org.ssonet.mechanisms.confidentiality
Class RC4

java.lang.Object
  |
  +--org.ssonet.mechanisms.confidentiality.AbstractConfidentialityMechanism
        |
        +--org.ssonet.mechanisms.confidentiality.RC4

All Implemented Interfaces:

IOStream, Mechanism

public class RC4

extends AbstractConfidentialityMechanism

Algorithm RC4. This is a stream cipher, so it needs a special handling

Field Summary

static boolean

debug

Fields inherited from class org.ssonet.mechanisms.confidentiality.AbstractConfidentialityMechanism

cipherIn, cipherOut, EOF, inBuffer, INBUFFER_SIZE, ioStream, keyLengths, mechanismName, messageBuffer, modes, negotiatedMechConf, providers, readBlockNumber, readException, readMode, rounds, validBytesToRead, variants, writeBlockNumber

Fields inherited from interface org.ssonet.net.Mechanism

KEYLENGTH, MODES, PROVIDERLIST, ROUNDS, VARIANTS

Constructor Summary

RC4()

Method Summary

org.ssonet.mechanisms.MechanismConfiguration	getDefaultConfiguration() Return the basic default configuration for a cipher algorithm.
java.lang.String[]	getModes() no modes availlable, its a stream cipher by definition
void	init(org.ssonet.io.IOStream ioStream, int securityGoal, org.ssonet.mechanisms.MechanismConfiguration ownMechanismConfiguration) Initialize without key exchange
void	init(org.ssonet.io.IOStream ioStream, int securityGoal, org.ssonet.mechanisms.MechanismConfiguration ownMechanismConfiguration, org.ssonet.mechanisms.MechanismConfiguration partnerMechanismConfiguration, org.ssonet.net.KeyExchange keyExchange) Initialize with key exchange

Methods inherited from class org.ssonet.mechanisms.confidentiality.AbstractConfidentialityMechanism

available, closeIn, closeOut, getAlgorithmParameterSpec, getConfiguration, getKeyLengths, getName, getProviders, getRounds, getVariants, initIOStream, negotiateMechConf, read, testDecrypt, testEncrypt, write

Methods inherited from class java.lang.Object

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

Field Detail

debug

public static boolean debug

Constructor Detail

RC4

public RC4()

Method Detail

getModes

public java.lang.String[] getModes()

no modes availlable, its a stream cipher by definition

Specified by:

getModes in interface Mechanism

Overrides:

getModes in class AbstractConfidentialityMechanism

Returns:

valid operation modes of the mechanism.

init

public void init(org.ssonet.io.IOStream ioStream,
                 int securityGoal,
                 org.ssonet.mechanisms.MechanismConfiguration ownMechanismConfiguration)

Initialize without key exchange

Specified by:

init in interface Mechanism

Overrides:

init in class AbstractConfidentialityMechanism

Parameters:

ioStream - mechanism IOStream

securityGoal - the security goal, for which the algorithm is used

ownMechanismConfiguration - own mechanism configuration

init

public void init(org.ssonet.io.IOStream ioStream,
                 int securityGoal,
                 org.ssonet.mechanisms.MechanismConfiguration ownMechanismConfiguration,
                 org.ssonet.mechanisms.MechanismConfiguration partnerMechanismConfiguration,
                 org.ssonet.net.KeyExchange keyExchange)
          throws java.lang.Exception

Initialize with key exchange

Specified by:

init in interface Mechanism

Overrides:

init in class AbstractConfidentialityMechanism

Parameters:

ioStream - mechanism IOStream

securityGoal - the security goal, for which the algorithm is used

ownMechanismConfiguration - own mechanism configuration

partnerMechanismConfiguration - partner mechanism configuration

keyExchange - prepared key exchange protocol

Throws:

java.lang.Exception - if initialization fails

getDefaultConfiguration

public org.ssonet.mechanisms.MechanismConfiguration getDefaultConfiguration()

Description copied from class: AbstractConfidentialityMechanism

Return the basic default configuration for a cipher algorithm. An algorithm, which needs another default configuration, must override this method. The Configuration consists of Cipher Modes (ECB, OFB, ....) and the Provider

Specified by:

getDefaultConfiguration in interface Mechanism

Overrides:

getDefaultConfiguration in class AbstractConfidentialityMechanism

Returns:

a default configuration setting for the mechanism.