AES Cipher Key Strength

[basiliojohn]

Hi All,

I need to create an application that decrypts data that is encrypted using AES with a 512-bit key. What I need to know is whether we can create an AES key of length 512-bits? The documentation says we can create a key of length up to 256-bits. If that is the case, is there any way that I can add my own implementation for 512-bit AES key, or will I have to reduce the key strength used to encrypt the data originally?

Thanks,

Basilio

[basiliojohn]

AES does not have a 512-bit key. It seems i am in need to check my input data!