Re: [Acme] "authorized key pair" vs CSR keys

Martin Thomson <martin.thomson@gmail.com> Thu, 18 December 2014 19:55 UTC

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Date: Thu, 18 Dec 2014 11:55:13 -0800
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From: Martin Thomson <martin.thomson@gmail.com>
To: Anders Rundgren <anders.rundgren.net@gmail.com>
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Subject: Re: [Acme] "authorized key pair" vs CSR keys
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On 18 December 2014 at 04:12, Anders Rundgren
<anders.rundgren.net@gmail.com> wrote:
> Does/can the CSR use another key-pair than the "authorized key pair"?
>
> If not the outer signature seems a bit odd since the CSR itself should
> contain a signature.

The signature in the CSR isn't enough to bind the CSR to the ACME
protocol process.  Without that, the information that appears in the
ACME context couldn't be properly attributed to the private key owner.