What is a message digest?2 3327
What are some of the more popular techniques in cryptography ?
What is privacy ?
What is IEEE P1363 ?
What are the most important attacks on symmetric block ciphers?
What is an encryption "key" and what is the importance of key length?
How much extra message length is caused by using RSA?
What are digital certificates ?
What are some of the basic types of cryptanalytic attack ?
A company wants to transmit data over the telephone, but it is concerned that its phones may be tapped. All of its data is transmitted as four-digit integers. It has asked you to write a program that will encrypt its data so that the data may be transmitted more securely. Your script should read a four digit integer entered by the user in a prompt dialog and encrypt it as follows: Replace each digit by (the sum of that digit plus 7) modulus 10. Then swap the first digit with the third, and swap the second digit with the fourth. Then output XHTML text that displays the encrypted integer.
How does the Clipper chip work?
Should one test for weak keys in DES ?
What are the ITU-T (CCITT) Standards ?
How can signatures remain valid beyond the expiration dates of their keys, or, How do you verify a 20-year-old signature?
What are proactive security techniques ?
What is a hard problem ?