Until recently, the most significant use of triple-DES was for the encryption of single DES keys, and there was really no need to consider how one might implement various block cipher modes when the block cipher in question is actually one derived from multiple encryption. However, as DES nears the end of its useful lifetime, more thought is being given to an increasingly widespread use of triple-DES.
Explain Kerckhoff’s Principle for Cryptosystem?
ElGamal encryption system is A. symmetric key encryption algorithm B. asymmetric key encryption algorithm C. not an encryption algorithm D. none of the mentioned
An asymmetric-key (or public-key) cipher uses 1 Key 2 Key 3 Key 4 Key
1. How many computation rounds does the simplified AES consists of? a) 5 b) 2 c) 8 d) 10
On perform the Mix Columns transformation for the sequence of bytes “67 89 AB CD” we get output
a) {08 55 FF 18}
b) {28 45 EF 08}
c) {28 45 FF 18}
d) {25 35 EF 08}Explain me what is Diffie-Hellman?
Cryptanalysis is used A. to find some insecurity in a cryptographic scheme B. to increase the speed C. to encrypt the data D. none of the mentioned
Which of the following is a faulty S-AES step function? a) Add round key b) Byte substitution c) Shift rows d) Mix Columns
Explain me what is Cryptanalysis?
Do you know advanced Encryption Standard?
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