Enrichen registration and authentication ceremonies definitions

[emlun]

Fixes #1099, although not entirely in line with the prompt:

e.g., add links to the registration and authentication ceremonies definitions pointing to:

• [[WebAuthnAPIGuide]] (ie: https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API)
• https://w3c.github.io/webauthn/#sctn-use-cases
• https://w3c.github.io/webauthn/#sctn-sample-scenarios
• https://w3c.github.io/webauthn/#sctn-api (introduction)

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[equalsJeffH]

Hey, thanks @emlun, this is a good start. Though, I don't think we ought to be pointing down into the [[#sctn-createCredential]] and [[#sctn-discover-from-external-source]] browser algs at this level of abstraction. I suggest instead pointing at WebAuthn RP Ops, and the two subsections (registration and authn) there.

Once we land PR #1300, we can perhaps add Notes to the first steps (say) of Registering a New Cred and Verifying an Authn Assn pointing back up to the new-and-improved Use Cases section with its discussion of which options settings to use to manifest which use cases.

what do you think?

[emlun]

Hey, thanks @emlun, this is a good start. Though, I don't think we ought to be pointing down into the [[#sctn-createCredential]] and [[#sctn-discover-from-external-source]] browser algs at this level of abstraction. I suggest instead pointing at WebAuthn RP Ops, and the two subsections (registration and authn) there.

Good points, thanks!

Once we land PR #1300, we can perhaps add Notes to the first steps (say) of Registering a New Cred and Verifying an Authn Assn pointing back up to the new-and-improved Use Cases section with its discussion of which options settings to use to manifest which use cases.

Sounds good! Let's put this one on hold for now, then.

[emlun]

@equalsJeffH Since #1300 was scrapped, do we also scrap your second paragraph? First paragraph is fixed now.

[equalsJeffH]

LGTM, thx @emlun!