Intent to Prototype: WebRequest.SecurityInfo in Controlled Frame

[Chromestatus]

Contact emails

vk...@google.com

Explainer

https://github.com/explainers-by-googlers/security-info-web-request

Specification

No information provided

Summary

This proposal introduces a WebRequest.SecurityInfo API for ControlledFrame. It allows a web app to intercept an HTTPS, WSS or WebTransport request to a server, retrieve the server's certificate fingerprint (as verified by the browser), and then use that fingerprint to manually verify the certificate of a separate raw TCP/UDP connection to the same server. This provides a simple way for the app to confirm it's talking to the correct server.

Blink component

Blink

Web Feature ID

Missing feature

Motivation

Web apps sometimes need to establish secure raw TCP/UDP connections (e.g., via Direct Sockets) for custom protocols, often to support legacy servers that cannot be updated to modern alternatives like WebTransport. Unlike standard HTTPS, these raw sockets don't have a built-in mechanism to verify the server's TLS certificate against a trusted root store. This proposal introduces a WebRequest SecurityInfo API for ControlledFrame. It allows a web app to intercept an HTTPS, WSS or WebTransport request to a server, retrieve the server's certificate fingerprint (as verified by the browser), and then use that fingerprint to manually verify the certificate of a separate raw TCP/UDP connection to the same server. This provides a simple way for the app to confirm it's talking to the correct server.

Initial public proposal

https://github.com/WICG/proposals/issues/245

Requires code in //chrome?

True

Tracking bug

https://g-issues.chromium.org/issues/462114142

Launch bug

https://launch.corp.google.com/launch/4436388

Estimated milestones

No milestones specified

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5076692209106944?gate=5114761792585728

This intent message was generated by Chrome Platform Status.