Cryptology ePrint Archive: Report 2004/297

Post-Quantum Signatures

Johannes Buchmann and Carlos Coronado and Martin Döring and Daniela Engelbert and Christoph Ludwig and Raphael Overbeck and Arthur Schmidt and Ulrich Vollmer and Ralf-Philipp Weinmann

Abstract: Digital signatures have become a key technology for making the Internet and other IT infrastructures secure. But in 1994 Peter Shor showed that quantum computers can break all digital signature schemes that are used today and in 2001 Chuang and his coworkers implemented Shor s algorithm for the first time on a 7-qubit NMR quantum computer. This paper studies the question: What kind of digital signature algorithms are still secure in the age of quantum computers?

Category / Keywords: public-key cryptography / digital signatures, quantum computation

Date: received 10 Nov 2004

Contact author: uvollmer at cdc informatik tu-darmstadt de

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Version: 20041112:152718 (All versions of this report)

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