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Answer Posted / pugal
A cryptosystem or cipher system is a method of disguising
messages so that only certain people can see through the
disguise. Cryptography is the art of creating and using
cryptosystems. Cryptanalysis is the art of breaking
cryptosystems---seeing through the disguise even when
you're not supposed to be able to. Cryptology is the study
of both cryptography and cryptanalysis.
| Is This Answer Correct ? | 6 Yes | 1 No |
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What is an encryption "key" and what is the importance of key length?
What is key management ?
What information can be obtained from encrypted file?
whats cryptanalysis?
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.
Is there a limit on the file size or on the number of encrypted files?
What are the cfb and ofb modes?
What is decryption?
What is merkles tree signature scheme?
What is the Popular Symmetric-Key Encryption Method
What is public-key cryptography ?
What is the difference between a message authentication code (MAC) and a one-way hash?
What are "stream" and "block" ciphers?
What are the ecb and cbc modes?
How Encoding is different from Encryption?
