Let $E$ be an elliptic cuve on finite field, $P\in E$ be a rational point. Then, I want to get one of point $Q\in E$ such that $2Q=P$.
What shoud I do?
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 | 1 | initial version |
Get a half point of a point on elliptic curve.
| | 2 | retagged |
Get a half point of a point on elliptic curve.
Let $E$ be an elliptic cuve on finite field, $P\in E$ be a rational point. Then, I want to get one of point $Q\in E$ such that $2Q=P$.
What shoud I do?
