Discrete Mathematics Ciphers Online Exam Quiz
Discrete Mathematics Ciphers GK Quiz. Question and Answers related to Discrete Mathematics Ciphers. MCQ (Multiple Choice Questions with answers about Discrete Mathematics Ciphers
Suppose in order to get a message across enemy lines, we need to choose an initial secret key say, 100110. What will be the decrypted cipher when the original message is 010010011.
Options
A : 110100
B : 1001011
C : 0011010
D : 011011
What is the block size of blowfish block cipher?
Options
A : 64 bits
B : 128 bits
C : 1043 bits
D : 10 bits
How many bits are there for random bits and error detection bits in the case of DES block ciphers?
Options
A : 72, 1024
B : 56, 8
C : 104, 45
D : 32, 198
_______ is an example of asymmetric ciphers.
Options
A : Block cipher
B : RSA encryption
C : AES encryption
D : Advanced cryptology
Electronic Code Book process is used in ________
Options
A : caesar cipher
B : antisymmetric cipher
C : block cipher
D : stream cipher
What are the steps in the Feistel function?
Options
A : expansion, mixing, substitution, permutation
B : extract, transform, load
C : extract, load, transform
D : expansion, divide, mixing, permutation
In which cipher each letter of the plaintext is substituted by any other letter to form the cipher message?
Options
A : Shift cipher
B : DES encryption
C : Block cipher
D : AES encryption
______ uses the concept of pseudo-random sequence.
Options
A : Stream cipher
B : DES encryption
C : Caesar cipher
D : Block cipher
What type of algorithm does AES encryption use?
Options
A : Stream cipher
B : Symmetric block cipher
C : Asymmetric caesar cipher
D : DES encryption
There is no secret key in case of ____________
Options
A : Symmetric ciphers
B : Asymmetric ciphers
C : RSA encryption
D : Alpha-numeric cryptography
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