anon.client.crypto

Class DataChannelCipher

java.lang.Object

anon.client.crypto.DataChannelCipher

All Implemented Interfaces:

IDataChannelChipher

public final class DataChannelCipher
extends java.lang.Object
implements IDataChannelChipher

Author:

Lukas Braune

Constructor Summary

Constructors

Constructor and Description
DataChannelCipher()

Method Summary

Modifier and Type	Method and Description
void	decryptGCM2(byte[] from, int ifrom, byte[] to, int ito, int len)
void	encryptGCM1(byte[] from, int ifrom, byte[] to, int ito, int len)
byte[]	getKeys() Returns the currently used key(s) for encryption/decryption.
static int	getMACSize()
int	setEncryptionKeysAES(byte[] keys) Set both keys to different values, if keys.length == 2 * KEY_SIZE, else set both keys to the same value.
int	setEncryptionKeysAES(byte[] keys, int offset, int keylen) Set both keys to different values, if keys.length == 2 * KEY_SIZE, else set both keys to the same value.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataChannelCipher

public DataChannelCipher()

Method Detail

setEncryptionKeysAES

public int setEncryptionKeysAES(byte[] keys)

Description copied from interface: IDataChannelChipher

Set both keys to different values, if keys.length == 2 * KEY_SIZE, else set both keys to the same value.

Specified by:

setEncryptionKeysAES in interface IDataChannelChipher

Parameters:

keys - Array which contains key(s) (send and receive key)

Returns:

int

setEncryptionKeysAES

public int setEncryptionKeysAES(byte[] keys,
                                int offset,
                                int keylen)

Description copied from interface: IDataChannelChipher

Set both keys to different values, if keys.length == 2 * KEY_SIZE, else set both keys to the same value.

Specified by:

setEncryptionKeysAES in interface IDataChannelChipher

Parameters:

keys - Array which contains key(s) (send and receive key)

Returns:

int

getKeys

public byte[] getKeys()

Description copied from interface: IDataChannelChipher

Returns the currently used key(s) for encryption/decryption. If both keys are set, then an array of 32 byte is returned, otherwise an array of 16 bytes is returned.

Specified by:

getKeys in interface IDataChannelChipher

Returns:

The current key(s) used for encryption/decryption or null, if no key is set.

encryptGCM1

public void encryptGCM1(byte[] from,
                        int ifrom,
                        byte[] to,
                        int ito,
                        int len)
                 throws java.lang.Exception

Specified by:

encryptGCM1 in interface IDataChannelChipher

Throws:

java.lang.Exception

decryptGCM2

public void decryptGCM2(byte[] from,
                        int ifrom,
                        byte[] to,
                        int ito,
                        int len)
                 throws java.lang.Exception

Specified by:

decryptGCM2 in interface IDataChannelChipher

Throws:

java.lang.Exception

getMACSize

public static int getMACSize()