par2

Pure-Go (CGO-free) parser, verifier and repairer for PAR2 recovery sets — the format behind the AutoPAR feature that protects Usenet binaries. Parse concatenated .par2 blobs into a RecoverySet (validating each packet's MD5), verify files with the per-slice MD5+CRC32 checksums, and repair damaged slices via Reed-Solomon over GF(2^16). The Galois-field core is reused from go-erasure/reedsolomon.

Install

go get github.com/go-newsgroups/par2

Requires Go 1.26.4 or newer. CGO_ENABLED=0.

Links

• Source: https://github.com/go-newsgroups/par2
• API reference: https://pkg.go.dev/github.com/go-newsgroups/par2

Note

See the module's README for full, up-to-date details.