static int nuron_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
static int nuron_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
static int nuron_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)	{	return nuron_mod_exp(r0,I,rsa->d,rsa->n,NULL);	}