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In a trapdoor function, the functions are easy to go in

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In a trapdoor function, the functions are easy to go in

(a) One direction

(b) Two directions

(c) All directions

(d) None of the mentioned

This question was addressed to me during an online interview.

My doubt stems from Public Key Cryptosystems topic in chapter Encryption and Decryption of Digital Communications

1 Answer

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Best answer
The correct answer is (a) One direction

To elaborate: A trapdoor is a one way function. Such functions can go easily in only one direction.

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