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NullCipher (Java 2 Platform SE v1.4.0) - JDK 5 Documentation v1.4.0, Java 2 SDK 英文文档

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javax.crypto
Class NullCipher

java.lang.Object
  |
  +--javax.crypto.Cipher
        |
        +--javax.crypto.NullCipher

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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

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Field Summary

 

Fields inherited from class javax.crypto.Cipher

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

 

Constructor Summary

NullCipher()

 

Methods inherited from class javax.crypto.Cipher

doFinal, doFinal, doFinal, doFinal, doFinal, doFinal, getAlgorithm, getBlockSize, getExemptionMechanism, getInstance, getInstance, getInstance, getIV, getOutputSize, getParameters, getProvider, init, init, init, init, init, init, init, init, unwrap, 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()

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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