Reed-Solomon error correction is a error-correcting technique, that works by adding error correction bits to a data block of a fixed size. It is able to both recover lost data, and correct errors, provided that the following inequality holds:
2*nbr_erasures + nbr_of_errors <= size_of_dictonary - message_size
This library is a re-implementation of the Python library unireedsolomon in Scala. Many thanks to Stephen Larroque and Andrew Brown for writing the original Python implementations.
This is still a work in process, and it is still lacking in documentation and performance, but all the basic concepts should be in place.
To try out the Reed-Solomon encoder, make sure you have sbt installed. Then compile the jar-files by running
sbt stage
You should now have now a set of run script under ./target/universal/stage/bin/. To try it out, take a file,
encode it and de-decode it with:
cat <your file>| ./target/universal/stage/bin/rs-encode | ./target/universal/stage/bin/rs-decode > <your file again>
Replace <your file> with appropriate values.