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A numerical value calculated from a series of bits of digital data, often by summing their values, used to test whether the data has changed during storage or transmission.

check′sum′ v.


a digit representing the number of bits of information transmitted, attached to the end of a message in order to verify the integrity of data
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.checksum - a digit representing the sum of the digits in an instance of digital data; used to check whether errors have occurred in transmission or storage
confirmation, substantiation, verification, check - additional proof that something that was believed (some fact or hypothesis or theory) is correct; "fossils provided further confirmation of the evolutionary theory"
References in periodicals archive ?
Library of Congress' Bagger transfer tool and HashX (from BoilingBit Software) for creating and verifying checksums
With support for the next-generation Btrfs file system, RS2416+/RS2416RP+ offers metadata mirroring and checksums that guarantee a higher level of data availability and survivability.
Finally, the whole system is analyzed in action, including extensions, client- and server-side compromises, day-to-day operations and the use of proxies and checksums.
Reliable data integrity is ensured by using checksums and acknowledgments and avoiding interference through its advanced hybrid frequency hopping scheme.
If the number of bytes received is equal with the one requested and if the two checksums are equal, then the communication has ended without any errors and a new reading can be initiated.
Checksums can be computed and compared to assure that a file is not modified.
Checksums/Cyclical redundancy check (CRC): Checksums are often used in file transfer to verify that the data transfer was successful.
Designed to support econometrics, the FDIC's electronic filing system puts out the cleanest (all the derived calculations and checksums loot) and most immediately useful bulk financial data in the world, far exceeding anything available from any commercial data vendor.
The data path demands of a storage system are additionally taxed by the demands of RAID parity generation for RAID-5 and RAID-6, and by computing data integrity checksums.
The software program lets users analyze source code, correct checksums, repair damaged resources, and modify the internal arrangement of PE files.
Red Hat, Caldera, Sun, IBM and SCO have since posted software fixes and checksums.