net.timewalker.ffmq4.utils.md5

Class MD5

java.lang.Object

net.timewalker.ffmq4.utils.md5.MD5

public final class MD5
extends Object

Modifed version of Fast MD5 for Java 2.7.1 (from http://www.twmacinta.com/myjava/fast_md5.php) Modifications from the original source : - Removed native code support - Stripped some code - Removed wacky synchronization - Reformatted code to match Java and FFMQ standards

This Java class has been derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm and its reference implementation.

Author:

Santeri Paavolainen , Timothy W Macinta (twm@alum.mit.edu) (optimizations and bug fixes)

Constructor Summary

Constructors

Constructor and Description
MD5() Class constructor

Method Summary

Modifier and Type	Method and Description
byte[]	digest() Returns array of bytes (16 bytes) representing hash as of the current state of this object.
void	reset() Reset MD5 internal state
void	update(byte[] buffer) Updates hash with given array of bytes
void	update(byte[] buffer, int offset, int length) Updates hash with the bytebuffer given (using at maximum length bytes from that buffer)

Methods inherited from class java.lang.Object

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

Constructor Detail

MD5

public MD5()

Class constructor

Method Detail

reset

public void reset()

Reset MD5 internal state

update

public void update(byte[] buffer,
                   int offset,
                   int length)

Updates hash with the bytebuffer given (using at maximum length bytes from that buffer)

Parameters:

buffer - Array of bytes to be hashed

offset - Offset to buffer array

length - Use at maximum `length' bytes (absolute maximum is buffer.length)

update

public void update(byte[] buffer)

Updates hash with given array of bytes

Parameters:

buffer - Array of bytes to use for updating the hash

digest

public byte[] digest()

Returns array of bytes (16 bytes) representing hash as of the current state of this object. Note: getting a hash does not invalidate the hash object, it only creates a copy of the real state which is finalized.

Returns:

Array of 16 bytes, the hash of all updated bytes