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Blowfish uses the longest key. Does this mean it is the
strongest cipher?
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What is private key cryptography and how we compare it with public key cryptography?
What is the function of random numbers in encryption and how are they generated?
What are some other public key cryptosystems ?
What if a certifying authority?s key is lost or compromised ?
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.
why hash functions are not used for encryption but authentication ?
What is the elgamal cryptosystem?
What is the difference between hardware and software encryption?
What is decryption?
Hello. In Snort, how a digital signature is actually created for the authentication purpose and thereby provides intrusion detection as well as prevention. How the software for IDS/IPS comes to know regarding the threat/vulnerability using digital signature ? Whether any specific language or programming is used or not.
What is Ciphertext?
How can we use quantum properties in cryptography ?
Cryptography Algorithms 
