This paper presents an interesting application of the Tillich-Zfunction TZ. In particular, we emphasize the concatenation property of this one-way hash function, i.e. TZ(S j T) = TZ(S)TZ(T) where S and T are two binary strings. This property is combined with a multisignature scheme in a journalism context. The aim is to authenticate reports or interviews.
['Jean-Jacques Quisquater', 'Marc Joye']
Authentication of sequences with the SL 2 hash function: application to video sequences