00313nam a2200145Ia 4500100001800000650002100018250000600039366000700045654002100052245003800073260002200111082001400133300000800147546001200155  aForouzan/B.A   aNetwork Security  a3  f20  anetwork security  aCryptography and network security  bMcGraw Hillc2015  a5.82bFOR  a673  aENGLISH