cz.d1x.dxcrypto.hash.digest

Class DigestAlgorithm

java.lang.Object

cz.d1x.dxcrypto.hash.digest.DigestAlgorithm

All Implemented Interfaces:

HashingAlgorithm

public final class DigestAlgorithm
extends Object
implements HashingAlgorithm

Abstract class for hashing algorithm which uses MessageDigest for hashing.

This class is immutable and can be considered thread safe. It is not allowed to extend this class to ensure it stays that way.

Author:

Zdenek Obst, zdenek.obst-at-gmail.com

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DigestAlgorithm(String digestName, BytesRepresentation bytesRepresentation, String encoding) Creates a new instance with given encoding.

Method Summary

Modifier and Type	Method and Description
byte[]	hash(byte[] input) Creates a hash from input bytes.
String	hash(String input) Creates a hash from input text.

Methods inherited from class java.lang.Object

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

Constructor Detail

DigestAlgorithm

protected DigestAlgorithm(String digestName,
                          BytesRepresentation bytesRepresentation,
                          String encoding)

Creates a new instance with given encoding.

Parameters:

digestName - name of the digest

bytesRepresentation - representation of byte arrays in String

encoding - encoding used for strings

Method Detail

hash

public byte[] hash(byte[] input)
            throws HashingException

Description copied from interface: HashingAlgorithm

Creates a hash from input bytes.

Specified by:

hash in interface HashingAlgorithm

Parameters:

input - input to be hashed

Returns:

hashed text in input

Throws:

HashingException - possible exception during hashing process

hash

public String hash(String input)
            throws HashingException

Description copied from interface: HashingAlgorithm

Creates a hash from input text.

Specified by:

hash in interface HashingAlgorithm

Parameters:

input - input text to be hashed

Returns:

hashed text in hex string

Throws:

HashingException - possible exception during hashing process