hcrypto.engines
Class VigenereKey

java.lang.Object
  |
  +--hcrypto.cipher.HistoricalKey
        |
        +--hcrypto.engines.VigenereKey

public class VigenereKey

extends HistoricalKey

This class represents a key for a Vigenere cipher. The key is entirely represented by a keyword String composed of characters from the chosen alphabet.

For this implementation of Vigenere cipher any of the alphabet ranges can be used.

See also:

ViegenerEngine
Alphabet

Field Summary

static java.lang.String	DEFAULT_KEY_DESCRIPTOR_PROMPT_STRING A keyword description.
static java.lang.String	DEFAULT_KEYWORD_STRING A default keyword.

Fields inherited from class hcrypto.cipher.HistoricalKey

alphabet, blocksize, ciphAlphabet, cipherAlphabet, keyDescriptorPrompt, keyspec, keyword, plainAlphabet

Constructor Summary

VigenereKey()

Method Summary

java.lang.String	getAlgorithm() Returns the name of the algorithm "Vigenere".
void	init(java.lang.String keyspec) Initializes the VigenereKey with the specified keyspec.

Methods inherited from class hcrypto.cipher.HistoricalKey

getAlphabet, getBlocksize, getCiphAlphabet, getCTAlphabet, getInstance, getKeyDescriptorPrompt, getKeyword, getPlainAlphabet, initAlphabets, initKey, printAlphabets, removeDuplicateChars

Methods inherited from class java.lang.Object

clone, equals, finalize, 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

A keyword description.

DEFAULT_KEYWORD_STRING

public static final java.lang.String DEFAULT_KEYWORD_STRING

A default keyword.

Constructor Detail

VigenereKey

public VigenereKey()

Method Detail

init

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

Initializes the VigenereKey with the specified keyspec.

Overrides:

init in class HistoricalKey

Parameters:

keySpec - takes the form "keyword/alphabet", i.e. "76TrombonesLEDTHEBIGPARADE/azAZ09" for example, which would be mapped into the instance variables keyword as a String with the value of "76TrombonesLEDTHEBIGPARADE", and alphabet as a String with the value "azAZ09".

getAlgorithm

public java.lang.String getAlgorithm()

Returns the name of the algorithm "Vigenere".

Overrides:

getAlgorithm in class HistoricalKey