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ristretto255: add Scalar.Invert

This commit is contained in:
Filippo Valsorda 2019-05-15 14:36:17 -04:00
parent bd32259391
commit 760f82e79e
1 changed files with 8 additions and 0 deletions
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8
scalar.go
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@ -45,6 +45,14 @@ func (s *Scalar) Multiply(x, y *Scalar) *Scalar {
return s
}
// Invert sets s = 1 / x such that s * x = 1 mod l and returns s.
//
// If x is 0, the result is undefined.
func (s *Scalar) Invert(x *Scalar) *Scalar {
s.s.Inv(&x.s)
return s
}
// FromUniformBytes sets s to an uniformly distributed value given 64 uniformly
// distributed random bytes.
func (s *Scalar) FromUniformBytes(x []byte) *Scalar {