DetectErrorCRC

The cyclic redundancy check (CRC)
A code error detection frequently used in digital networks and storage devices to detect accidental changes in the data. The blocks of data entered in these systems contains a verification value attached, based on the residue of a division of polynomials; the calculation is repeated, and corrective action can be taken against the allegedly corrupt data if the check value does not match. This code is a type of function that receives a data stream of any length as input and returns a value fixed length output. The term is often used to designate both the function and its result. They can be used as a checksum to detect alteration of data during transmission or storage. CRCs are popular because binary hardware implementation is simple, they are easy to analyze mathematically, and are particularly effective in detecting errors caused by noise in transmission channels. The CRC was invented and proposed by W. Wesley Peterson in an article published in 1961.

source Wikipedia.org

This application facilitates calculation