Exemplo n.º 1
0
func NewEcdsaPublicKey(pk *ecdsa.PublicKey) *EcdsaPublicKey {
	pubkey := &EcdsaPublicKey{
		Curve: jwa.EllipticCurveAlgorithm(pk.Params().Name),
	}
	pubkey.X.SetBytes(pk.X.Bytes())
	pubkey.Y.SetBytes(pk.Y.Bytes())
	return pubkey
}
Exemplo n.º 2
0
// NewEcdsaPublicKey creates a new JWK from a EC-DSA public key
func NewEcdsaPublicKey(pk *ecdsa.PublicKey) *EcdsaPublicKey {
	pubkey := &EcdsaPublicKey{
		EssentialHeader: &EssentialHeader{KeyType: jwa.EC},
		Curve:           jwa.EllipticCurveAlgorithm(pk.Params().Name),
	}
	n := pk.Params().BitSize / 8
	pubkey.X.SetBytes(i2osp(pk.X, n))
	pubkey.Y.SetBytes(i2osp(pk.Y, n))
	return pubkey
}
Exemplo n.º 3
0
func constructEcdsaPublicKey(m map[string]interface{}) (*EcdsaPublicKey, error) {
	e, err := constructEssentialHeader(m)
	if err != nil {
		return nil, err
	}
	r := emap.Hmap(m)

	crvstr, err := r.GetString("crv")
	if err != nil {
		return nil, err
	}
	crv := jwa.EllipticCurveAlgorithm(crvstr)

	x, err := r.GetBuffer("x")
	if err != nil {
		return nil, err
	}

	if x.Len() != crv.Size() {
		return nil, errors.New("size of x does not match crv size")
	}

	y, err := r.GetBuffer("y")
	if err != nil {
		return nil, err
	}

	if y.Len() != crv.Size() {
		return nil, errors.New("size of y does not match crv size")
	}

	return &EcdsaPublicKey{
		EssentialHeader: e,
		Curve:           jwa.EllipticCurveAlgorithm(crv),
		X:               x,
		Y:               y,
	}, nil
}