cert-digest-algo clarification

[Sam Smith]

The "setpref" and "showpref" commands appear to only relate to what is stipulated with the "default-preference-list".

Setpref just resorts back to the "default" settings if "default-preference-list" is not given. So if one sets "default-preference-list" it's not necessary to set "personal-digest-preferences", right? I mean how are "personal-digest-preferences" even seen by others if SETPREF does not embed them in the key?



From: mailinglisten at hauke-laging.de
To: gnupg-users at gnupg.org
Subject: Re: cert-digest-algo clarification
Date: Thu, 12 Jul 2012 17:58:20 +0200

Am Do 12.07.2012, 11:39:44 schrieb Sam Smith:
> It's overriding the recipient key preferences.
 
And sets the value for non-encrypted signatures.
 
 
> So "default-preference-list" is embedded into the public key
 
Into new keys. Existing keys need --edit-key 0x... setpref...
 
 
> to tell others
> your preferences. But if I set a string for "personal-digest-preferences"
> then this string will override the "default-preference-list" that the other
> user set in his public key?
 
Yes. Overrides the order (but cannot make missing elements available).
 
 
> Say I want to tell everyone, "Hey, I prefer you use SHA256 when
> communicating with me." What command should I use to communicate this?
> "default-preference-list" right?
 
As you wrote: This information is (or rather can be) embedded in a key. Either 
by default-preference-list being defined at the creation time of the key or by 
--edit-key setpref.
 
Have you read the documentation about --default-preference-list?
 
--default-preference-list string
Set the list of default preferences to string. This preference list is used 
for new keys and becomes the default for "setpref" in the edit menu.
 
I don't find that unclear.
 
 
> So "personal-digest-preferences" overrides this?
 
The personal-digest-preferences setting in the configuration of *other* users 
may override the setting you may have made in your key. Your personal-digest-
preferences setting is irrelevant for the signatures of others.
 
 
You should read the documentation for the commands showpref and setpref, try 
them (in combination with --default-preference-list) and see what happens.
 
 
Hauke
-- 
PGP: D44C 6A5B 71B0 427C CED3 025C BD7D 6D27 ECCB 5814

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