hcrypto.cipher
Class CipherEngine

java.lang.Object
  hcrypto.cipher.CipherEngine

Direct Known Subclasses:

BlockCipher

public abstract class CipherEngine
extends java.lang.Object

Defines the interface for the Cipher class. All of the methods in this class must be implemented by a provider who wishes to provide an implementation of a particular cipher algorithm.

The Cipher class encapsulates an instance of this class. To create a Cipher instance, an application would use the Cipher.getInstance(String algorithm) factory method, where algorithm provides the name of the cipher algorithm -- e.g., "Caesar", * "Playfair", and so on.

For example, here's sample code for instantiating and using a Caesar cipher:

      Cipher cipher = Cipher.getInstance("Caesar");
      HistoricalKey key = HistoricalKey.getInstance("Caesar", cipher.getProvider());
      key.init("55/printable");
      cipher.init(key);
      String c1encrypt = cipher.encrypt(secret);
 

The Cipher.getInstance() method searches the provider list for an implementation of Caesar cipher and will throw a "No such algorithm" exception if none is found. Details on creating an algorithm-dependent key for the cipher are described in the documentation of HistoricalKey class.

See also:

Cipher
HistoricalKey

Constructor Summary

CipherEngine()

Method Summary

java.lang.String

getAlphabetRangeOptions()

Methods inherited from class java.lang.Object

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

Constructor Detail

CipherEngine

public CipherEngine()

Method Detail

getAlphabetRangeOptions

public java.lang.String getAlphabetRangeOptions()