func SignRSAPKCS1v15(priv *PrivateKeyRSA, h crypto.Hash, hashed []byte) ([]byte, error) {
	panic("boringcrypto: not available")
}
func SignRSAPSS(priv *PrivateKeyRSA, h crypto.Hash, hashed []byte, saltLen int) ([]byte, error) {
	panic("boringcrypto: not available")
}
func VerifyRSAPKCS1v15(pub *PublicKeyRSA, h crypto.Hash, hashed, sig []byte) error {

	return C._goboringcrypto_EVP_PKEY_encrypt(ctx, out, outLen, in, inLen)
}

var invalidSaltLenErr = errors.New("crypto/rsa: PSSOptions.SaltLength cannot be negative")

func SignRSAPSS(priv *PrivateKeyRSA, h crypto.Hash, hashed []byte, saltLen int) ([]byte, error) {
	md := cryptoHashToMD(h)
	if md == nil {
		return nil, errors.New("crypto/rsa: unsupported hash function")
	}

	// well-specified way.

	if boring.Enabled && rand == boring.RandReader {
		bkey, err := boringPrivateKey(priv)
		if err != nil {
			return nil, err
		}
		return boring.SignRSAPSS(bkey, hash, digest, opts.saltLength())
	}
	boring.UnreachableExceptTests()

	if opts != nil && opts.Hash != 0 {
		hash = opts.Hash
	}

	saltLength := opts.saltLength()
	switch saltLength {