what are some of the current encryption schemes?
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What is are "proprietary" and "public" cryptographic algorithms?
what is trapdoor and how does it works?
What is decryption?
Do encrypted files contain password in some form?
What are the advantages and disadvantages of public key cryptography compared with secret key cryptography ?
Do digital signatures help detect altered documents and transmission errors?
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.
whats cryptanalysis?
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.
Is there a limit on the file size or on the number of encrypted files?
How do certifying authorities store their private keys ?
What is key recovery ?