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SecureRandomSpi.java API Doc Java SE 5 API 1546 Fri Aug 26 14:57:16 BST 2005 java.security

SecureRandomSpi

java.lang.Object

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.

version: 1.11, 12/19/03
see: SecureRandom
since: 1.2

Fields Summary
private static final long
serialVersionUID
Constructors Summary
Methods Summary
protected abstract byte[] engineGenerateSeed(int numBytes)
Returns the given number of seed bytes. This call may be used to seed other random number generators.
param
numBytes the number of seed bytes to generate.
return
the seed bytes.
protected abstract void engineNextBytes(byte[] bytes)
Generates a user-specified number of random bytes.
param
bytes the array to be filled in with random bytes.
protected abstract void engineSetSeed(byte[] seed)
Reseeds this random object. The given seed supplements, rather than replaces, the existing seed. Thus, repeated calls are guaranteed never to reduce randomness.
param
seed the seed.