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