/* This file has been explicitly broken by ryker for OpenBSD, July * 1, 1998. In spite of the title, there is no implementation of the * RSA algorithm left in this file. All these routines will return an * error and fail when called. They exist as stubs and can be * ressurected from the bit bucket by someone in the free world once * the RSA algorithm is no longer subject to patent problems. Eric * Young's original copyright is below. */ /* crypto/rsa/rsa_eay.c */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * 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 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 acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS 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 AUTHOR OR 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. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include #include "cryptlib.h" #include #include #include static int RSA_eay_public_encrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa,int padding); static int RSA_eay_private_encrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa,int padding); static int RSA_eay_public_decrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa,int padding); static int RSA_eay_private_decrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa,int padding); static int RSA_eay_mod_exp(BIGNUM *r0, BIGNUM *i, RSA *rsa); static int RSA_eay_init(RSA *rsa); static int RSA_eay_finish(RSA *rsa); static RSA_METHOD rsa_pkcs1_eay_meth={ "Eric Young's PKCS#1 RSA", RSA_eay_public_encrypt, RSA_eay_public_decrypt, RSA_eay_private_encrypt, RSA_eay_private_decrypt, RSA_eay_mod_exp, BN_mod_exp_mont, RSA_eay_init, RSA_eay_finish, 0, NULL, }; RSA_METHOD *RSA_PKCS1_SSLeay(void) { return(&rsa_pkcs1_eay_meth); } static int RSA_eay_public_encrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa, int padding) { BIGNUM f,ret; int i,j,k,num=0,r= -1; unsigned char *buf=NULL; BN_CTX *ctx=NULL; BN_init(&f); BN_init(&ret); if ((ctx=BN_CTX_new()) == NULL) goto err; num=BN_num_bytes(rsa->n); if ((buf=(unsigned char *)Malloc(num)) == NULL) { RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,ERR_R_MALLOC_FAILURE); goto err; } switch (padding) { case RSA_PKCS1_PADDING: i=RSA_padding_add_PKCS1_type_2(buf,num,from,flen); break; #ifndef NO_SHA case RSA_PKCS1_OAEP_PADDING: i=RSA_padding_add_PKCS1_OAEP(buf,num,from,flen,NULL,0); break; #endif case RSA_SSLV23_PADDING: i=RSA_padding_add_SSLv23(buf,num,from,flen); break; case RSA_NO_PADDING: i=RSA_padding_add_none(buf,num,from,flen); break; default: RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,RSA_R_UNKNOWN_PADDING_TYPE); goto err; } if (i <= 0) goto err; if (BN_bin2bn(buf,num,&f) == NULL) goto err; if ((rsa->_method_mod_n == NULL) && (rsa->flags & RSA_FLAG_CACHE_PUBLIC)) { if ((rsa->_method_mod_n=BN_MONT_CTX_new()) != NULL) if (!BN_MONT_CTX_set(rsa->_method_mod_n,rsa->n,ctx)) goto err; } if (!rsa->meth->bn_mod_exp(&ret,&f,rsa->e,rsa->n,ctx, rsa->_method_mod_n)) goto err; /* put in leading 0 bytes if the number is less than the * length of the modulus */ j=BN_num_bytes(&ret); i=BN_bn2bin(&ret,&(to[num-j])); for (k=0; k<(num-i); k++) to[k]=0; r=num; err: if (ctx != NULL) BN_CTX_free(ctx); BN_clear_free(&f); BN_clear_free(&ret); if (buf != NULL) { memset(buf,0,num); Free(buf); } return(r); } static int RSA_eay_private_encrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa, int padding) { BIGNUM f,ret; int i,j,k,num=0,r= -1; unsigned char *buf=NULL; BN_CTX *ctx=NULL; /* Body of this routine removed for OpenBSD - will return * when the RSA patent expires */ err: if (ctx != NULL) BN_CTX_free(ctx); BN_clear_free(&ret); BN_clear_free(&f); if (buf != NULL) { memset(buf,0,num); Free(buf); } return(r); } static int RSA_eay_private_decrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa, int padding) { BIGNUM f,ret; int j,num=0,r= -1; unsigned char *p; unsigned char *buf=NULL; BN_CTX *ctx=NULL; /* Body of this routine removed for OpenBSD - will return * when the RSA patent expires */ err: if (ctx != NULL) BN_CTX_free(ctx); BN_clear_free(&f); BN_clear_free(&ret); if (buf != NULL) { memset(buf,0,num); Free(buf); } return(r); } static int RSA_eay_public_decrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa, int padding) { BIGNUM f,ret; int i,num=0,r= -1; unsigned char *p; unsigned char *buf=NULL; BN_CTX *ctx=NULL; /* Body of this routine removed for OpenBSD - will return * when the RSA patent expires */ err: if (ctx != NULL) BN_CTX_free(ctx); BN_clear_free(&f); BN_clear_free(&ret); if (buf != NULL) { memset(buf,0,num); Free(buf); } return(r); } static int RSA_eay_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa) { BIGNUM r1,m1; int ret=0; BN_CTX *ctx; if ((ctx=BN_CTX_new()) == NULL) goto err; BN_init(&m1); BN_init(&r1); /* Body of this routine removed for OpenBSD - will return * when the RSA patent expires */ err: BN_clear_free(&m1); BN_clear_free(&r1); BN_CTX_free(ctx); return(ret); } static int RSA_eay_init(RSA *rsa) { rsa->flags|=RSA_FLAG_CACHE_PUBLIC|RSA_FLAG_CACHE_PRIVATE; return(1); } static int RSA_eay_finish(RSA *rsa) { if (rsa->_method_mod_n != NULL) BN_MONT_CTX_free(rsa->_method_mod_n); if (rsa->_method_mod_p != NULL) BN_MONT_CTX_free(rsa->_method_mod_p); if (rsa->_method_mod_q != NULL) BN_MONT_CTX_free(rsa->_method_mod_q); return(1); }