On Sep 17, 2008, at 5:21 PM, Faramir wrote:

I have modified my preferences in gpg.conf, but my key was generated
before making those changes... when I use showpref command, the cypher
algorithms are shown in the right order according to gpg.conf, but the
digest order is not in the right order... how can I make my keys to show
my preferred algos and how to check they are in the right order?

You say you modified your preferences in gpg.conf - how? There are a few things regarding preferences in gpg.conf, but few of them impact showpref.

Showpref shows what the preferences are on the key itself. These are the preferences that other users who are encrypting to you will use for you. Obviously, your gpg.conf cannot be consulted by the other users :)

If you want to alter the list of preferences on your key, do this:

 gpg --edit-key (thekey)
 setpref aes256 sha512 bzip2 blah blah blah
 save

Put the algorithms you like best first in the list, and you can freely mix cipher, hash, and compression algorithms. You can also use "mdc", "no-mdc", "ks-modify", and "no-ks-modify" to enable and disable the MDC and keyserver modify flags. MDC defaults to on, ks-modify defaults to off (i.e. don't allow modification).

Note that you can specify a different set of preferences for each user ID. This is a handy feature, as it lets you express things like "I want to use AES256 for home stuff, but my work address requires 3DES by policy".

David


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