Publick-key cryptography using error-correcting codes


Meeting Time: Sept. 21, 2010, 2:00-2:50pm

Abstract: Until modern times, all cryptographic systems shared a limitation: Secure communication across an insecure channel required that communicating parties first share a key to the system via a secure channel. In 1976, Diffie and Hellman introduced the idea of a public-key cryptographic system (PKC), a system that eliminated the need for a secure channel by having separate encryption and decryption keys. Within a couple of years, McEliece developed a PKC that used error-correcting codes and the difficulty of general linear decoding to achieve a secure system. In this talk we'll discuss McEliece's PKC and its derivatives.