Firstly I only done this becuase I was bored, os it's never going to be any where near professional standards.
Without giveing to much away, it first takes the encryption key and using 2 random variables, which will change at random points, it changes all the alphabetic, numeric and the space character in the text. Although you might be able to see somthing like a double letter in the encrypted version when there was also one in the decrypted version - i.e. hello -> vlnkrru - and this may seem like it's unsecure, the longer the block of text entered the harder it will be to see things like this.
But I would also not recommend sending sensitive information (eg PIN numbers) using this.
This was just made for fun and I thought I would share it.
# by prodigy on 05/05/05 at 13:34:57
Without giveing to much away, it first takes the encryption key and using 2 random variables, which will change at random points, it changes all the alphabetic, numeric and the space character in the text. Although you might be able to see somthing like a double letter in the encrypted version when there was also one in the decrypted version - i.e. hello -> vlnkrru - and this may seem like it's unsecure, the longer the block of text entered the harder it will be to see things like this.
But I would also not recommend sending sensitive information (eg PIN numbers) using this.
This was just made for fun and I thought I would share it.