return RSA_size(rsa);
}
#if OPENSSL_VERSION_NUMBER < 0x10100005L || defined(LIBRESSL_VERSION_NUMBER)
#if OPENSSL_VERSION_NUMBER < 0x10100005L || ( defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x3000000L )
int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth))
(int flen, const unsigned char *from,