KAJIAN CRC32 UNTUK MENDETEKSI PERUBAHAN ISI FILE DOCUMENT

Abstract

Cyclic redundancy check 32 Bit or known by CRC32 is a technique used in data communication to check the
damage information sent or received between the sender and receiver are working at the data link layer on layer
of the Open Systems Interconnection (OSI) by comparing the checksum value frames are sent to the frame
received during transmission takes place. CRC32 techniques applied attempted to detect changes in a file that
may occur due to human vandal through virus attack. In this study CRC 32 is applied with the same technique,
namely by comparing the checksum of a file obtained from the registry system with the hash function of the
value of the checksum file to be compared. From the comparison of the checksums will be known whether a file
is changed or not, by trying to apply it to prove results on microsoft office document file and pdf