LibCRC is an open source library in C to calculate various checksums of byte streams. The repository of LibCRC is stored at Github. You can either clone or fork the repository and use it in your own development environment to build the library, or download a zip or tar archive file containing the full source tree. The following archives are currently available for download:
Version 2.0 Source Files
Version 2.0 of the LibCRC library was released on Nov. 27 2016. This version of the library in ZIP, tar ball and GIT formats can be downloaded from the following links.
Source tree in ZIP format: libcrc-2.0.zip
Source tree in TAR format: libcrc-2.0.tar.gz
Source tree on Github: github.com/lammertb/libcrc/tree/v2.0