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FF139 Relnote: WebAuthn Extn largeBlob, credProps, prf #39572

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hamishwillee merged 2 commits into from
May 20, 2025
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FF139 Relnote: WebAuthn Extn largeBlob, credProps, prf #39572

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FF139 Relnote: WebAuthn Extn largeBlob, credProps, prf
hamishwillee May 19, 2025
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Update files/en-us/mozilla/firefox/releases/139/index.md
hamishwillee May 19, 2025
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3 changes: 3 additions & 0 deletions files/en-us/mozilla/firefox/releases/139/index.md
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Expand Up @@ -42,6 +42,9 @@ This article provides information about the changes in Firefox 139 that affect d
- The {{domxref("HTMLDialogElement/requestClose", "requestClose()")}} method of the {{domxref("HTMLDialogElement")}} interface is now supported.
This allows developers to conditionally prevent a dialog from closing by providing a [`cancel` event](/en-US/docs/Web/API/HTMLDialogElement/cancel_event) handler.
([Firefox bug 1960556](https://bugzil.la/1960556)).
- The [`largeBlob`](/en-US/docs/Web/API/Web_Authentication_API/WebAuthn_extensions#largeblob) and [`credProps`](/en-US/docs/Web/API/Web_Authentication_API/WebAuthn_extensions#credprops) Web Authentication extensions are now supported, while the [`prf`](/en-US/docs/Web/API/Web_Authentication_API/WebAuthn_extensions#prf) extension is supported on all desktop platforms.
These respectively provide support for large blob storage associated with a credential, additional information about a credential, and a mechanism for generating a random number associated with a credential and a particular input.
([Firefox bug 1795020](https://bugzil.la/1795020), [Firefox bug 1844449](https://bugzil.la/1844449), [Firefox bug 1935280](https://bugzil.la/1935280)).

#### Media, WebRTC, and Web Audio

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