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javax.crypto
Class NullCipher

java.lang.Object
  javax.crypto.Cipher
      javax.crypto.NullCipher

public class NullCipher
extends Cipher

The NullCipher class is a class that provides an "identity cipher" -- one that does not tranform the plaintext. As a consequence, the ciphertext is identical to the plaintext. All initialization methods do nothing, while the blocksize is set to 1 byte.

Since:

1.4

Field Summary

Modifier and Type	Field and Description

Fields inherited from class javax.crypto.Cipher

DECRYPT_MODE, ENCRYPT_MODE, PRIVATE_KEY, PUBLIC_KEY, SECRET_KEY, UNWRAP_MODE, WRAP_MODE

Constructor and Description

NullCipher()

Method Summary

Modifier and Type	Method and Description

Methods inherited from class javax.crypto.Cipher

doFinal, doFinal, doFinal, doFinal, doFinal, doFinal, doFinal, getAlgorithm, getBlockSize, getExemptionMechanism, getInstance, getInstance, getInstance, getIV, getMaxAllowedKeyLength, getMaxAllowedParameterSpec, getOutputSize, getParameters, getProvider, init, init, init, init, init, init, init, init, unwrap, update, update, update, update, update, wrap

Methods inherited from class java.lang.Object

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

Constructor Detail

NullCipher

public NullCipher()