CODEWITHSUNDEEP
google-chromegoogle-chrome-extensionhttpsconnection
Pierre Prinetti
Pierre Prinetti

Reputation: 9632

Can a Chrome extension get information about a connection?

I want my Chrome extension to collect information about how the current browser tab negotiated its secure connection.

In particular, I want to know the protocol and the cypher/auth & key exchange mechanisms used in the HTTPS connection: SSL3? TLS 1.2? And those ugly strings like AES_128_GCM or CHACHA20_POLY1305, ECDHE_RSA or ECDHE_ECDSA.

Is this even possibile?

Within the API index, the best fitting module seems to be chrome.webRequest. But I can't see any means to gather connection data. Am I missing something?

Upvotes: 1

Views: 332

Answers (1)

Rob W
Rob W

Reputation: 349042

You cannot get any information about the TLS connection via the Chrome extension APIs. A few days ago, a popular feature request on Chromium's issue tracker was marked as WontFix because of the complexity of implementing such a feature in Chrome (Issue 107793: Provide information about the TLS connections to extensions via the webRequest API).

The only way to get the certificate information in Chrome is by clicking on the lock icon, then the Connection tab.

Upvotes: 2

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