+++ /dev/null
-/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
- *
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
- * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
- * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
- * specific language governing rights and limitations under the License.
- */
-
-
-/* crypto/bn/bn_blind.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 <stdio.h>
-#include "cryptlib.h"
-#include "bn_lcl.h"
-
-BN_BLINDING *BN_BLINDING_new(BIGNUM *A, BIGNUM *Ai, BIGNUM *mod)
- {
- BN_BLINDING *ret=NULL;
-
- bn_check_top(Ai);
- bn_check_top(mod);
-
- if ((ret=(BN_BLINDING *)Malloc(sizeof(BN_BLINDING))) == NULL)
- {
- BNerr(BN_F_BN_BLINDING_NEW,ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
- memset(ret,0,sizeof(BN_BLINDING));
- if ((ret->A=BN_new()) == NULL) goto err;
- if ((ret->Ai=BN_new()) == NULL) goto err;
- if (!BN_copy(ret->A,A)) goto err;
- if (!BN_copy(ret->Ai,Ai)) goto err;
- ret->mod=mod;
- return(ret);
-err:
- if (ret != NULL) BN_BLINDING_free(ret);
- return(NULL);
- }
-
-void BN_BLINDING_free(BN_BLINDING *r)
- {
- if(r == NULL)
- return;
-
- if (r->A != NULL) BN_free(r->A );
- if (r->Ai != NULL) BN_free(r->Ai);
- Free(r);
- }
-
-int BN_BLINDING_update(BN_BLINDING *b, BN_CTX *ctx)
- {
- int ret=0;
-
- if ((b->A == NULL) || (b->Ai == NULL))
- {
- BNerr(BN_F_BN_BLINDING_UPDATE,BN_R_NOT_INITIALIZED);
- goto err;
- }
-
- if (!BN_mod_mul(b->A,b->A,b->A,b->mod,ctx)) goto err;
- if (!BN_mod_mul(b->Ai,b->Ai,b->Ai,b->mod,ctx)) goto err;
-
- ret=1;
-err:
- return(ret);
- }
-
-int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx)
- {
- bn_check_top(n);
-
- if ((b->A == NULL) || (b->Ai == NULL))
- {
- BNerr(BN_F_BN_BLINDING_CONVERT,BN_R_NOT_INITIALIZED);
- return(0);
- }
- return(BN_mod_mul(n,n,b->A,b->mod,ctx));
- }
-
-int BN_BLINDING_invert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx)
- {
- int ret;
-
- bn_check_top(n);
- if ((b->A == NULL) || (b->Ai == NULL))
- {
- BNerr(BN_F_BN_BLINDING_INVERT,BN_R_NOT_INITIALIZED);
- return(0);
- }
- if ((ret=BN_mod_mul(n,n,b->Ai,b->mod,ctx)) >= 0)
- {
- if (!BN_BLINDING_update(b,ctx))
- return(0);
- }
- return(ret);
- }
-
projects / apple / security.git / blobdiff