基于cryptoapi的生物醫(yī)學真隨機數(shù)的生成器

1、1基于CryptoAPI的生物醫(yī)學真隨機數(shù)的生成器【關鍵詞】隨機數(shù)生成器【Abstract】AIM:ToestablishatrueromnumbergeneratbasedonMicrosoftCryptoAPI.METHODS:TheromnumberswereobtainedbyprogrammingunderMicrosoftVisualC6.0viaCryptGenRomfunctionfollowingtheinstalla

2、tionofIntelSecurityDriver(ISD)onanIntel815Echipsetbasedpersonalcomputer.RESULTS:Theauthtestedthegeneratwith500romnumbersinNISTFIPS1401χ2RSquaredtesttheresultshowedthatitfittedtheneedofindependentunifmdistribution.Theauth

3、alsocomparedtheromnumbersproducedbyIntelRNGbasedtrueromnumbergeneratthosefromtheromnumbertablewithstatisticsparametersbyusingthesameamountof7500romnumbersinthesamevaluedomain.TheresultshowedthatSDSECVofIntelRNGbasedromnu

4、mbergeneratweresmallerthanthoseofromnumbertable.TheresultofutestoftwoCVsindicatedthattherewasnodifferencebetweenthetwomethods.CONCLUSION:IntelCryptoAPIbasedromnumbergeneratcanproducehighqualityromnumberswithindependentun

5、ifmdistributionfeatures.3“CryptographicServiceProvider”（CSP）.微軟公司在發(fā)布CryptoAPI的時候就已經(jīng)內置了若干種CSP，即MicrosoftBaseCryptographicProvider（MBCP）.CryptGenRom函數(shù)就位于MBCP中的MicrosoftRSABaseProvider中.對于能提供RNG的芯片組，在安裝相應驅動，例如IntelRNG的Intel

6、SecurityDriver（ISD）［2］和VIA的VIARomNumberGenerat（VRNG）［3］等之后，就能生成相應的CSP，供CryptoAPI體系調用.因此使用CryptGenRom函數(shù)所獲得的隨機數(shù)是真隨機數(shù).1材料和方法［4］1.1材料在兼容機（intelPIII667主板：ASUSTUSL2C，815E芯片組，512MKingMaxPC133RAM）上使用MicrosoftVisualC.2003編制了計算機程序

7、.1.2方法使用CryptGenRom()函數(shù)獲取隨機數(shù)(Fig1).使用的偽代碼如下：#defineWIN32_WINNT0x400#include#include#includeiscp4ms.h.HCRYPTPROVhProvDWDromNumber=0DWDromLength=4獲取句柄.If(!CryptAcquireContext(hProvNULLINTEL_DEF_PROVPROV_INTEL_SEC0))printf(