Questions tagged [elliptic-curve]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
-1 votes
1 answer
88 views

Why do we have "circular behavior" when working with EC over finite field and what makes some point a "turning point"?

Thank you all very much in advance! I will explain best with an example what is not clear to me. Consider the elliptic curve a = 1, b = 2, p = 11 of order 16. Also let's consider the "opposite&...
LeaBit's user avatar
  • 568
1 vote
1 answer
71 views

Is it possible to calculate the correct y coordinate from x coordinate given only x coordinate without any prefix

If I have a x coordinate without any prefix such as 03 or 02 fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556 will it be possible to compute the correct y coordinate that would be ...
Zetock's user avatar
  • 13
0 votes
1 answer
73 views

What am I doing wrong in calculating point addition? Is something redundant in the formula I am using?

First of all, just to note that I am having trouble with this MOD math, so for some this question might be basic, but in my case it caused a lot of confusion. Just for the context. In my previous ...
LeaBit's user avatar
  • 568
0 votes
1 answer
105 views

What is the relationship between parity and the sign of the points on the elliptic curve?

EDIT: I found out that the answer on the second question is just to do 10 * -G, that is, 10 * G(X, -Y) instead of -10 * G. However, I still do not understand relation between parity and the sign of ...
LeaBit's user avatar
  • 568