org.apache.xml.security.encryption

Interface KeyDerivationMethod

All Known Implementing Classes:

KeyDerivationMethodImpl

public interface KeyDerivationMethod

The key derivation is to generate new cryptographic key material from existing key material such as the shared secret and any other (private or public) information. The implementations of this interface provides XML serializing/deserializing of the: KeyDerivationParameters for various key derivation algorithms. The Schema for KeyDerivationMethod is as follows:

Method Summary

Modifier and Type	Method and Description
String	getAlgorithm() Returns the algorithm URI of this KeyDerivationMethod.
KDFParams	getKDFParams() Returns the KDF parameters used by the key derivation algorithm.

Method Detail

getAlgorithm

String getAlgorithm()

Returns the algorithm URI of this KeyDerivationMethod.

Returns:

the algorithm URI string

getKDFParams

KDFParams getKDFParams()
                throws XMLSecurityException

Returns the KDF parameters used by the key derivation algorithm. Currently supported types are: ConcatKDFParams and HKDFParams.

Returns:

the KDFParams used by the key derivation algorithm

Throws:

XMLSecurityException - if the KDFParams cannot be created