What is exhaustive key search ?
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What happens when a key expires ?
why hash functions are not used for encryption but authentication ?
Is there a limit on the file size or on the number of encrypted files?
What is the rabin signature scheme?
What is key management ?
How to change the encrypted file icon?
What is merkles tree 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.
How can we use quantum properties in cryptography ?
Does encryption of connection strings in web.config file possible? How?
What is the function of random numbers in encryption and how are they generated?
How should I store my private key ?