What is triple DES?
Can DES be used to protect classified information?
How are block ciphers used to encrypt data longer than the block size?
Can symmetric block ciphers be used for message authentication?
What are typical key spaces for symmetric and asymmetric ciphers?
What can be proven about the security of a product cipher?
What is a block cipher ? what are various block ciphers?
What are good sources of randomness?
Which of the two ciphers have the larger key space?
What is a product cipher?
What exactly is DES?
What is a stream cipher ? what are various stream ciphers?
What are the most important attacks on symmetric block ciphers?