Rivett joined the Melbourne Argus in 1940. By 1941 he was working as a broadcaster in Singapore, where he became a captive of the Japanese.
He later described his experiences in the best-selling 'Behind Bamboo'.
In 1951 he became editor-in-chief of Adelaide's Daily News, and worked closely with its new owner, Rupert Murdoch. Under their leadership, the paper forced a royal commission into the murder conviction of Rupert Max Stuart, an Aborigine.
Rivett later became director of the International Press Institute, based in Zurich.
Watch the video tribute: