000 00335nam a2200133Ia 4500
008 220201s2019 xx 000 0 eng d
082 _a005.82
_bSTA
100 _astallings, William
245 0 _aCryptography &Networking security
250 _a7th ed.
260 _adelhi
_bPearson Publications
_c2019
300 _a766
942 _2ddc
999 _c64452
_d64452