vss

Documentation

Overview

Author: xingchang@fusion.org

Index

• Variables
• func Combine(shares []*ShareStruct) (*big.Int, error)
• func GetSharesId(ss *ShareStruct) *big.Int
• func Vss(secret *big.Int, ids []*big.Int, t int, n int) (*PolyGStruct, *PolyStruct, []*ShareStruct, error)
• type PolyGStruct
• type PolyStruct
• type ShareStruct
  • func (share *ShareStruct) Verify(polyG *PolyGStruct) bool

Variables

var ErrIdNoEqualN = errors.New("[ERROR]: the length of input ids is not equal to the share number n.")

var ErrShareNotPass = errors.New("[ERROR]: the set of shares contain invalid share.")

var ErrShareNotEnough = errors.New("[ERROR]: the shares is not enough to satisfy the threshold.")

Functions

func Combine

func Combine(shares []*ShareStruct) (*big.Int, error)

func GetSharesId

func GetSharesId(ss *ShareStruct) *big.Int

func Vss

func Vss(secret *big.Int, ids []*big.Int, t int, n int) (*PolyGStruct, *PolyStruct, []*ShareStruct, error)

Types

type PolyGStruct

type PolyGStruct struct {
	T     int          // threshold
	N     int          // total num
	PolyG [][]*big.Int //x and y
}

type PolyStruct

type PolyStruct struct {
	PolyGStruct
	Poly []*big.Int // coefficient set
}

type ShareStruct

type ShareStruct struct {
	T     int
	Id    *big.Int // ID, x coordinate
	Share *big.Int
}

func (*ShareStruct) Verify

func (share *ShareStruct) Verify(polyG *PolyGStruct) bool