Do digital signatures help detect altered documents and transmission errors?
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what is the difference between encryption and hashing?
How to I prevent other users from using Kryptel (Silver Key)?
How Encoding is different from Encryption?
What are the counter and pcbc modes?
What is decryption?
What is the difference between hardware and software encryption?
Actual role of cryptography is data security .Explain with real world example?
What is public-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 information can be obtained from encrypted file?
Blowfish uses the longest key. Does this mean it is the strongest cipher?
What is probabilistic encryption?
Cryptography Algorithms 
