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Re: Web Keys and HTTP Signatures

"David I. Lehn" <dil@lehn.org> Wed, 17 April 2013 23:14 UTC

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Date: Wed, 17 Apr 2013 19:13:24 -0400
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From: "David I. Lehn" <dil@lehn.org>
To: Carsten Bormann <cabo@tzi.org>
Cc: Manu Sporny <msporny@digitalbazaar.com>, Web Payments CG <public-webpayments@w3.org>, ietf-http-wg@w3.org
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Subject: Re: Web Keys and HTTP Signatures
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On Wed, Apr 17, 2013 at 6:03 PM, Carsten Bormann <cabo@tzi.org> wrote:
> On Apr 17, 2013, at 23:32, Manu Sporny <msporny@digitalbazaar.com> wrote:
>
>> https://github.com/joyent/node-http-signature/blob/master/http_signing.md
>
> I looked at this for about 5 seconds, but are you telling us the attacker gets to choose what the lines in the signed string are supposed to mean?
>

I'm not sure I understand your question? The request signature
specifies the headers that are signed. The server can reject a request
based on a header requirement policy. Our current implementation
requires the headers to at least include request-line, host, and date.
What specific attack did you have in mind?

-dave

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