Question 1
Marks : +2 | -2
Pass Ratio : 100%
In which method cipher feedback is used?
Explanation: In self synchronous encryption technique, cipher feedback is used and the key-stream is related to the messages.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
In which method the key-stream is generated independently of the message?
Explanation: In Synchronous encryption method, the key-stream is generated independently of message.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Perfect secrecy can be achieved for
Explanation: Perfect secrecy can be achieved for infinite number of messages since each message would be encrypted with different portion of random key.