000			00513 a2200181 4500
999			_c11261 _d11261
003			NUST
020			_a9788131761663
038			_aZafar
082			_a005.8
100			_aStallings, William _9220
245			_aCryptography and network security : principles and practice _cWilliam Stallings
250			_a5th ed.
260			_aNew Delhi _bPearson education _c2011
300			_a743 p.
650			_aComputer networks--Security measures _914496
700			_aWilliam Stallings _9669
942			_cBK _k005.8 STA _2ddc