Closed Bug 1935280 Opened 6 months ago Closed 2 months ago

MacOS support for WebAuthn PRF extension

Categories

(Core :: DOM: Web Authentication, enhancement, P3)

Product:
Core
Component:
DOM: Web Authentication
Type:
enhancement

Tracking

()

Status:
RESOLVED FIXED
Milestone:
139 Branch
Tracking Flags:
Tracking Status
firefox139 --- fixed

People

(Reporter: jschanck, Assigned: jschanck)

References

(Blocks 2 open bugs)

Details

(Keywords: dev-doc-complete, webcompat:platform-bug)

User Story

platform-scheduled:2025-06-30

Attachments

(1 file)

Bug 1935280 - support WebAuthn PRF extension on macOS. r=keeler
48 bytes, text/x-phabricator-request
Details | Review

Requires MacOS 15.0+.

Depends on: 1945825
Blocks: 1923588
User Story: (updated)
Assignee: nobody → jschanck
Attachment #9478477 - Attachment description: WIP: Bug 1935280 - support WebAuthn PRF extension on macOS. r=keeler → Bug 1935280 - support WebAuthn PRF extension on macOS. r=keeler
Status: NEW → ASSIGNED
Pushed by jschanck@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/6b0c69999de2 support WebAuthn PRF extension on macOS. r=keeler

https://hg.mozilla.org/mozilla-central/rev/6b0c69999de2

Status: ASSIGNED → RESOLVED
Closed: 2 months ago
status-firefox139: --- → fixed
Resolution: --- → FIXED
Target Milestone: --- → 139 Branch
QA Whiteboard: [qa-triage-done-c140/b139]

FF139 MDN docs for this can be tracked as part of https://github.com/mdn/content/issues/39302

  1. Is this the extension described here: https://w3c.github.io/webauthn/#prf-extension
  2. This adds support for this extension on macOS. Is there support on other platforms too already? If so, can you point me to the relevant versions?
  3. Is there a wpl test I can run to find out what extensions a browser supports?
  4. Might you be able to review the docs when done. I propose to copy the structure for largeBlob in https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API/WebAuthn_extensions#largeblob
Flags: needinfo?(jschanck)

(In reply to Hamish Willee from comment #4)

FF139 MDN docs for this can be tracked as part of https://github.com/mdn/content/issues/39302

  1. Is this the extension described here: https://w3c.github.io/webauthn/#prf-extension

Yes

  1. This adds support for this extension on macOS. Is there support on other platforms too already? If so, can you point me to the relevant versions?

Support on Windows (Bug 1935278) and Linux (Bug 1935277) landed in Firefox 135. We don't support it on Android yet (Bug 1958716).

  1. Is there a wpl test I can run to find out what extensions a browser supports?

Not that I'm aware of.

  1. Might you be able to review the docs when done. I propose to copy the structure for largeBlob in https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API/WebAuthn_extensions#largeblob

Sounds good to me; I'd be happy to review the docs when they're done.

Flags: needinfo?(jschanck)
  1. Might you be able to review the docs when done. I propose to copy the structure for largeBlob in https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API/WebAuthn_extensions#largeblob

Sounds good to me; I'd be happy to review the docs when they're done.

Thanks very much!

I have done a draft in https://github.com/mdn/content/pull/39570 which has questions in line for you. I'll probably have to iterate afterwards.
The main one is whether it is possible to return multiple outputs in the get() case because it looks like you can supply multiple credentials, and hence presumably calculate the PRF differently in each case.

Flags: needinfo?(jschanck)
Flags: needinfo?(jschanck)
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