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1 /* rsa_null.c */ | |
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
3 * project 1999. | |
4 */ | |
5 /* ==================================================================== | |
6 * Copyright (c) 1999 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 * This product includes cryptographic software written by Eric Young | |
54 * (eay@cryptsoft.com). This product includes software written by Tim | |
55 * Hudson (tjh@cryptsoft.com). | |
56 * | |
57 */ | |
58 | |
59 #include <stdio.h> | |
60 #include "cryptlib.h" | |
61 #include <openssl/bn.h> | |
62 #include <openssl/rsa.h> | |
63 #include <openssl/rand.h> | |
64 | |
65 /* This is a dummy RSA implementation that just returns errors when called. | |
66 * It is designed to allow some RSA functions to work while stopping those | |
67 * covered by the RSA patent. That is RSA, encryption, decryption, signing | |
68 * and verify is not allowed but RSA key generation, key checking and other | |
69 * operations (like storing RSA keys) are permitted. | |
70 */ | |
71 | |
72 static int RSA_null_public_encrypt(int flen, const unsigned char *from, | |
73 unsigned char *to, RSA *rsa,int padding); | |
74 static int RSA_null_private_encrypt(int flen, const unsigned char *from, | |
75 unsigned char *to, RSA *rsa,int padding); | |
76 static int RSA_null_public_decrypt(int flen, const unsigned char *from, | |
77 unsigned char *to, RSA *rsa,int padding); | |
78 static int RSA_null_private_decrypt(int flen, const unsigned char *from, | |
79 unsigned char *to, RSA *rsa,int padding); | |
80 #if 0 /* not currently used */ | |
81 static int RSA_null_mod_exp(const BIGNUM *r0, const BIGNUM *i, RSA *rsa); | |
82 #endif | |
83 static int RSA_null_init(RSA *rsa); | |
84 static int RSA_null_finish(RSA *rsa); | |
85 static RSA_METHOD rsa_null_meth={ | |
86 "Null RSA", | |
87 RSA_null_public_encrypt, | |
88 RSA_null_public_decrypt, | |
89 RSA_null_private_encrypt, | |
90 RSA_null_private_decrypt, | |
91 NULL, | |
92 NULL, | |
93 RSA_null_init, | |
94 RSA_null_finish, | |
95 0, | |
96 NULL, | |
97 NULL, | |
98 NULL, | |
99 NULL | |
100 }; | |
101 | |
102 const RSA_METHOD *RSA_null_method(void) | |
103 { | |
104 return(&rsa_null_meth); | |
105 } | |
106 | |
107 static int RSA_null_public_encrypt(int flen, const unsigned char *from, | |
108 unsigned char *to, RSA *rsa, int padding) | |
109 { | |
110 RSAerr(RSA_F_RSA_NULL_PUBLIC_ENCRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED
); | |
111 return -1; | |
112 } | |
113 | |
114 static int RSA_null_private_encrypt(int flen, const unsigned char *from, | |
115 unsigned char *to, RSA *rsa, int padding) | |
116 { | |
117 RSAerr(RSA_F_RSA_NULL_PRIVATE_ENCRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTE
D); | |
118 return -1; | |
119 } | |
120 | |
121 static int RSA_null_private_decrypt(int flen, const unsigned char *from, | |
122 unsigned char *to, RSA *rsa, int padding) | |
123 { | |
124 RSAerr(RSA_F_RSA_NULL_PRIVATE_DECRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTE
D); | |
125 return -1; | |
126 } | |
127 | |
128 static int RSA_null_public_decrypt(int flen, const unsigned char *from, | |
129 unsigned char *to, RSA *rsa, int padding) | |
130 { | |
131 RSAerr(RSA_F_RSA_NULL_PUBLIC_DECRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED
); | |
132 return -1; | |
133 } | |
134 | |
135 #if 0 /* not currently used */ | |
136 static int RSA_null_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa) | |
137 { | |
138 ...err(RSA_F_RSA_NULL_MOD_EXP, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED); | |
139 return -1; | |
140 } | |
141 #endif | |
142 | |
143 static int RSA_null_init(RSA *rsa) | |
144 { | |
145 return(1); | |
146 } | |
147 | |
148 static int RSA_null_finish(RSA *rsa) | |
149 { | |
150 return(1); | |
151 } | |
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