org.bouncycastle.crypto.util
Class BasicAlphabetMapper

java.lang.Object
  org.bouncycastle.crypto.util.BasicAlphabetMapper

All Implemented Interfaces:

AlphabetMapper

public class BasicAlphabetMapper

extends java.lang.Object

implements AlphabetMapper

A basic alphabet mapper that just creates a mapper based on the passed in array of characters.

Constructor Summary

BasicAlphabetMapper(char[] alphabet)
Base constructor.

BasicAlphabetMapper(java.lang.String alphabet)
Base constructor.

Method Summary

char[]	convertToChars(byte[] input) Return a char[] for this alphabet based on the indexes passed.
byte[]	convertToIndexes(char[] input) Return the passed in char[] as a byte array of indexes (indexes can be more than 1 byte)
int	getRadix() Return the number of characters in the alphabet.

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicAlphabetMapper

public BasicAlphabetMapper(java.lang.String alphabet)

Base constructor.

Parameters:

alphabet - a String of characters making up the alphabet.

BasicAlphabetMapper

public BasicAlphabetMapper(char[] alphabet)

Base constructor.

Parameters:

alphabet - an array of characters making up the alphabet.

Method Detail

getRadix

public int getRadix()

Description copied from interface: AlphabetMapper

Return the number of characters in the alphabet.

Specified by:

getRadix in interface AlphabetMapper

Returns:

the radix for the alphabet.

convertToIndexes

public byte[] convertToIndexes(char[] input)

Description copied from interface: AlphabetMapper

Return the passed in char[] as a byte array of indexes (indexes can be more than 1 byte)

Specified by:

convertToIndexes in interface AlphabetMapper

Parameters:

input - characters to be mapped.

Returns:

an index array.

convertToChars

public char[] convertToChars(byte[] input)

Description copied from interface: AlphabetMapper

Return a char[] for this alphabet based on the indexes passed.

Specified by:

convertToChars in interface AlphabetMapper

Parameters:

input - input array of indexes.

Returns:

an array of char corresponding to the index values.