Question

“In ECC, the inverse of point P =(x1, y1) is Q = (-x1, y1). “

(a) True

(b) False

I had been asked this question in an interview.

My enquiry is from Elliptic Curve Arithmetic/Cryptography topic in section Other Public Key Cryptosystems and Cryptographic Hash Functions of Cryptograph & Network Security

Answer 1

Correct choice is (b) False

Explanation: The inverse of point P =(x1, y1) is Q =(x1, -y1).