000 00270nam a22001217a 4500
082 _a600.
100 _aWILLIAM STALLINGS
245 _aCRYPTOGRAPHY & NETWORK SECURITY
250 _a8 th
260 _aN.DELHI
_bPEARSON
_c2025
300 _a832 PAGES
942 _2ddc
_cBK
999 _c13793
_d13793