Antal soon finished the University of Law. After that he served as press officer of Prime Minister Gyula Gömbös, later became state secretary of the Ministry of Justice. He was member of the Miklós Kállay cabinet from 1942 as Minister without portfolio of National Defence and Propaganda. After the German occupation the new prime minister Döme Sztójay appointed him Minister of Justice and Minister of Religion and Education. In these times he actively took a part in creating the newer anti-Jewish laws and its introduction. He did not take part in the governance after the Arrow Cross Party's coup. In addition he was arrested for a short time, because of criticizing Ferenc Szálasi's mental efficiency.
After the Second World War he was sentenced to death for war crimes by the People's Tribune in Budapest, but he was not executed after Mátyás Rákosi's personal intervention. For the second time he was sentenced to life imprisonment. Antal was set free in 1960, lived until his death in retirement. His memoirs were published in 2004.