This snippet generates a secure hash string using VB.NET

Write a set of bytes into a 'so-called' binary file. The point is that we use BinaryWriter here and we have a byte array as input.

Here's a nifty trick I often use for testing.

Lets say you have a c:\foo\lib directory full of jarfiles for log4j, javamail...whatever.

Modern J2EE containers do a nice job of letting you deploy a jarfile with your code and have a lib directory full of jarfiles like this, but what if you just want to run a quick client from the command line?

Here's what you do:

Method for get n random number's

A simple tool used for fast Exponentiation. Very useful if you are creating your own cryptograpgic methods.

Convert
java.awt.Canvas to java.awt.image.BufferedImage or java.awt.image.Image

Gives factorials for a given value.

This is a quick and easy class that will generate MD5 hashes from strings. I originally wrote it to insert into my Oracle database so I could generate MD5 hases for passwords from PL/SQL.

Example

String md5Hash = stringMD5("my password");

Code snippet that prints MAC addresses for Ethernet type devices.

Date Parse