// Implements the data structures and methods for
// creating a commitment for the SEAL protocol
package commitment

import (
	"kesim.org/seal/curve"
)

type Scalar = curve.Curve25519Scalar
type Point = curve.Curve25519Point

var Curve = curve.Curve25519

type Bidder struct {
	private struct {
		id *Scalar
	}
	Id *Point
}

type Bid struct {
	Bidder *Point
	zbid   uint64 // bigendian encoding of the bid
	bits   []Bit  // derived from zbid
}

type Bit struct {
	id *Scalar
	v  bool
	x  *Scalar
	r  *Scalar
	e  *BitCommitment
}

type BitCommitment struct {
	Id  *Point
	XRV *Point
	X   *Point
	R   *Point

	Proofs struct {
		X *Proof
		R *Proof
	}
}

type Proof struct {
	PV *Point  `json:"V"`
	Sr *Scalar `json:"r"`
}