io.nem.core.crypto

Class Cipher

java.lang.Object

io.nem.core.crypto.Cipher

All Implemented Interfaces:

BlockCipher

public class Cipher
extends java.lang.Object
implements BlockCipher

Wraps IES encryption and decryption logic.

Constructor Summary

Constructors

Constructor and Description
Cipher(BlockCipher cipher) Creates a cipher around a cipher.
Cipher(KeyPair senderKeyPair, KeyPair recipientKeyPair) Creates a cipher around a sender KeyPair and recipient KeyPair.
Cipher(KeyPair senderKeyPair, KeyPair recipientKeyPair, CryptoEngine engine) Creates a cipher around a sender KeyPair and recipient KeyPair.

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(byte[] input) Decrypts an arbitrarily-sized message.
byte[]	encrypt(byte[] input) Encrypts an arbitrarily-sized message.

Methods inherited from class java.lang.Object

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

Constructor Detail

Cipher

public Cipher(KeyPair senderKeyPair,
              KeyPair recipientKeyPair)

Creates a cipher around a sender KeyPair and recipient KeyPair.

Parameters:

senderKeyPair - The sender KeyPair. The sender's private key is required for encryption.

recipientKeyPair - The recipient KeyPair. The recipient's private key is required for decryption.

Cipher

public Cipher(KeyPair senderKeyPair,
              KeyPair recipientKeyPair,
              CryptoEngine engine)

Creates a cipher around a sender KeyPair and recipient KeyPair.

Parameters:

senderKeyPair - The sender KeyPair. The sender's private key is required for encryption.

recipientKeyPair - The recipient KeyPair. The recipient's private key is required for decryption.

engine - The crypto engine.

Cipher

public Cipher(BlockCipher cipher)

Creates a cipher around a cipher.

Parameters:

cipher - The cipher.

Method Detail

encrypt

public byte[] encrypt(byte[] input)

Description copied from interface: BlockCipher

Encrypts an arbitrarily-sized message.

Specified by:

encrypt in interface BlockCipher

Parameters:

input - The message to encrypt.

Returns:

The encrypted message.

decrypt

public byte[] decrypt(byte[] input)

Description copied from interface: BlockCipher

Decrypts an arbitrarily-sized message.

Specified by:

decrypt in interface BlockCipher

Parameters:

input - The message to decrypt.

Returns:

The decrypted message or null if decryption failed.