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UGC-NET 2018: ( I-T Cryptography) SpeedTest Quiz 31
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Question 1
An electronic safe has a key which is made up of 5 digits (not necessary distinct). It is alos known that the first digit is three time sthe last digit. The third digit is 3 less than the second digit and fourth digit is 4 more than the second digit. Also there are 3 pairs of digits which add upto give 11. The 5 digit number which can open the electronic lock of the safe is______
Question 2
Suppose that everyone in a group of Npeople wants to communicate secretly with the N-1 others using symmetric key cryptographic system. The communication between any two persons should not be decodable by the others in the group. The number of keys required in the system as a whole to satisfy the confidentiality requirement is
Question 3
In RSA algorithm, prime numbers used are 5 and 7.Value of e is 3. Encrypt the message 654.
Question 4
Ram and Sita uses the Diffie-Hellman Protocol for generating session key. Ram chooses y = 3 and Sita chooses x = 5. Identify session key value if G = 7 and N = 23
Question 5
Which of the following security services is/are not provided by digital signature?
1. Authentication of message
2. Integrity
3. Privacy
4. Non repudiation
1. Authentication of message
2. Integrity
3. Privacy
4. Non repudiation
Question 6
Consider a secured environment making use of symmetric key Crytography. Every host connects every other host. Calculate the number of unique keys required (symmetric Keys) if there are 5 hosts in the network.
Question 7
In which cipher method, plain text characters gets shifted to regular pattern to form cipher text.
Question 8
For a given RSA algorithm, we have two prime numbers p=5, q=13, if the public key pair is e=11,n=65 then private key d is____.
Question 9
We know that RSA algorithm is used to encrypt the data which is being sent. It is implemented in ______ layer.
Question 10
Anarkali digitally signs a message and sends it to Salim. Verification of the signature by Salim requires
- 522 attempts
- 4 upvotes
- 8 comments
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GATE & PSU CSGeneralJul 6GATE & PSU CS
