javax.crypto: public class: NullCipher

javax.crypto
public class: NullCipher [javadoc | source]

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

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.

author: Li - Gong

since: 1.4 -

Fields inherited from javax.crypto.Cipher:
ENCRYPT_MODE, DECRYPT_MODE, WRAP_MODE, UNWRAP_MODE, PUBLIC_KEY, PRIVATE_KEY, SECRET_KEY

Constructor:
public NullCipher() { super(new NullCipherSpi(), null); }

Methods from javax.crypto.Cipher:
chooseFirstProvider, doFinal, doFinal, doFinal, doFinal, doFinal, doFinal, doFinal, getAlgorithm, getBlockSize, getExemptionMechanism, getIV, getInstance, getInstance, getInstance, getMaxAllowedKeyLength, getMaxAllowedParameterSpec, getOutputSize, getParameters, getProvider, init, init, init, init, init, init, init, init, unwrap, update, update, update, update, update, updateAAD, updateAAD, updateAAD, wrap

Methods from javax.crypto.Cipher:

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

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait