Cryptography: Advanced Encryption Standard - Facts

1. What was the original set of criteria used by NIST to evaluate candidate AES ciphers?

• Security: Actual security; randomness; soundness, other security factors.
• Cost: Licensing requirements; computational efficiency; memory requirements.
• Algorithm and Implementation Characteristics: Flexibility; hardware and software suitability; simplicity.

1. What was the final set of criteria used by NIST to evaluate candidate AES ciphers?

General security; software implementations; restricted-space environments; hardware implementations; attacks on implementations; encryption vs. decryption; key agility; other versatility and flexibility; potential for instruction-level parallelism. 

1. What is the difference between Rijndael and AES 

The basic idea behind power analysis is the observation that the power consumed by a smart card at any particular time during the cryptographic operation is related to the instruction being executed and to the data being processed.