Added rfc7539-section-242 test

[seanybaggins]

Not 100% sure if the test was put in the correct location. Comments welcome.

[tarcieri]

Hmm, I'm not sure if these are the same vectors that are already in the (sadly opaque) chacha20.blb file.

Unfortunately there's not good tooling for inspecting those files.

Looking at a dump in xxd, possibly not?

[seanybaggins]

I fail to see the text vectors using hexdump and grepping for the first 2 bytes of the plain text.

hexdump -x chacha20.blb | awk '{$1=""}1' | tr -d " \t\n\r" | rg 4c61

[tarcieri]

Curious how the RFC7539 vectors compare to the RFC8439 test vectors: https://datatracker.ietf.org/doc/html/rfc8439#appendix-A

I can look a bit more in depth later.

[seanybaggins]

So I have looked into the differences between rfc7539 and rfc8439. It looks that these two tests are exactly the same. I will change the name of the test to reflect the more up to date rfc.

[tarcieri]

As it were, someone else opened #245 to add the RFC 8439 test vectors 😅

Now I need to go through the .blb file and reconcile which vectors are already in there and which ones were missing, as at least upon first glance there are some missing but they're very hard to inspect and have no comments.

[tarcieri]

Closing in favor of #245 which uses the RFC 8439 test vectors.