libpar2 (file corruption detection library for C++) libpar2 allows for the generation, modification, verification of PAR v1.0 and PAR v2.0(PAR2) sets used for recovery when data is lost or corrupted. When used with collections of files, some missing files can be regenerated. The code was initially extracted from the program par2cmdline (also available at SlackBuilds) to allow developers to use it. libpar2 requires the libsigc++ library which is also available from SlackBuilds.org.