How to validate a certificate from JS/TS

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So a couple things I figured out after poking around:

  1. In case it wasn’t obvious, if you have no NNS subnet then your canister will write a certificate with it’s subnet pub key as the rootKey. (root_key for searchers).

  2. Also the pic.getPubKey just returned an array and the verification library needs a byte buffer or it fails due to checking byteLength instead of length.

let nnspubkey = new Uint8Array(await pic.getPubKey(subnet.id));
  1. I had hell getting the npm package to work with my jest and typescript set up so I just rawdogged the ts files from the verification project into mine and then futzed around until I exported validateTree which seemed to get me what I wanted.

And now my test passes. :rocket:

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