feat: add basic dag-jose jws and jwe fixtures

[rvagg]

Just basic JWS, and asymmetric and symmetric JWE blocks. Currently not working in Go, they don't round-trip properly:

--- FAIL: TestCodecs (0.02s)
    --- FAIL: TestCodecs/jwe-asymmetric (0.00s)
        codecs_test.go:48: [decode(dag-json)->encode(dag-jose)] generated CID (bagcqceraqfknq7xaemcihmq2albau32ttrutxnco7xeoik6mlejismmvw5zq) does not match expected (bagcqcera5kpstysqmmu5yvksmxg6ysp637ftwcff5z73xxa5uhunxgc3lznq)
    --- FAIL: TestCodecs/jwe-symmetric (0.00s)
        codecs_test.go:48: [decode(dag-cbor)->encode(dag-jose)] generated CID (bagcqceraxazmu67crshzqdeg3kwnfschs25epy5sbtqtjre2qw3d62kzplva) does not match expected (bagcqcerak7dgsag7xah7cnizkrywzkiebppa2ok26sfdlukg4o5slxvtuvja)
    --- FAIL: TestCodecs/jws (0.00s)
        codecs_test.go:48: [decode(dag-json)->encode(dag-jose)] generated CID (bagcqceraxvt5izt4sz7kjfrm42dxrutp6ijywgsacllkznzekmfojypkvfea) does not match expected (bagcqcera4mw52i4e522qxcvfl5kdtyopy76tyharfrnvaxhpth5yj2d6qzlq)

First guess is a map sorting issue. Used version of go-dag-jose here is probably relying on the go-ipld-prime dag-cbor that doesn't sort map keys consistently.

/cc @oed @warpfork

[smrz2001]

Hey @rvagg, I'm super close to getting my final go-dag-jose PR up and am testing with your new fixtures.

With bagcqceraxvt5izt4sz7kjfrm42dxrutp6ijywgsacllkznzekmfojypkvfea.dag-jose, for example, my hex editor shows me that the encoding is 0x71 (dag-cbor), which could be one of the reasons that the test is failing.

Am I missing something here?

Also, looks like the expected and generated CIDs are switched in the log 😅

[smrz2001]

You know what, scratch that @rvagg. I figured it out!

I was dumb and looking at the encoding of the link and payload fields, which obviously has nothing to do with the encoding of the parent structure.

[rvagg]

Sweet, good to hear we're getting close - btw I'm not claiming that these are the absolutely correct reference, but they are according to the current js-dag-jose. Perhaps you'll discover some problems that need to be fixed over there while you have your head in here. So while it'll be great to get to green here, correctness of the current fixtures isn't a given (yet).

Happy to take changes to this branch if you want to open a PR - additional fixtures or changes to what's in here.

[oed]

Afaik js-dag-jose should be correct according to the spec.