SecureRandomSpipublic abstract class SecureRandomSpi extends Object implements SerializableThis 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. |
| Fields Summary |
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| private static final long | serialVersionUID |
| Methods Summary |
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| protected abstract byte[] | engineGenerateSeed(int numBytes)Returns the given number of seed bytes. This call may be used to
seed other random number generators.
| | protected abstract void | engineNextBytes(byte[] bytes)Generates a user-specified number of random bytes.
If a call to engineSetSeed had not occurred previously,
the first call to this method forces this SecureRandom implementation
to seed itself. This self-seeding will not occur if
engineSetSeed was previously called.
| | 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.
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