82 lines
3.3 KiB
C
82 lines
3.3 KiB
C
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/***************************************************************************
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*
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Copyright 2013 CertiVox UK Ltd. *
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*
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This file is part of CertiVox MIRACL Crypto SDK. *
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*
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The CertiVox MIRACL Crypto SDK provides developers with an *
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extensive and efficient set of cryptographic functions. *
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For further information about its features and functionalities please *
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refer to http://www.certivox.com *
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*
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* The CertiVox MIRACL Crypto SDK is free software: you can *
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redistribute it and/or modify it under the terms of the *
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GNU Affero General Public License as published by the *
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Free Software Foundation, either version 3 of the License, *
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or (at your option) any later version. *
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*
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* The CertiVox MIRACL Crypto SDK is distributed in the hope *
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that it will be useful, but WITHOUT ANY WARRANTY; without even the *
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
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See the GNU Affero General Public License for more details. *
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*
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* You should have received a copy of the GNU Affero General Public *
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License along with CertiVox MIRACL Crypto SDK. *
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If not, see <http://www.gnu.org/licenses/>. *
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*
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You can be released from the requirements of the license by purchasing *
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a commercial license. Buying such a license is mandatory as soon as you *
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develop commercial activities involving the CertiVox MIRACL Crypto SDK *
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without disclosing the source code of your own applications, or shipping *
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the CertiVox MIRACL Crypto SDK with a closed source product. *
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*
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***************************************************************************/
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/*
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* MIRACL flash random number routine
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* mrfrnd.c
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*/
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#include "miracl.h"
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#ifdef MR_FP
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#include <math.h>
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#endif
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#ifdef MR_FLASH
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#ifndef MR_NO_RAND
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void frand(_MIPD_ flash x)
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{ /* generates random flash number 0<x<1 */
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int i;
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#ifdef MR_FP
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mr_small dres;
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#endif
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#ifdef MR_OS_THREADS
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miracl *mr_mip=get_mip();
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#endif
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if (mr_mip->ERNUM) return;
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MR_IN(46)
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zero(mr_mip->w6);
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mr_mip->w6->len=mr_mip->nib;
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for (i=0;i<mr_mip->nib;i++)
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{ /* generate a full width random number */
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if (mr_mip->base==0) mr_mip->w6->w[i]=brand(_MIPPO_ );
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else mr_mip->w6->w[i]=MR_REMAIN(brand(_MIPPO_ ),mr_mip->base);
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}
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mr_mip->check=OFF;
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bigrand(_MIPP_ mr_mip->w6,mr_mip->w5);
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mr_mip->check=ON;
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mround(_MIPP_ mr_mip->w5,mr_mip->w6,x);
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MR_OUT
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}
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#endif
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#endif
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