Re: --edit-key Information

2009-12-14 Thread Daniel Kahn Gillmor 
On 12/14/2009 11:26 AM, Werner Koch wrote:
> On Mon, 14 Dec 2009 09:46:44 -0500 (EST), Gary Hanley wrote:
> 
>> Where do I find information about the "D" in "1024D" and the "g" in 
>> "4096g"? What are the other potential values?
> 
> In the source ;-). gnupg/g10/keyid.c:

maybe this info could go in DETAILS as well?

>> And although the answer may be obvious or intuitive, is there a source 
>> of information that describes the values of the "usage:" flags?
> 
> I am not sure whether it is explicitly documented.  In
> gnupg/doc/DETAILS you can find the assignments we have:
> 
> 12. Field:  Key capabilities:
> e = encrypt
> s = sign
> c = certify
> a = authentication

If you're curious about what these words themselves mean in the context
of OpenPGP, you might be interested in the relevant section of the
OpenPGP RFC:

 http://tools.ietf.org/html/rfc4880#section-5.2.3.21

hth,

--dkg



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Re: --edit-key Information

2009-12-14 Thread Werner Koch 
On Mon, 14 Dec 2009 09:46:44 -0500 (EST), Gary Hanley wrote:

> Where do I find information about the "D" in "1024D" and the "g" in 
> "4096g"? What are the other potential values?

In the source ;-). gnupg/g10/keyid.c:

  int
  pubkey_letter( int algo )
  {
  switch( algo ) {
case PUBKEY_ALGO_RSA:   return 'R' ;
case PUBKEY_ALGO_RSA_E: return 'r' ;
case PUBKEY_ALGO_RSA_S: return 's' ;
case PUBKEY_ALGO_ELGAMAL_E: return 'g';
case PUBKEY_ALGO_ELGAMAL: return 'G' ;
case PUBKEY_ALGO_DSA:   return 'D' ;
default: return '?';
  }
  }
  
'G' is not anymore supported; it was used for sign+encrypt Elgamal.
'r' and 's' are also not used for new keys - they have been used in
the past by a PGP variant.

> And although the answer may be obvious or intuitive, is there a source 
> of information that describes the values of the "usage:" flags?

I am not sure whether it is explicitly documented.  In
gnupg/doc/DETAILS you can find the assignments we have:

12. Field:  Key capabilities:
e = encrypt
s = sign
c = certify
a = authentication
A key may have any combination of them in any order.  In
addition to these letters, the primary key has uppercase
versions of the letters to denote the _usable_
capabilities of the entire key, and a potential letter 'D'
to indicate a disabled key.


Shalom-Salam,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.


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--edit-key Information

2009-12-14 Thread Gary Hanley 

Hello,

Try as I might I can't seem to find any solid information regarding 
some information under --edit-key. Consider this slightly redacted 
example:


pub 1024D/92323698 : 2009-12-11 expires: 2011-12-11 usage: SCA
 trust: ultimate validity: ultimate
sub 4096g/746E2A67 : 2009-12-11 expires: 2011-12-11 usage: E

Where do I find information about the "D" in "1024D" and the "g" in 
"4096g"? What are the other potential values?


And although the answer may be obvious or intuitive, is there a source 
of information that describes the values of the "usage:" flags?


Thanks for any help you can give me.

-- Gary

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