Java Doc for PRand.java in  » Portal » Open-Portal » com » sun » portal » ksecurity » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » Open Portal » com.sun.portal.ksecurity   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.sun.portal.ksecurity.RandomData       com.sun.portal.ksecurity.PRand PRand final class PRand extends RandomData (Code) Implements a pseudo random number generator. Constructor Summary public   PRand()      Constructor for random data. Method Summary public  void generateData(byte[] b, short off, short len)      This does a reasonable job of producing unpredictable random data by using a one way hash as a mixing function and the current time in milliseconds as a source of entropy. public  void setSeed(byte[] b, short off, short len)      Set the random number seed. public  void updateSeed()      This does a reasonable job of producing unpredictable random data by using a one way hash as a mixing function and the current time in milliseconds as a source of entropy. Constructor Detail PRand public PRand() throws CryptoException(Code) Constructor for random data. Method Detail generateData public void generateData(byte[] b, short off, short len)(Code) This does a reasonable job of producing unpredictable random data by using a one way hash as a mixing function and the current time in milliseconds as a source of entropy. Parameters:   b - buffer of input data Parameters:   off - offset into the provided buffer Parameters:   len - length of the data to be processed setSeed public void setSeed(byte[] b, short off, short len)(Code) Set the random number seed. Parameters:   b - initial data to use as the seed Parameters:   off - offset into the provided buffer Parameters:   len - length of the data to be used updateSeed public void updateSeed()(Code) This does a reasonable job of producing unpredictable random data by using a one way hash as a mixing function and the current time in milliseconds as a source of entropy. Fields inherited from com.sun.portal.ksecurity.RandomData final public static byte ALG_PSEUDO_RANDOM(Code)(Java Doc) final public static byte ALG_SECURE_RANDOM(Code)(Java Doc) Methods inherited from com.sun.portal.ksecurity.RandomData abstract public void generateData(byte[] buf, short off, short len)(Code)(Java Doc) public static RandomData getInstance(byte alg) throws CryptoException(Code)(Java Doc) abstract public void setSeed(byte[] buf, short off, short len)(Code)(Java Doc) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)