3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
62 #include <openssl/bn.h>
63 #include <openssl/rsa.h>
64 #include <openssl/rand.h>
67 * This is a dummy RSA implementation that just returns errors when called.
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.
74 static int RSA_null_public_encrypt(int flen, const unsigned char *from,
75 unsigned char *to, RSA *rsa, int padding);
76 static int RSA_null_private_encrypt(int flen, const unsigned char *from,
77 unsigned char *to, RSA *rsa, int padding);
78 static int RSA_null_public_decrypt(int flen, const unsigned char *from,
79 unsigned char *to, RSA *rsa, int padding);
80 static int RSA_null_private_decrypt(int flen, const unsigned char *from,
81 unsigned char *to, RSA *rsa, int padding);
82 #if 0 /* not currently used */
83 static int RSA_null_mod_exp(const BIGNUM *r0, const BIGNUM *i, RSA *rsa);
85 static int RSA_null_init(RSA *rsa);
86 static int RSA_null_finish(RSA *rsa);
87 static RSA_METHOD rsa_null_meth = {
89 RSA_null_public_encrypt,
90 RSA_null_public_decrypt,
91 RSA_null_private_encrypt,
92 RSA_null_private_decrypt,
104 const RSA_METHOD *RSA_null_method(void)
106 return (&rsa_null_meth);
109 static int RSA_null_public_encrypt(int flen, const unsigned char *from,
110 unsigned char *to, RSA *rsa, int padding)
112 RSAerr(RSA_F_RSA_NULL_PUBLIC_ENCRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
116 static int RSA_null_private_encrypt(int flen, const unsigned char *from,
117 unsigned char *to, RSA *rsa, int padding)
119 RSAerr(RSA_F_RSA_NULL_PRIVATE_ENCRYPT,
120 RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
124 static int RSA_null_private_decrypt(int flen, const unsigned char *from,
125 unsigned char *to, RSA *rsa, int padding)
127 RSAerr(RSA_F_RSA_NULL_PRIVATE_DECRYPT,
128 RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
132 static int RSA_null_public_decrypt(int flen, const unsigned char *from,
133 unsigned char *to, RSA *rsa, int padding)
135 RSAerr(RSA_F_RSA_NULL_PUBLIC_DECRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
139 #if 0 /* not currently used */
140 static int RSA_null_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa)
142 ... err(RSA_F_RSA_NULL_MOD_EXP, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
147 static int RSA_null_init(RSA *rsa)
152 static int RSA_null_finish(RSA *rsa)