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I'm final year undergraduate, i came across this encryption standarad and when i met my professor about this encyption standarad, he said ok go on with it, but he is not willing to guide me from basics, if any of you can help me to get the AES basic terminology and basics like how sbox are created, is there any relation between sbox and inverse sbox, why number of rounds are prefixed(know there are some bits and bytes conversion) for different key lenghts, and modes of operation, difference between each of them.

Thanking you.

Yours Sincerely.

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I'd suggest getting a book from your library that covers AES. Most introductory cryptography textbooks will. Read that and then come back here with specific questions. Be sure to search for answers to those questions first as some of them are already on here. – mikeazo♦ Dec 18 '12 at 17:23
Get the Rijndael submission to NIST. Not an easy reading (and certainly not an introduction to block ciphers), but answers to why things are like they are can often be found in that doc. – fgrieu Dec 18 '12 at 17:26
Or, if your library has this book: The design of Rijndael – Paŭlo Ebermann♦ Dec 18 '12 at 20:40

closed as off topic by mikeazo♦ Dec 18 '12 at 18:58

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