W3C home > Mailing lists > Public > public-webappsec@w3.org > February 2013

RE: CSP script hashes

From: =JeffH <Jeff.Hodges@KingsMountain.com>
Date: Tue, 12 Feb 2013 14:56:23 -0800
Message-ID: <511AC897.6000500@KingsMountain.com>
To: W3C Web App Security WG <public-webappsec@w3.org>
>> what is the rationale for preventing this beyond difficulty of
>> implementation?
> [Hill, Brad] I'm always the first one to invoke the priority of
> constituencies, but I think there's a real sense in which difficulty of
> implementation is the only interesting problem here, and directly related to
> the use-case goals of the feature.
> How do we create a canonical set of bytes to represent script content inline
> in an HTML document that is unambiguous and yet not brittle across multiple
> implementations and (importantly) future implementations?
> We're taking dependencies on a core and complex part of HTML here.   We
> should expect HTML to continue to evolve, and for the pressures on it to be
> stronger than any back-pressure we can put it on behalf of script-hash.
> If we design something that is brittle, constrictive or otherwise problematic
> in the face of the evolution of core document parsing, we should expect
> script-nonce will fail and get left behind.

Received on Tuesday, 12 February 2013 22:56:49 UTC

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