i2d_RSAPrivateKey
return PEM_ASN1_write((i2d_of_void *)i2d_RSAPrivateKey, PEM_STRING_RSA, fp,
return PEM_ASN1_write_bio((i2d_of_void *)i2d_RSAPrivateKey, PEM_STRING_RSA, bp,
return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);
int i2d_RSAPrivateKey(const RSA *a, unsigned char **out);