checksum
Sign in to savethumb|330px|right|Effect of a typical checksum function (the Unix cksum utility)
Article
10 sectionsContents
- Algorithms
- Parity byte or parity word
- Sum complement
- Position-dependent
- {{anchor|fuzzy checksum}}Fuzzy checksum
- General considerations
- See also
- References
- Further reading
- External links
thumb|330px|right|Effect of a typical checksum function (the Unix cksum utility)
A checksum is a small-sized block of data derived from another block of digital data for the purpose of detecting errors that may have been introduced during its transmission or storage. By themselves, checksums are often used to verify data integrity but are not relied upon to verify data authenticity.