OpenSSL Project | |
24 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
25 | * | |
26 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
27 | * endorse or promote products derived from this software without | |
28 | * prior written permission. For written permission, please contact | |
29 | * licensing@OpenSSL.org. | |
30 | * | |
31 | * 5. Products derived from this software may not be called "OpenSSL" | |
32 | * nor may "OpenSSL" appear in their names without prior written | |
33 | * permission of the OpenSSL Project. | |
34 | * | |
35 | * 6. Redistributions of any form whatsoever must retain the following | |
36 | * acknowledgment: | |
37 | * "This product includes software developed by the OpenSSL Project | |
38 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
39 | * | |
40 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
41 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
43 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
44 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
45 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
46 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
47 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
49 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
50 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
51 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
52 | * ==================================================================== | |
53 | * | |
54 | * This product includes cryptographic software written by Eric Young | |
0d64ea89 | 55 | * (eay@cryptsoft.com). This product includes software written by Tim |
4a61a64f DSH |
56 | * Hudson (tjh@cryptsoft.com). |
57 | * | |
58 | */ | |
59 | ||
60 | #include <stdio.h> | |
61 | #include "cryptlib.h" | |
62 | #include <openssl/bn.h> | |
63 | #include <openssl/rsa.h> | |
64 | #include <openssl/rand.h> | |
65 | ||
40720ce3 MC |
66 | /* |
67 | * This is a dummy RSA implementation that just returns errors when called. | |
4a61a64f DSH |
68 | * It is designed to allow some RSA functions to work while stopping those |
69 | * covered by the RSA patent. That is RSA, encryption, decryption, signing | |
70 | * and verify is not allowed but RSA key generation, key checking and other | |
71 | * operations (like storing RSA keys) are permitted. | |
72 | */ | |
73 | ||
29c1f061 | 74 | static int RSA_null_public_encrypt(int flen, const unsigned char *from, |
40720ce3 | 75 | unsigned char *to, RSA *rsa, int padding); |
29c1f061 | 76 | static int RSA_null_private_encrypt(int flen, const unsigned char *from, |
40720ce3 | 77 | unsigned char *to, RSA *rsa, int padding); |
29c1f061 | 78 | static int RSA_null_public_decrypt(int flen, const unsigned char *from, |
40720ce3 | 79 | unsigned char *to, RSA *rsa, int padding); |
29c1f061 | 80 | static int RSA_null_private_decrypt(int flen, const unsigned char *from, |
40720ce3 MC |
81 | unsigned char *to, RSA *rsa, int padding); |
82 | #if 0 /* not currently used */ | |
29c1f061 | 83 | static int RSA_null_mod_exp(const BIGNUM *r0, const BIGNUM *i, RSA *rsa); |
d680ba86 | 84 | #endif |
4a61a64f DSH |
85 | static int RSA_null_init(RSA *rsa); |
86 | static int RSA_null_finish(RSA *rsa); | |
40720ce3 MC |
87 | static RSA_METHOD rsa_null_meth = { |
88 | "Null RSA", | |
89 | RSA_null_public_encrypt, | |
90 | RSA_null_public_decrypt, | |
91 | RSA_null_private_encrypt, | |
92 | RSA_null_private_decrypt, | |
93 | NULL, | |
94 | NULL, | |
95 | RSA_null_init, | |
96 | RSA_null_finish, | |
97 | 0, | |
98 | NULL, | |
99 | NULL, | |
100 | NULL, | |
101 | NULL | |
102 | }; | |
4a61a64f | 103 | |
7be7c2ed | 104 | const RSA_METHOD *RSA_null_method(void) |
40720ce3 MC |
105 | { |
106 | return (&rsa_null_meth); | |
107 | } | |
4a61a64f | 108 | |
29c1f061 | 109 | static int RSA_null_public_encrypt(int flen, const unsigned char *from, |
40720ce3 MC |
110 | unsigned char *to, RSA *rsa, int padding) |
111 | { | |
112 | RSAerr(RSA_F_RSA_NULL_PUBLIC_ENCRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED); | |
113 | return -1; | |
114 | } | |
4a61a64f | 115 | |
29c1f061 | 116 | static int RSA_null_private_encrypt(int flen, const unsigned char *from, |
40720ce3 MC |
117 | unsigned char *to, RSA *rsa, int padding) |
118 | { | |
119 | RSAerr(RSA_F_RSA_NULL_PRIVATE_ENCRYPT, | |
120 | RSA_R_RSA_OPERATIONS_NOT_SUPPORTED); | |
121 | return -1; | |
122 | } | |
4a61a64f | 123 | |
29c1f061 | 124 | static int RSA_null_private_decrypt(int flen, const unsigned char *from, |
40720ce3 MC |
125 | unsigned char *to, RSA *rsa, int padding) |
126 | { | |
127 | RSAerr(RSA_F_RSA_NULL_PRIVATE_DECRYPT, | |
128 | RSA_R_RSA_OPERATIONS_NOT_SUPPORTED); | |
129 | return -1; | |
130 | } | |
4a61a64f | 131 | |
29c1f061 | 132 | static int RSA_null_public_decrypt(int flen, const unsigned char *from, |
40720ce3 MC |
133 | unsigned char *to, RSA *rsa, int padding) |
134 | { | |
135 | RSAerr(RSA_F_RSA_NULL_PUBLIC_DECRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED); | |
136 | return -1; | |
137 | } | |
4a61a64f | 138 | |
40720ce3 | 139 | #if 0 /* not currently used */ |
4a61a64f | 140 | static int RSA_null_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa) |
40720ce3 MC |
141 | { |
142 | ... err(RSA_F_RSA_NULL_MOD_EXP, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED); | |
143 | return -1; | |
144 | } | |
d680ba86 | 145 | #endif |
4a61a64f DSH |
146 | |
147 | static int RSA_null_init(RSA *rsa) | |
40720ce3 MC |
148 | { |
149 | return (1); | |
150 | } | |
4a61a64f DSH |
151 | |
152 | static int RSA_null_finish(RSA *rsa) | |
40720ce3 MC |
153 | { |
154 | return (1); | |
155 | } |