com.google.crypto.tink.keyderivation

Class KeyDerivationKey

java.lang.Object

com.google.crypto.tink.Key

com.google.crypto.tink.keyderivation.KeyDerivationKey

Direct Known Subclasses:

PrfBasedKeyDerivationKey

public abstract class KeyDerivationKey
extends Key

Represents a function to derive a key.

Tink Key Derivation is given by the primitive which maps a byte[] salt to a Keyset. For each key, a KeyDerivationKey maps a byte[] salt to a new "derived" Key. For a Keyset containing multiple derivation keys, the derived keyset is obtained by mapping each key according to this map (for the same byte[] salt), and inserting them into a new keyset.

Constructor Summary

Constructors

Constructor and Description
KeyDerivationKey()

Method Summary

Modifier and Type	Method and Description
abstract KeyDerivationParameters	getParameters() Returns a Parameters object containing all the information about the key which is not randomly chosen.

Methods inherited from class com.google.crypto.tink.Key

equalsKey, getIdRequirementOrNull

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyDerivationKey

public KeyDerivationKey()

Method Detail

getParameters

public abstract KeyDerivationParameters getParameters()

Description copied from class: Key

Returns a Parameters object containing all the information about the key which is not randomly chosen.

Implementations need to ensure that getParameters().hasIdRequirement() returns true if and only if getIdRequirementOrNull is non-null.

Specified by:

getParameters in class Key