
UNIT3-PUBLIC KEY CRYPTOGRAPHY
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Education
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University
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Medium
B.REENA CSE
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
One commonly used public-key cryptography method is the ______ algorithm.
RSA
AES
DES
Both AES & DES
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
The ________ method provides a one-time session key for two parties.
Diffie Hellman
RSA
AES
DES
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Using Rivest, Shamir, Adleman cryptosystem with p=7 and q=9. Encrypt M=24 to find ciphertext. The Ciphertext is:
114
42
93
110
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Suppose that two parties A and B wish to setup a common secret key (D-H key) between themselves using the Diffie-Hellman key exchange technique. They agree on 7 as the modulus and 3 as the primitive root. Party A chooses 2 and party B chooses 5 as their respective secrets. Their D-H key is
3
4
5
6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
One characteristic/drawback of ElGamal Encryption scheme
Deterministic
Unconditional security
Cipher text is double the size of the plain text
None of the above
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the hardness assumption behind Schnorr Digital signature scheme?
Decisional Diffie-Hellman Assumption
Computational Diffie-Hellman Assumption
Discrete logarithm
Factoring Assumption
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one is not the property of hash functions?
Efficient
Easy to invert
Collision resistant
Avalanche Effect
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