How Encoding is different from Encryption?
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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 the function of random numbers in encryption and how are they generated?
Do encrypted files contain password in some form?
What is key management ?
What are the counter and pcbc modes?
What is a zed encoder? How does it work?
How to change the location of the Kryptel (Silver Key) program group?
What is multiple encryption?
Blowfish uses the longest key. Does this mean it is the strongest cipher?
What are "stream" and "block" ciphers?
What is the elgamal cryptosystem?