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v1.0.1 Latest Latest Go to latest Published: Aug 28, 2023 License: Apache-2.0 Imports: 5 Imported by: 0

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Repository

github.com/okx/threshold-lib

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Documentation ¶

Index ¶

func CalLagrangian(curve elliptic.Curve, x, y *big.Int, xList []*big.Int) *big.Int
func RecoverSecret(curve elliptic.Curve, pointList []*Share) *big.Int
type Feldman
- func NewFeldman(threshold, limit int, curve elliptic.Curve) (*Feldman, error)
- func (fm *Feldman) Evaluate(secret *big.Int) ([]*curves.ECPoint, []*Share, error)
- func (fm *Feldman) Verify(share *Share, verifiers []*curves.ECPoint) (bool, error)
type Polynomial
- func InitPolynomial(curve elliptic.Curve, secret *big.Int, degree int) (*Polynomial, error)
- func (p *Polynomial) EvaluatePolynomial(x *big.Int) *Share
type Share

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func CalLagrangian ¶

func CalLagrangian(curve elliptic.Curve, x, y *big.Int, xList []*big.Int) *big.Int

CalLagrangian lagrangian interpolation wi, x = sum(wi)

func RecoverSecret ¶

func RecoverSecret(curve elliptic.Curve, pointList []*Share) *big.Int

RecoverSecret recover secret key

Types ¶

type Feldman ¶

type Feldman struct {
	// contains filtered or unexported fields
}

verifiable secret sharing scheme

func NewFeldman ¶

func NewFeldman(threshold, limit int, curve elliptic.Curve) (*Feldman, error)

NewFeldman

func (*Feldman) Evaluate ¶

func (fm *Feldman) Evaluate(secret *big.Int) ([]*curves.ECPoint, []*Share, error)

Evaluate return verifiers and shares

func (*Feldman) Verify ¶

func (fm *Feldman) Verify(share *Share, verifiers []*curves.ECPoint) (bool, error)

Verify check feldman verifiable secret sharing

type Polynomial ¶

type Polynomial struct {
	Coefficients []*big.Int // polynomial coefficient, eg: [a0, a1, a2 ...]
	QMod         *big.Int
}

func InitPolynomial ¶

func InitPolynomial(curve elliptic.Curve, secret *big.Int, degree int) (*Polynomial, error)

InitPolynomial init Coefficients [a0, a1....at] t=degree

func (*Polynomial) EvaluatePolynomial ¶

func (p *Polynomial) EvaluatePolynomial(x *big.Int) *Share

EvaluatePolynomial a polynomial with coefficients such that: EvaluatePolynomial(x):

returns a + bx + cx^2 + dx^3

type Share struct {
	Id *big.Int // x-coordinate
	Y  *big.Int // y-coordinate
}

secret share

Source Files ¶

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