Discrete Mathematics Cryptography Encryption Online Exam Quiz
Discrete Mathematics Cryptography Encryption GK Quiz. Question and Answers related to Discrete Mathematics Cryptography Encryption. MCQ (Multiple Choice Questions with answers about Discrete Mathematics Cryptography Encryption
Let A’s public key is n=6, 736, 180, 7817, 961, 456, 267 and e = 5 and B sends the ciphertext. c = 456, 871, 122, 391, 882, 538 to A. Determine B’s message in numeric format?
Options
A : 235813
B : 57971.89
C : 770190.04
D : 687651.9
How many bytes of the secret key is generated using Diffie-Hellman encryption/decryption scheme?
Options
A : 256
B : 871
C : 1024
D : 962
How many combinations of keys can be constructed from a 72 ciphertext stream cipher?
Options
A : 4271
B : 7345
C : 3291
D : 2556
What is the block size of RC6 Feistel block cipher?
Options
A : 5013 bits
B : 128 bits
C : 596 bits
D : 1768 bits
The default key size of RC2 Feistel cipher is _______
Options
A : 64GB
B : 64 bits
C : 64 bytes
D : 64KB
If there are 256 cipher texts per plain text and a total of 218 plaintexts of length 18 exists. Then determine the number of distinct ciphertexts?
Options
A : 761
B : 274
C : 186
D : 289
In encryption, which of the following is the best text encoding technique?
Options
A : ASCII encoding
B : Hex-encoding
C : Unicode technique
D : Base64 encoding
In which of the following systems, encryption slower than decryption?
Options
A : elliptic curve cryptography
B : parabolic curve cryptography
C : symmetric cryptography
D : antisymmetric cryptography
_______ are used as the base of the Public Key Infrastructure.
Options
A : SSL certificates
B : TLS certificates
C : X.509 certificates
D : HAS certificates
TEA cipher uses which of the following structure?
Options
A : standard cipher structure
B : pseudo random structure
C : feistel structure
D : block structure
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