Johannes Buchmann

Johannes Alfred Buchmann (born November 20, 1953, in Cologne) is a German computer scientist, mathematician and professor emeritus at the department of computer science of the Technische Universitat Darmstadt, recognized for contributions to algorithmic number theory, algebra, post-quantum cryptography and IT security. In 1993, he shared the Gottfried Wilhelm Leibniz Prize with Claus Peter Schnorr for work in algorithmic number theory and cryptography, and he developed XMSS, a hash-based signature scheme that became the first international standard for post-quantum signature schemes in 2018. His work led to the establishment of ATHENE, described as Europe's largest IT security research center, and he received the Konrad Zuse Medal in 2017.