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How to remove the Kryptel (Silver Key) icon from the
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What are the disadvantages of public-key cryptography compared with secret-key cryptography?
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 an encryption "key" and what is the importance of key length?
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How does one get a key pair ?
why hash functions are not used for encryption but authentication ?
Actual role of cryptography is data security .Explain with real world example?
What is the rabin signature scheme?
What is public-key cryptography ?
How Encoding is different from Encryption?
What is exhaustive key search ?
Cryptography Algorithms 
