Method Eval

share/poly.go:326–334

Eval computes the public share v = p(i).

(i int)

// Eval computes the public share v = p(i).
func (p *PubPoly) Eval(i int) *PubShare {
	xi := p.g.Scalar().SetInt64(1 + int64(i)) // x-coordinate of this share
	v := p.g.Point().Null()
	for j := p.Threshold() - 1; j >= 0; j-- {
		v.Mul(xi, v)
		v.Add(v, p.commits[j])
	}
	return &PubShare{i, v}
}

// Shares creates a list of n public commitment shares p(1),...,p(n).
func (p *PubPoly) Shares(n int) []*PubShare {