Description
An error-detecting block code that appends a message with a string, called a checksum, that depends in some way on the message.Protection
The checksum can be calculated from the message via a formula and verified against the appended checksum in order to flag certain misread messages.Member of code lists
Primary Hierarchy
Parents
Checksum code
Children
The \(q\)-ary parity check code is a simple example of a checksum code, with the parity of the message being the checksum.
The last digit of a particular ISBN is a check digit that is evaluated modulo 11 [1].
References
- [1]
- R. Hill. A First Course In Coding Theory. Oxford University Press, 1988.
Page edit log
- Victor V. Albert (2025-11-17) — most recent
Cite as:
“Checksum code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2025. https://errorcorrectionzoo.org/c/checksum