is there an encrypt function that works in both VB and PHP?

[Jpoel]

Heres what i want to do:

 

In my Visual Basic form i send data to a PHP script through a hidden web-browser,

 

A user of my program has a User ID, i want to encrypt this UserID using Visual basic, into some sort of code,

 

I then want to pass this User ID and the encrypted User ID to PHP,

 

PHP then decrypts the Encrypted User ID, and compares it to the normal User ID, and if they match, the php script that i am going to write executes

 

if they do not match, a message like: "Invalid session." appears, and the script is not executed

 

i want to do this, as i want maximum security when submitting PHP scripts using VB, as i am aware people can decompile my visual basic code, find the link to the php file, and much around with it.

 

Thanks.

[resago]

well, base64crypt is already built into php.