SecureRandomSpi (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.1

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java.security
Class SecureRandomSpi

java.lang.Object
  |
  +--java.security.SecureRandomSpi

All Implemented Interfaces:: Serializable

public abstract class SecureRandomSpi
extends Object
implements Serializable

This class defines the Service Provider Interface (SPI) for the SecureRandom class. All the abstract methods in this class must be implemented by each service provider who wishes to supply the implementation of a cryptographically strong pseudo-random number generator.

Since:: 1.2
See Also:: SecureRandom, Serialized Form

Constructor Summary

SecureRandomSpi()


Method Summary

protected abstract byte[] engineGenerateSeed(int numBytes)
          Returns the given number of seed bytes.

protected abstract void engineNextBytes(byte[] bytes)
          Generates a user-specified number of random bytes.

protected abstract void engineSetSeed(byte[] seed)
          Reseeds this random object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail