These lecture notes were translated from the Finnish lecture notes for the TUT course ”Mate maattinen kryptologia” The laborious bulk translation was taken care of by the students Jussi Kangas visiting from the University of Tampere and Paul Coughlan visiting from the Univer sity of Dublin Trinity College I want to thank the translation team for their effort ">These lecture notes were translated from the Finnish lecture notes for the TUT course ”Mate maattinen kryptologia” The laborious bulk translation was ta ken care of by the students Jussi Kangas visiting from the University of Tampere and Paul Coughlan visiting from the Univer sity of Dublin [更多]