Package org.bouncycastle.crypto.kems

Class ECIESKEMGenerator

java.lang.Object

org.bouncycastle.crypto.kems.ECIESKEMGenerator

All Implemented Interfaces:

EncapsulatedSecretGenerator

public class ECIESKEMGenerator
extends Object
implements EncapsulatedSecretGenerator

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

Constructor Summary

Constructors

Constructor	Description
ECIESKEMGenerator(int keySize, DerivationFunction kdf, SecureRandom rnd)	Set up the ECIES-KEM.
ECIESKEMGenerator(int keyLen, DerivationFunction kdf, SecureRandom rnd, boolean cofactorMode, boolean oldCofactorMode, boolean singleHashMode)	Set up the ECIES-KEM.

Method Summary

Modifier and Type	Method	Description
SecretWithEncapsulation	generateEncapsulated(AsymmetricKeyParameter recipientKey)	Generate secret/encapsulation based on the recipient public key.

Methods inherited from class java.lang.Object

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

Constructor Details

ECIESKEMGenerator

public ECIESKEMGenerator(int keySize,
 DerivationFunction kdf,
 SecureRandom rnd)

Set up the ECIES-KEM.

Parameters:

keySize - size of the key to be generated (in bytes).

kdf - the key derivation function to be used.

rnd - the random source for the session key.

ECIESKEMGenerator

public ECIESKEMGenerator(int keyLen,
 DerivationFunction kdf,
 SecureRandom rnd,
 boolean cofactorMode,
 boolean oldCofactorMode,
 boolean singleHashMode)

Set up the ECIES-KEM.

Parameters:

keyLen - length in bytes of key to generate

kdf - the key derivation function to be used.

rnd - the random source for the session key.

cofactorMode - if true use the new cofactor ECDH.

oldCofactorMode - if true use the old cofactor ECDH.

singleHashMode - if true use single hash mode.

Method Details

generateEncapsulated

public SecretWithEncapsulation generateEncapsulated(AsymmetricKeyParameter recipientKey)

Description copied from interface: EncapsulatedSecretGenerator

Generate secret/encapsulation based on the recipient public key.

Specified by:

generateEncapsulated in interface EncapsulatedSecretGenerator

Returns:

An SecretWithEncapsulation derived from the recipient public key.