rsa_null.c
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- /* rsa_null.c */
- /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999.
- */
- /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
- #include <stdio.h>
- #include "cryptlib.h"
- #include <openssl/bn.h>
- #include <openssl/rsa.h>
- #include <openssl/rand.h>
- /* This is a dummy RSA implementation that just returns errors when called.
- * It is designed to allow some RSA functions to work while stopping those
- * covered by the RSA patent. That is RSA, encryption, decryption, signing
- * and verify is not allowed but RSA key generation, key checking and other
- * operations (like storing RSA keys) are permitted.
- */
- static int RSA_null_public_encrypt(int flen, const unsigned char *from,
- unsigned char *to, RSA *rsa,int padding);
- static int RSA_null_private_encrypt(int flen, const unsigned char *from,
- unsigned char *to, RSA *rsa,int padding);
- static int RSA_null_public_decrypt(int flen, const unsigned char *from,
- unsigned char *to, RSA *rsa,int padding);
- static int RSA_null_private_decrypt(int flen, const unsigned char *from,
- unsigned char *to, RSA *rsa,int padding);
- #if 0 /* not currently used */
- static int RSA_null_mod_exp(const BIGNUM *r0, const BIGNUM *i, RSA *rsa);
- #endif
- static int RSA_null_init(RSA *rsa);
- static int RSA_null_finish(RSA *rsa);
- static RSA_METHOD rsa_null_meth={
- "Null RSA",
- RSA_null_public_encrypt,
- RSA_null_public_decrypt,
- RSA_null_private_encrypt,
- RSA_null_private_decrypt,
- NULL,
- NULL,
- RSA_null_init,
- RSA_null_finish,
- 0,
- NULL,
- NULL,
- NULL,
- NULL
- };
- const RSA_METHOD *RSA_null_method(void)
- {
- return(&rsa_null_meth);
- }
- static int RSA_null_public_encrypt(int flen, const unsigned char *from,
- unsigned char *to, RSA *rsa, int padding)
- {
- RSAerr(RSA_F_RSA_NULL_PUBLIC_ENCRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
- return -1;
- }
- static int RSA_null_private_encrypt(int flen, const unsigned char *from,
- unsigned char *to, RSA *rsa, int padding)
- {
- RSAerr(RSA_F_RSA_NULL_PRIVATE_ENCRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
- return -1;
- }
- static int RSA_null_private_decrypt(int flen, const unsigned char *from,
- unsigned char *to, RSA *rsa, int padding)
- {
- RSAerr(RSA_F_RSA_NULL_PRIVATE_DECRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
- return -1;
- }
- static int RSA_null_public_decrypt(int flen, const unsigned char *from,
- unsigned char *to, RSA *rsa, int padding)
- {
- RSAerr(RSA_F_RSA_NULL_PUBLIC_DECRYPT, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
- return -1;
- }
- #if 0 /* not currently used */
- static int RSA_null_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa)
- {
- ...err(RSA_F_RSA_NULL_MOD_EXP, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
- return -1;
- }
- #endif
- static int RSA_null_init(RSA *rsa)
- {
- return(1);
- }
- static int RSA_null_finish(RSA *rsa)
- {
- return(1);
- }