Is there a better one ? Encryption -> AES. PRNG -> Blum Blum Shub?

Is there a better algorithm than AES-256 ?

AES is an industry standard symmetric algorithm. But theoretically its told to have flaws. Is there any symmetric algorithm (needn't be a standard), that's highly praised for its security? I'm collecting information on algorithms in-order to make a wallet to store some text for a specific device.

I read that Blum Blum Shub is a notable pseudo random generator algorithm, mainly used in cryptography rather than simulation. Here my focus is cryptography. So is it the best PRNG out there or is there any better one? I wanted to implement it for an ARM A8 Core CPU architecture in ARM assembly just from learning the asm, the architecture, and those algorithms in depth.

Does (or is it possible) using a gpu for encryption/decryption any better? My device in interest is N900 tablet (t开发者_运维问答o learn more about the hardware and software).

It is true that AES is not the best and newest security algorithm but it may be the one with the ARM8 because it is part of the supply contract and may not be replaceable - it could be for compliance with FIPS standards in the US or the method the country or province of intended use has specified. You could do simple manipulate or substitute of text or numeric data yourself before sending it to AES and remember to write the code for the reverse process so you can reconstruct the data correctly and write, display or print it out.