org.bouncycastle.crypto.kems
Class RSAKEMExtractor

java.lang.Object
  org.bouncycastle.crypto.kems.RSAKEMExtractor

All Implemented Interfaces:

EncapsulatedSecretExtractor

public class RSAKEMExtractor

extends java.lang.Object

implements EncapsulatedSecretExtractor

The RSA Key Encapsulation Mechanism (RSA-KEM) from ISO 18033-2.

Constructor Summary

RSAKEMExtractor(RSAKeyParameters privKey, int keyLen, DerivationFunction kdf)
Set up the RSA-KEM.

Method Summary

byte[]	extractSecret(byte[] encapsulation) Extract the secret based on the recipient private key.
int	getEncapsulationLength() Return the length in bytes of the encapsulation.

Methods inherited from class java.lang.Object

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

Constructor Detail

RSAKEMExtractor

public RSAKEMExtractor(RSAKeyParameters privKey,
                       int keyLen,
                       DerivationFunction kdf)

Set up the RSA-KEM.

Parameters:

privKey - the decryption key.

keyLen - length in bytes of key to generate.

kdf - the key derivation function to be used.

Method Detail

extractSecret

public byte[] extractSecret(byte[] encapsulation)

Description copied from interface: EncapsulatedSecretExtractor

Extract the secret based on the recipient private key.

Specified by:

extractSecret in interface EncapsulatedSecretExtractor

Parameters:

encapsulation - the encapsulated secret.

getEncapsulationLength

public int getEncapsulationLength()

Description copied from interface: EncapsulatedSecretExtractor

Return the length in bytes of the encapsulation.

Specified by:

getEncapsulationLength in interface EncapsulatedSecretExtractor

Returns:

length in bytes of an encapsulation for this parameter set.