What are the counter and pcbc modes?
How to change the encrypted file icon?
How do certifying authorities store their private keys ?
What are the advantages of public-key cryptography compared with secret-key cryptography?
What is the mceliece cryptosystem?
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.
What are knapsack cryptosystems?
What is an algorithm?
whats cryptanalysis?
What is probabilistic encryption?
Blowfish uses the longest key. Does this mean it is the strongest cipher?
What are the cfb and ofb modes?
What are "stream" and "block" ciphers?
What is public key encryption?
What is private key cryptography and how we compare it with public key cryptography?
