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Answer Posted / pugal
The original message is called a plaintext. The disguised
message is called a ciphertext. Encryption means any
procedure to convert plaintext into ciphertext. Decryption
means any procedure to convert ciphertext into plaintext.
| Is This Answer Correct ? | 30 Yes | 5 No |
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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?
Is there a limit on the file size or on the number of encrypted files?
What is exhaustive key search ?
what is pretty good privacy?
What is are "proprietary" and "public" cryptographic algorithms?
What is the difference between Kryptel and Silver Key?
What is nonlinear cryptography?
What are the counter and pcbc modes?
What is multiple encryption?
What are some other public key cryptosystems ?
Blowfish uses the longest key. Does this mean it is the strongest cipher?
How Encoding is different from Encryption?
whats cryptanalysis?
What are the cfb and ofb modes?
