This project is running in parallel with the cose-spec project. That project is defining the specification, while this project is providing some publicly available implementations of the COSE specification.
Fill in what the rules are - however it should be something along the lines of - all contributions are run under the GPL or MIT license
The initial version that is provided is wrtten in c#. There is also a JavaScript version that does a partial implementation using the new WebCrypto API.
The intention is to provide a set of test vectors that will and will not decode correctly for to allow implemetations to test themselves. Each of the provided implemetions will provide a test program which checks against the test vectors.