Question: The initial encryption standard developed by NIST was called data encryption standard (DES). DES is too weak for modern applications since the key size is

The initial encryption standard developed by NIST was called data encryption standard (DES). DES is too weak for modern applications since the key size is only 56-bit. It was replaced by advanced encryption standard (AES). AES has variable key sizes and can require a key size of 256-bit. Discuss if you think AES key size has a direct relationship with algorithm strength. Do you think that AES-256 is necessarily better than AES-128? How long do you think it would take to launch a brute force attack on AES-128 using a standard computer?

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