multiplication of two points belong to elliptic curve

I have a question about multiplication of two points belong to elliptic curve. I know every think about adding and scalar multiplication but not about multiplication of two points. Is there any method for this?

The reason that I need this is that in paper "Attributed-based encryption for fine-grained access control of encrypted data", we need choose group G and then a point g as the generator of this group. Then in setup algorithm, we should calculate g to the power of t1, while t1 is a number. So it means that we should multiply g into itself for t1 times. If we choose an elliptic field, how could we do this multiplication?

Thanks

It's not clear why they decided to refer to the elliptic curve as a multiplicative group and not an additive one. Their paper is from 2006; I had thought that, by that time, the additive convention was fairly prevalent. One possibility is that they looked at the convention of $\mathbb{G}_2$. The group $\mathbb{G}_2$ has an operation which is multiplication over a finite field (at least with any pairing operation you'd actually use), and hence is always written multiplicatively. Perhaps they decided to write the operations in $\mathbb{G}_1$ (the elliptic curve group) to be consistent with it.