I have an elliptic curve $E\left (\mathbb{F}_p \right )$, where $p=4ln-1$ is prime, for a small $l$
I am told there is a point $P \in E\left ( \mathbb{F}_p \right )$ of order $n$ which can be calculated as follows:
- Choose a random $P'\in E \left ( \mathbb {F}_p\right )$
- Set $P=\left [4l\right ]P'$
Could someone explain the $\left [ \cdot \right]$ notation to me please