panic("boringcrypto: not available")
}
func NewPublicKeyECDSA(curve string, X, Y BigInt) (*PublicKeyECDSA, error) {
	panic("boringcrypto: not available")
}
func SignMarshalECDSA(priv *PrivateKeyECDSA, hash []byte) ([]byte, error) {
	panic("boringcrypto: not available")
}
func VerifyECDSA(pub *PublicKeyECDSA, hash []byte, sig []byte) bool {
	panic("boringcrypto: not available")
}

	// to make sure k is not collected (and finalized) before the cgo
	// call returns.
	runtime.SetFinalizer(k, (*PrivateKeyECDSA).finalize)
	return k, nil
}

func SignMarshalECDSA(priv *PrivateKeyECDSA, hash []byte) ([]byte, error) {
	size := C._goboringcrypto_ECDSA_size(priv.key)
	sig := make([]byte, size)
	var sigLen C.uint

	randutil.MaybeReadByte(rand)

	if boring.Enabled && rand == boring.RandReader {
		b, err := boringPrivateKey(priv)
		if err != nil {
			return nil, err
		}
		return boring.SignMarshalECDSA(b, hash)
	}
	boring.UnreachableExceptTests()

	csprng, err := mixedCSPRNG(rand, priv, hash)
	if err != nil {
		return nil, err
	}

	if sig, err := signAsm(priv, csprng, hash); err != errNoAsm {