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Actual role of cryptography is data security .Explain with
real world example?
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What is an algorithm?
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 probabilistic encryption?
What is the function of random numbers in encryption and how are they generated?
What are the ecb and cbc modes?
What is an encryption "key" and what is the importance of key length?
What is luc?
What is nonlinear cryptography?
What is public-key cryptography ?
What is cryptographic synchronisation?
what is pretty good privacy?
WHAT IS A SAMPLE USER INTERFACE OF DES ENCRYPTION/DECRYPTION PROJECT?
Cryptography Algorithms 
