How do I change the password / the cipher?
Name different symmetric ciphers?
What is a one-time-pad?
What is a block cipher ? what are various block ciphers?
What are the properties of product ciphers?
What are typical key spaces for symmetric and asymmetric ciphers?
How are block ciphers used to encrypt data longer than the block size?
Name different asymmetric ciphers?
What exactly is DES?
Is DES available in hardware?
What are some group-theoretic properties of product ciphers?
What is the meaning of apostrophies in ciphers - ideas?
What are the most important attacks on stream ciphers ?