Checksum: Difference between revisions

17 bytes removed ,  3 years ago
m
Reverted 1 edit by 199.67.138.43 (talk) to last revision by Canterbury Tail. (TW)
(reliable test)
m (Reverted 1 edit by 199.67.138.43 (talk) to last revision by Canterbury Tail. (TW))
{{Refimprove|date=August 2012}}
[[File:Checksum.svg|thumb|330px|right|Effect of a typical checksum function (the Unix <tt>[[cksum]]</tt> utility)]]
Hello Jimmy!!!!
 
 
A '''checksum''' is a small-sized [[datum]] derived from a block of [[digital data]] for the purpose of [[error detection|detecting errors]] which may have been introduced during its [[telecommunication|transmission]] or [[computer storage|storage]]. It is usually applied to an installation file after it is received from the download server. By themselves, checksums are often used to verify data integrity but are not relied upon to verify data [[authentication|authenticity]].