What is triple DES?
What are some group-theoretic properties of product ciphers?
What makes a product cipher secure?
What are the most important attacks on stream ciphers ?
What can be proven about the security of a product cipher?
Can symmetric block ciphers be used for message authentication?
What is a block cipher ? what are various block ciphers?
Is ECB cipher mode faster than CBC ?
What are IP Tunnels?
Is DES available in software?
what is ECB?
What are the properties of product ciphers?
How was NSA involved in the design of DES?