Boolean functions for symmetric cryptography

Abstract

Boolean functions are used as one component in the design of symmetric ciphers, e.g. the Sbox in AES, or the filtering function in stream ciphers. In order to resist various attacks, such functions must satisfy certain properties, such as having high algebraic degree and high nonlinearity. Moreover, these properties should not degrade significantly when the function is restricted to a subspace of its domain. I will be presenting my research in this area published over the last few years.

Speaker

Professor Ana Salagean, Computer Science Department, Loughborough University.