vss

package

v2.1.5 Latest Latest Go to latest Published: Mar 24, 2026 License: MIT Imports: 7 Imported by: 0

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Valid go.mod file
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Repository

github.com/ModChain/tss-lib

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Documentation ¶

Index ¶

Variables
func CheckIndexes(ec elliptic.Curve, indexes []*big.Int) ([]*big.Int, error)
func Create(ec elliptic.Curve, threshold int, secret *big.Int, indexes []*big.Int, ...) (Vs, Shares, error)
type Share
- func (share *Share) Verify(ec elliptic.Curve, threshold int, vs Vs) bool
type Shares
- func (shares Shares) ReConstruct(ec elliptic.Curve) (secret *big.Int, err error)
type Vs

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	// ErrNumSharesBelowThreshold is returned when there are fewer shares than required by the threshold.
	ErrNumSharesBelowThreshold = fmt.Errorf("not enough shares to satisfy the threshold")
)

Functions ¶

func CheckIndexes ¶

func CheckIndexes(ec elliptic.Curve, indexes []*big.Int) ([]*big.Int, error)

Check share ids of Shamir's Secret Sharing, return error if duplicate or 0 value found

func Create ¶

func Create(ec elliptic.Curve, threshold int, secret *big.Int, indexes []*big.Int, rand io.Reader) (Vs, Shares, error)

Returns a new array of secret shares created by Shamir's Secret Sharing Algorithm, requiring a minimum number of shares to recreate, of length shares, from the input secret

Types ¶

type Share struct {
	Threshold int
	ID,
	Share *big.Int // Sigma i
}

Share represents a single Shamir secret share with its threshold, party ID, and share value.

func (share *Share) Verify(ec elliptic.Curve, threshold int, vs Vs) bool

Verify checks the share against the Feldman VSS commitments to ensure it is consistent.

type Shares ¶

type Shares []*Share

Shares is a slice of secret shares.

func (Shares) ReConstruct ¶

func (shares Shares) ReConstruct(ec elliptic.Curve) (secret *big.Int, err error)

ReConstruct recovers the secret from the shares using Lagrange interpolation.

type Vs ¶

type Vs []*crypto.ECPoint // v0..vt

Vs is a slice of EC points representing the Feldman VSS commitments (v0..vt).

Source Files ¶

View all Source files

feldman_vss.go

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