Package org.jeegen.jee6.util

Class AbstractMessageDigest

java.lang.Object

org.jeegen.jee6.util.AbstractMessageDigest

Direct Known Subclasses:

MD5, SHA1, SHA256, SHA384, SHA512

public abstract class AbstractMessageDigest
extends Object

This abstract class provides message digests. The following hash methods are supported:

• MD5
• SHA1
• SHA256

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	AbstractMessageDigest.DIGEST	This enumeration lists the supported message digests.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractMessageDigest(AbstractMessageDigest.DIGEST digest)	This constructor initializes this class with the given hash algorithm.

Method Summary

Modifier and Type	Method	Description
String	encode(byte[] buffer)	This method computes the hash of a byte array.
String	encode(String input)	This method computes the hash of a text.
String	encode(String input, Charset charset)	This method computes the SHA1 hash of a text.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractMessageDigest

protected AbstractMessageDigest(AbstractMessageDigest.DIGEST digest)

This constructor initializes this class with the given hash algorithm.

Parameters:

digest - The hash to use.

Method Detail

encode

public String encode(String input)
              throws UnsupportedEncodingException

This method computes the hash of a text.

Parameters:

input - The text to hash.

Returns:

The hash.

Throws:

UnsupportedEncodingException - when the used encoding is unsupported.

encode

public String encode(String input,
                     Charset charset)
              throws UnsupportedEncodingException

This method computes the SHA1 hash of a text.

Parameters:

input - The text to hash.

charset - The encoding charset to use.

Returns:

The hash.

Throws:

UnsupportedEncodingException - when the used encoding is unsupported.

encode

public String encode(byte[] buffer)

This method computes the hash of a byte array.

Parameters:

buffer - The byte array to hash.

Returns:

The hash.