Function Sign

sign/bls/bls.go:25–33

Sign creates a BLS signature S = x * H(m) on a message m using the private key x. The signature S is a point on curve G1.

(suite suites.Suite, x kyber.Scalar, msg []byte)

// Sign creates a BLS signature S = x * H(m) on a message m using the private
// key x. The signature S is a point on curve G1.
func Sign(suite suites.Suite, x kyber.Scalar, msg []byte) ([]byte, error) {
	HM := hashToPoint(suite, msg)
	xHM := HM.Mul(x, HM)
	s, err := xHM.MarshalBinary()
	if err != nil {
		return nil, err
	}
	return s, nil
}

// Verify checks the given BLS signature S on the message m using the public
// key X by verifying that the equality e(H(m), X) == e(H(m), x*B2) ==