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Perfect secrecy can be achieved for

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in Digital Communications by (828k points)
Perfect secrecy can be achieved for

(a) Finite number of messages

(b) Infinite number of messages

(c) Finite & Infinite number of messages

(d) None of the mentioned

I have been asked this question in an interview for internship.

Origin of the question is Stream Encryption and Commercial Applications in portion Spread Spectrum Techniques of Digital Communications

1 Answer

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Best answer
Right choice is (b) Infinite number of messages

Explanation: Perfect secrecy can be achieved for infinite number of messages since each message would be encrypted with different portion of random key.

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