com.goterl.lazysodium.interfaces

Interface KeyExchange.Native

All Known Implementing Classes:

LazySodium, LazySodiumJava

Enclosing interface:

KeyExchange

public static interface KeyExchange.Native

Method Summary

Modifier and Type	Method and Description
boolean	cryptoKxClientSessionKeys(byte[] rx, byte[] tx, byte[] clientPk, byte[] clientSk, byte[] serverPk) This function computes a pair of shared keys (rx and tx) using the client's public key clientPk, the client's secret key clientSk and the server's public key serverPk.
boolean	cryptoKxKeypair(byte[] publicKey, byte[] secretKey) Generate a public and a secret key.
boolean	cryptoKxSeedKeypair(byte[] publicKey, byte[] secretKey, byte[] seed) Deterministically generate a public and secret key.
boolean	cryptoKxServerSessionKeys(byte[] rx, byte[] tx, byte[] serverPk, byte[] serverSk, byte[] clientPk) This function computes a pair of shared keys (rx and tx) using the client's public key clientPk, the server's secret key serverSk and the server's public key serverPk.

Method Detail

cryptoKxKeypair

boolean cryptoKxKeypair(byte[] publicKey,
                        byte[] secretKey)

Generate a public and a secret key.

Parameters:

publicKey - Public key will be populated here of size KeyExchange.PUBLICKEYBYTES.

secretKey - Secret key will be populated here of size KeyExchange.SECRETKEYBYTES.

Returns:

True if generated successfully.

cryptoKxSeedKeypair

boolean cryptoKxSeedKeypair(byte[] publicKey,
                            byte[] secretKey,
                            byte[] seed)

Deterministically generate a public and secret key. Store the seed somewhere if you want to generate these keys again.

Parameters:

publicKey - Public key will be populated here of size KeyExchange.PUBLICKEYBYTES.

secretKey - Secret key will be populated here of size KeyExchange.SECRETKEYBYTES.

seed - A random seed of size KeyExchange.SEEDBYTES.

Returns:

True if generated successfully.

cryptoKxClientSessionKeys

boolean cryptoKxClientSessionKeys(byte[] rx,
                                  byte[] tx,
                                  byte[] clientPk,
                                  byte[] clientSk,
                                  byte[] serverPk)

This function computes a pair of shared keys (rx and tx) using the client's public key clientPk, the client's secret key clientSk and the server's public key serverPk.

Parameters:

rx - Shared key 1 of size KeyExchange.SESSIONKEYBYTES. This should be used as an encryption key to SEND data to the server.

tx - Shared key 2 of size KeyExchange.SESSIONKEYBYTES. This should be used as an encryption key to SEND data to the client FROM the server.

clientPk - Client public key of size KeyExchange.PUBLICKEYBYTES.

clientSk - Client secret key of size KeyExchange.SECRETKEYBYTES.

serverPk - Server public key of size KeyExchange.PUBLICKEYBYTES.

Returns:

True if successful or false if the server public key is wrong.

cryptoKxServerSessionKeys

boolean cryptoKxServerSessionKeys(byte[] rx,
                                  byte[] tx,
                                  byte[] serverPk,
                                  byte[] serverSk,
                                  byte[] clientPk)

This function computes a pair of shared keys (rx and tx) using the client's public key clientPk, the server's secret key serverSk and the server's public key serverPk.

Parameters:

rx - Shared key 1 of size KeyExchange.SESSIONKEYBYTES. This should be used as an encryption key to SEND data to the client.

tx - Shared key 2 of size KeyExchange.SESSIONKEYBYTES. This should be used as an encryption key to SEND data to the client FROM the client.

serverPk - Server public key of size KeyExchange.PUBLICKEYBYTES.

serverSk - Server secret key of size KeyExchange.SECRETKEYBYTES.

clientPk - Client public key of size KeyExchange.PUBLICKEYBYTES.

Returns:

True if successful or false if the client public key is wrong.