microg / microg/GmsCore

Feature request: Support for hmac-secret FIDO2 extension

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🔐 FIDO / WebAuthN / Passkeys enhancement
Dominant language
Java
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Avg merge
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Description

Please add support for hmac-secret FIDO2 extension.
Info: https://fidoalliance.org/specs/fido-v2.0-rd-20180702/fido-client-to-authenticator-protocol-v2.0-rd-20180702.html#sctn-hmac-secret-extension

This allow password manager apps to use it.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Read the linked FIDO2 hmac-secret extension specification first and determine where GmsCore handles FIDO2 authenticator extensions. The issue names no files, tests, or entry points, so locating the relevant Android authentication implementation and defining coverage for password manager apps are part of the initial research. Done means the extension is supported according to the specification and its behavior is verified.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, java
Domain
authentication, mobile, security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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