00269nam a2200109Ia 4500008004100000041000800041082001500049100002400064245003900088260002500127365000700152230303s9999    xx            000 0 und d  aeng  a005.82 STI  aSTINSON (Douglas.R)  aCryptography : Theory and Practice  aCRC PressbBocaRatan  cRS