Function PEM_write_bio_RSAPrivateKey

pub unsafe extern "C" fn PEM_write_bio_RSAPrivateKey(
    bp: *mut BIO,
    rsa: *const RSA,
    cipher: *const EVP_CIPHER,
    kstr: *const c_uchar,
    klen: c_int,
    callback: pem_password_cb,
    user_data: *mut c_void,
) -> c_int