Forum Discussion

Hiroyuki's avatar
Hiroyuki
New Contributor
7 months ago

Issues with PublicKeyCredential: toJSON() and passkeys

We are developing a SaaS service with passkey support.
When we tested passkey functionality with 1Password across various browsers, we found that it is completely broken.
Does 1Password offer any support for SaaS developers integrating passkeys?

The specific issues are as follows:

Chrome Extension

When using 1Password as the authenticator, calling PublicKeyCredential: toJSON() to convert the authenticatorResponse into JSON for sending to the server results in an error, as this method no longer works.

Firefox Extension

When using 1Password as the authenticator, PublicKeyCredential: toJSON() can be executed to convert the authenticatorResponse into JSON, but the result ignores ArrayBuffer, causing attestationObject, clientDataJSON, etc., to be blank.

browser extension
passkeys

5 Replies

  • jtruba's avatar
    jtruba
    New Contributor
    12 days ago

    I've opened a support case VLR-95342-737 about this as well: the browser extension consistently breaks `toJSON` across multiple browsers.

    In Chrome, `PublicKeyCredential#toJSON()` and `JSON.stringify(PublicKeyCredential)` both result in "TypeError: Illegal invocation".

    In FireFox, `PublicKeyCredential#toJSON()` gets "TypeError: result.toJSON is not a function", while `JSON.stringify(...)` results in ArrayBuffer members being serialized incorrectly.

    This all goes away if the extension is disabled.

  • rentectravis's avatar
    rentectravis
    New Contributor
    21 days ago

    I also am encountering this problem. I emailed mailto:support@1password.com with the info requested. Support ticket ID: PGH-46889-373.

    Crazy that in 2026 web developers still have to use a polyfill https://github.com/github/webauthn-json/tree/main

  • 1P_Dave's avatar
    1P_Dave
    Icon for Moderator rankModerator
    7 months ago

    Hello Hiroyuki​! 👋

    I'm sorry that 1Password is running into issues with passkey functionality in certain circumstances. It sounds like you're running into a known issue that the team has noted on at least one other website. So that we can gather more information from your end, can you reproduce the issue again and send in a diagnostics report:

    Send a diagnostics report (browser extension)

    Attach the diagnostics to an email message addressed to support@1password.com

    With your email please include:

    • A link to this thread: https://www.1password.community/discussions/1password/issues-with-publickeycredential-tojson-and-passkeys/158327
    • Your forum username: hiroyuki
    • The website address of the affected webpage. 


    You should receive an automated reply from our BitBot assistant with a Support ID number.  Please post that number here.  Thanks very much!

    -Dave

    #33167

    • langalex's avatar
      langalex
      New Contributor
      1 month ago

      We are running into the same/a similar issue. On Firefox, PublicKeyCredential#toJSON does not exist. When calling `JSON.stringify(credential)` without calling `toJSON()`. the attestationObject, clientDataJSON, etc are blank as described above.

      • 1P_Dave's avatar
        1P_Dave
        Icon for Moderator rankModerator
        26 days ago

        langalex​ 

        I'm sorry that you're being affected by the same issue. Can you share the address of the website where you're running into the issue so that I can pass that along to our development team?

        -Dave

        Issue=FS-233