LGTM to experiment from 126 to 127 inclusive.
On 5/7/24 10:52 AM, Chris Fredrickson wrote:
Contact emails
johann...@chromium.org, cfred...@chromium.org, y...@chromium.org
Explainer
https://github.com/explainers-by-googlers/storage-access-for-fedcm
<https://github.com/explainers-by-googlers/storage-access-for-fedcm>
Specification
None (TBD)
Summary
Reconciles the FedCM and Storage Access APIs by making a prior FedCM
grant a valid reason to automatically approve a storage access request.
When a user grants permission for using their identity with a 3rd
party Identity Provider (IdP) on a Relying Party (RP), many IdPs
require third-party cookies to function correctly and securely. This
proposal aims to satisfy that requirement in a private and secure
manner by updating the Storage Access API (SAA) permission checks to
not only accept the permission grant that is given by a storage access
prompt, but also the permission grant that is given by a FedCM prompt.
A key property of this mechanism is limiting the grant to cases
explicitly allowed by the RP via the FedCM permissions policy,
enforcing a per-frame control for the RP and preventing passive
surveillance by the IdP beyond the capabilities that FedCM already
grants, as outlined in the Privacy Considerations
<https://github.com/explainers-by-googlers/storage-access-for-fedcm?tab=readme-ov-file#privacy-considerations>.
Blink component
Blink>StorageAccessAPI
TAG review
None
TAG review status
N/A
Risks
Interoperability and Compatibility
None
Gecko: No public signals, positive initial signals
<https://docs.google.com/document/d/1jxqW4kvGdclIWsOlWMXWLGpwu1wOorST2Ol6vJKAjDE/edit#heading=h.y0ecc5cfr86n>.
We will request a formal position.
WebKit: No signal. We will request a formal position.
Web developers: Positive <https://github.com/fedidcg/FedCM/issues/467>
Other signals:
WebView application risks
Does this intent deprecate or change behavior of existing APIs, such
that it has potentially high risk for Android WebView-based applications?
N/A, not shipping on Android WebView.
Goals for experimentation
Evaluate the implementation, and the usability of the feature to
ensure it adequately solves the problem.
Ongoing technical constraints
None
Debuggability
None
Will this feature be supported on all six Blink platforms (Windows,
Mac, Linux, ChromeOS, Android, and Android WebView)?
No. It will not be supported in Android WebView.
Is this feature fully tested by web-platform-tests?
No. The implementation is primarily in permissions code in //chrome,
which cannot be tested in WPTs since WPTs use a fake permission
manager
<https://crsrc.org/c/content/web_test/browser/web_test_permission_manager.h;drc=33b441e83b1f70381158fcafb0ecde9168b79524;l=28>in
Chromium.
Flag name on chrome://flags
#fedcm-with-storage-access-api
Finch feature name
FedCmWithStorageAccessAPI
Non-finch justification
None
Requires code in //chrome?
True
Estimated milestones
M126 through M127 (inclusive).
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5116478702747648
<https://chromestatus.com/feature/5116478702747648>
Links to previous Intent discussions
Intent to prototype:
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAD_OO4iogs7O60r0YcVnDB5aCvs9WUYjWFcuHqcFi5bXLRBOig%40mail.gmail.com
<https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAD_OO4iogs7O60r0YcVnDB5aCvs9WUYjWFcuHqcFi5bXLRBOig%40mail.gmail.com>
This intent message was generated by Chrome Platform Status.
--
You received this message because you are subscribed to the Google
Groups "blink-dev" group.
To unsubscribe from this group and stop receiving emails from it, send
an email to blink-dev+unsubscr...@chromium.org.
To view this discussion on the web visit
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/9a75fe74-ca55-4ddc-93d7-120adfdee49en%40chromium.org
<https://groups.google.com/a/chromium.org/d/msgid/blink-dev/9a75fe74-ca55-4ddc-93d7-120adfdee49en%40chromium.org?utm_medium=email&utm_source=footer>.
--
You received this message because you are subscribed to the Google Groups
"blink-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to blink-dev+unsubscr...@chromium.org.
To view this discussion on the web visit
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/e4cfab89-5510-4ce8-84f7-b7c4bbe071da%40chromium.org.
