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 Description

KeyDerivationKey()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	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