I'm creating a routine that needs some encryption to store license information. I'm currently using a Base64 encryption method which is available in both PHP and VBA (with an added class). I'm currently looking into other encryption methods though - as I think that Base64 might be a little too easy to 'crack'. I was thinking to maybe add a MD5 encryption with a salt, but I have no idea if there's any VBA classes for MD5.
If anyone have any experience on the subject or could point me in the right direction, that would be great.