000			00422nam a2200145Ia 4500
008			140104s9999 xx 000 0 und d
020			_a9788131761663
082			_a005.82 STA-C5
100			_aStallings, William
245			_aCryptography and network security : Principles and practice / _c William Stallings
250			_a5th ed.
260			_bPearson Education, _aNew Delhi : _c2011.
942			_cBK
999			_c22579 _d22579