What is the elgamal cryptosystem?
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What is cryptology?
What if a certifying authority?s key is lost or compromised ?
What is meant by 1024, 2048, 5096 bit encryption?
What is cryptographic synchronisation?
How to change the location of the Kryptel (Silver Key) program group?
How does one get a key pair ?
What is Plaintext?
What is nonlinear cryptography?
How to remove the Kryptel (Silver Key) icon from the desktop?
what is pretty good privacy?
What are the ecb and cbc modes?
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.