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I would like to suggest that we change XEP-0027 from Active to
Deprecated (and then Obsolete). The technology is no longer in wide
use, and it has so many problems that I don't think we want to
actively suggest that people implement it.

Peter


- -------- Original Message --------
Subject: Re: [cryptography] Is it just me or is this fundamentally broken?
Date: Mon, 04 Mar 2013 18:24:46 -0700
From: Peter Saint-Andre <[email protected]>
To: Peter Gutmann <[email protected]>
CC: [email protected]

On 3/4/13 4:42 PM, Peter Gutmann wrote:
> Quoting http://xmpp.org/extensions/xep-0027.html#signing:
> 
> Signing enables a sender to verify that they sent a certain block 
> of text. [...] The text that is signed MAY be the empty string.
> 
> (There's no metadata or anything there, just a raw signature).

No one uses XEP-0027 these days, they all use OTR. The PGP integration
with XMPP clients was an early experiment in the Jabber community
before we even called it XMPP. Think 13+ years ago. But clients never
signed empty strings, although we never fixed the spec because no one
was using the technology. I'll push to make the spec Obsolete.

Peter

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