hcrypto.engines
Class NullKey

java.lang.Object
  hcrypto.cipher.HistoricalKey
      hcrypto.engines.NullKey

public class NullKey
extends HistoricalKey

Represents a null key--i.e., a key for a trivial cipher that makes no transformation to the plaintext. The key can simply be the empty string.

Field Summary

static java.lang.String

DEFAULT_KEY_DESCRIPTOR_PROMPT_STRING

Constructor Summary

NullKey()

Method Summary

java.lang.String	getAlgorithm() This abstract method should be implemented in the algorithm-specific subclass.
void	init(java.lang.String keyspec) This abstract method should be implemented in the algorithm-specific subclass.
void	init(java.lang.String keyword, Alphabet alpha1, Alphabet alpha2) ADDED: 4/5/03 by RAM This should be implemented in the subclass.

Methods inherited from class hcrypto.cipher.HistoricalKey

getAlphabet, getBlocksize, getCipherKey, getCTAlphabet, getInstance, getKeyDescriptorPrompt, getKeyword, getPlainKey, initKey, initKey, invertKey, printAlphabets, removeDuplicateChars

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_KEY_DESCRIPTOR_PROMPT_STRING

public static final java.lang.String DEFAULT_KEY_DESCRIPTOR_PROMPT_STRING

See Also:

Constant Field Values

Constructor Detail

NullKey

public NullKey()

Method Detail

getAlgorithm

public java.lang.String getAlgorithm()

Description copied from class: HistoricalKey

This abstract method should be implemented in the algorithm-specific subclass.

Specified by:

getAlgorithm in class HistoricalKey

init

public void init(java.lang.String keyword,
                 Alphabet alpha1,
                 Alphabet alpha2)
          throws java.lang.Exception

Description copied from class: HistoricalKey

ADDED: 4/5/03 by RAM This should be implemented in the subclass.

Specified by:

init in class HistoricalKey

Throws:

java.lang.Exception

init

public void init(java.lang.String keyspec)
          throws java.lang.Exception

Description copied from class: HistoricalKey

This abstract method should be implemented in the algorithm-specific subclass.

Specified by:

init in class HistoricalKey

Throws:

java.lang.Exception