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package common
import (
"crypto/sha512"
"kesim.org/seal/curve"
)
// Common functions for the various proofs
type Scalar = curve.Curve25519Scalar
type Point = curve.Curve25519Point
var Curve = curve.Curve25519
var G = Curve.Generator()
var One = Curve.ScalarOne()
type Bytes interface {
Bytes() []byte
}
type Bites []byte
func (b Bites) Bytes() []byte { return b }
func Challenge(bs ...Bytes) *Scalar {
h512 := sha512.New()
for _, p := range bs {
h512.Write(p.Bytes())
}
ch, e := Curve.ScalarFromBytes(h512.Sum(nil))
if e != nil {
panic(e)
}
return ch
}
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