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What is an algorithm?
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What is private key cryptography and how we compare it with public key cryptography?
What is the rabin signature scheme?
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 is multiple encryption?
What is key recovery ?
What happens if a private key is compromised ?
What is secret-key cryptography ?
What if a certifying authority?s key is lost or compromised ?
What are knapsack cryptosystems?
what is the difference between encryption and hashing?
Who needs a key pair ?
What information can be obtained from encrypted file?
Cryptography Algorithms 
