com.google.crypto.tink.prf

Class PrfSet

java.lang.Object

com.google.crypto.tink.prf.PrfSet

@Immutable
public abstract class PrfSet
extends Object

A Tink Keyset can be converted into a set of PRFs using this primitive. Every key in the keyset corresponds to a PRF in the PRFSet. Every PRF in the set is given an ID, which is the same ID as the key id in the Keyset.

Constructor Summary

Constructors

Constructor and Description
PrfSet()

Method Summary

Modifier and Type	Method and Description
byte[]	computePrimary(byte[] input, int outputLength) Convenience method to compute the primary PRF on a given input.
abstract Map<Integer,Prf>	getPrfs() A map of the PRFs represented by the keys in this keyset.
abstract int	getPrimaryId() Returns the primary ID of the keyset.

Methods inherited from class java.lang.Object

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

Constructor Detail

PrfSet

public PrfSet()

Method Detail

getPrimaryId

public abstract int getPrimaryId()

Returns the primary ID of the keyset.

getPrfs

public abstract Map<Integer,Prf> getPrfs()
                                  throws GeneralSecurityException

A map of the PRFs represented by the keys in this keyset. The map is guaranteed to contain getPrimaryId() as a key.

Throws:

GeneralSecurityException

computePrimary

public byte[] computePrimary(byte[] input,
                             int outputLength)
                      throws GeneralSecurityException

Convenience method to compute the primary PRF on a given input. See PRF.compute for details of the parameters.

Throws:

GeneralSecurityException