Jacques Stern

Jacques Stern (born 21 August 1949) is a cryptographer, currently a professor at the École Normale Supérieure, where he is Director of the Computer Science Laboratory. He received the 2006 CNRS Gold Medal. His notable work includes the cryptanalysis of numerous encryption and signature schemes, the design of the Pointcheval–Stern signature algorithm, the Naccache–Stern cryptosystem and Naccache–Stern knapsack cryptosystem, and the block ciphers CS-Cipher, DFC, and xmx. Recently a spectacular total break of the SFLASH cryptosystem was discovered by Jacques Stern.

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Jacques Stern (politician)

Jacques Stern (14 April 1882 – 21 December 1949) was a wealthy French banker and politician. He was Minister of Merchant Marine in 1993 and Minister of the Colonies in 1936. While in exile in the United States during World War II (1939–45) he wrote a passionate defense of France's colonial mission.

Early years (1882–1914)

Jacques Stern was born on 14 April 1882 in Paris. He was a banker, owner of a racing stable, and one of the wealthiest members of Paris society in the period before World War I (1914–18). He was president of the Southern Railway Company (Compagnie des chemins de fer du Sud de la France). His wife was Simone de Leusse.

Political career (1914–40)

He was interested in a political career, and assisted the cabinet of Léon Bourgeois. He was elected to the general council of the Basses-Alpes department. Stern ran for election to the legislature in April–May 1914 for the Castellane district, and was elected in the second round. He was a deputy for this district of Basses-Alpes from 10 May 1914 to 7 December 1919, sitting with the Radical Left. He sat on various committees, and was mainly interested in issues of finance and communications. He ran for reelection in 1919 and 1924 but was defeated both times.