00339nam a2200133Ia 4500008004100000035000800041082001100049100002400060245003800084260003700122300000800159500001300167700002500180211026s9999||||xx |||||||||||||| ||und||  a371  a005.82  aBehrouz A. Forouzan 0aCryptography and Network Security  bTata McGraw Hill Educationc2019  a674  aIN-14970  aDebdeep Mukhopadhyay