Class KyberKeyAgreement

java.lang.Object

com.ibm.crypto.hdwrCCA.provider.KyberKeyAgreement

public class KyberKeyAgreement
extends Object

This class is a concrete implementation of the Service Provider Interface (SPI) for key agreement using the CRYSTALS-Kyber key agreement algorithm.

Constructor Summary

Constructors

Constructor	Description
KyberKeyAgreement()	Constructor for the Kyber key agreement functionality.

Method Summary

Modifier and Type	Method	Description
SecretKey	generateSecret(String algorithm)	- Creates the shared secret and returns it as a SecretKey object of the specified algorithm.
void	init(Key hybridKey, ECPrivateHWKey ecPrivKey, ECPublicKey ecPubKey, byte[] encryptedValue, byte[] iv)	Initializes the KyberKeyAgreement object.
void	init(Key hybridKey, ECPrivateHWKey ecPrivKey, ECPublicKey ecPubKey, byte[] encryptedValue, byte[] iv, AlgorithmParameterSpec params)	Initializes the KyberKeyAgreement object.

Methods inherited from class Object

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

Constructor Details

KyberKeyAgreement

public KyberKeyAgreement()

Constructor for the Kyber key agreement functionality.

Method Details

init

public void init(Key hybridKey,
 ECPrivateHWKey ecPrivKey,
 ECPublicKey ecPubKey,
 byte[] encryptedValue,
 byte[] iv,
 AlgorithmParameterSpec params)
          throws InvalidKeyException,
InvalidAlgorithmParameterException

Initializes the KyberKeyAgreement object.

Parameters:

hybridKey - A CCA AES CIPHER key or a Kyber private key

ecPrivKey - An ECPrivateKey created by Bob.

ecPubKey - An ECPublicKey created by Alice.

iv - The AES encryption initialization vector

params - The algorithm parameters for the key agreement operation

aesEncryptedValue - The encrypted AES value generated by a KyberDerivationInput.encrypt() call.

Throws:

InvalidKeyException

InvalidAlgorithmParameterException

init

public void init(Key hybridKey,
 ECPrivateHWKey ecPrivKey,
 ECPublicKey ecPubKey,
 byte[] encryptedValue,
 byte[] iv)
          throws InvalidKeyException

Initializes the KyberKeyAgreement object.

Parameters:

hybridKey - A CCA AES CIPHER key or a Kyber private key

ecPrivKey - An ECPrivateKey created by Bob.

ecPubKey - An ECPublicKey created by Alice.

iv - The AES encryption initialization vector

aesEncryptedValue - The encrypted AES value generated by a KyberDerivationInput.encrypt() call.

Throws:

InvalidKeyException

generateSecret

public SecretKey generateSecret(String algorithm)
                         throws NoSuchAlgorithmException,
InvalidKeyException

- Creates the shared secret and returns it as a SecretKey object of the specified algorithm.

Parameters:

algorithm -

keyBitLength -

Returns:

Throws:

NoSuchAlgorithmException

InvalidKeyException