OpenSSL::Timestamp::TokenInfo#to_der

static VALUE
ossl_ts_token_info_to_der(VALUE self)
{
    TS_TST_INFO *info;

    GetTSTokenInfo(self, info);
    return asn1_to_der((void *)info, (int (*)(void *, unsigned char **))i2d_TS_TST_INFO);
}