Package com.helixframework.crypto.diffiehellman

Class DiffieHellman

java.lang.Object

com.helixframework.crypto.diffiehellman.DiffieHellman

public final class DiffieHellman
extends Object

Utility methods for Diffie-Hellman key exchange.

Method Summary

Modifier and Type	Method	Description
static PublicKey	decode(byte[] encodedKey)	Decodes a byte array into a public key.
static byte[]	encode(PublicKey publicKey)	Encodes a public key into a byte array.
static KeyPair	generateKeyPair()	Generates a key pair for Diffie-Hellman key exchange.
static byte[]	generateSecret(PrivateKey privateKey, PublicKey publicKey)	Generates a shared secret key using Diffie-Hellman key exchange.

Methods inherited from class java.lang.Object

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

Method Details

generateKeyPair

public static KeyPair generateKeyPair()

Generates a key pair for Diffie-Hellman key exchange.

Returns:

the generated key pair

Throws:

RuntimeException - if an error occurs during key generation

generateSecret

public static byte[] generateSecret(PrivateKey privateKey,
 PublicKey publicKey)

Generates a shared secret key using Diffie-Hellman key exchange.

Parameters:

privateKey - the private key to be used for key generation (your private key)

publicKey - the public key to be used for key generation (their public key)

Returns:

the generated shared secret key as a byte array

Throws:

RuntimeException - if an error occurs during key generation

encode

public static byte[] encode(PublicKey publicKey)

Encodes a public key into a byte array.

Parameters:

publicKey - the public key to be encoded

Returns:

the encoded public key as a byte array

decode

public static PublicKey decode(byte[] encodedKey)

Decodes a byte array into a public key.

Parameters:

encodedKey - the encoded public key as a byte array

Returns:

the decoded public key

Throws:

RuntimeException - if an error occurs during decoding