00393nam a2200133Ia 450000500170000000800410001702000180005808200180007610000210009424500680011526000280018330000100021165000380022120260206062026.0260121s9999 xx 000 0 und d a9781292437484 a005.8 bSTA-C aWillum stallings 0aCryptography and Network Security: Principle and Practice 8th e bPearson Educationc2023 a832 p aComputer Science & General works