00353nam a2200121Ia 450000500170000000800410001702000210005805000170007910000210009624500640011726000270018165000230020820251229175609.0251229s9999    xx            000 0 und d  a978 1107 60345 5  aQA 76.9 .K64  aKlein Philip, N. 2aA cryptography primer, secrets and promisescN Klein Philip  aNew Yorkb C.U.Pc2014  aComputer  Security