[[meta title="Modified GnuTLS 2.4.x available"]]
+-----
+
+**2008-10-25 UPDATE:** [GnuTLS 2.6 has been released, and it contains the
+functionality we needed](/news/gnutls-2.6-enables-monkeysphere).
+Please upgrade to GnuTLS 2.6 if you need Monkeysphere to deal with
+passphrase-protected authentication subkeys. The information on this
+page is now of historical interest only.
+
+-----
+
The MonkeySphere project is now making available a patched version of
[GnuTLS](http://gnutls.org/) version 2.4.x, which enhances the utility
of the `monkeysphere` package by enabling it to read authentication
You can track this package in debian lenny by adding the following
lines to `/etc/apt/sources.list`:
- deb http://monkeysphere.info/debian experimental gnutls
- deb-src http://monkeysphere.info/debian experimental gnutls
+ deb http://archive.monkeysphere.info/debian experimental gnutls
+ deb-src http://archive.monkeysphere.info/debian experimental gnutls
Or you can patch and build the packages yourself with the patches and
scripts provided in [the MonkeySphere git repo](/download).
of the secret key material. This is used by GnuPG on the primary key
when the `--export-secret-subkeys` argument is given.
-You can read notes about the GNU S2K extensions in DETAILS from GnuPG,
-which you can fetch this way:
+GnuPG's [DETAILS
+file](http://cvs.gnupg.org/cgi-bin/viewcvs.cgi/trunk/doc/DETAILS?root=GnuPG)
+describes this extension this way:
+
+ GNU extensions to the S2K algorithm
+ ===================================
+ S2K mode 101 is used to identify these extensions.
+ After the hash algorithm the 3 bytes "GNU" are used to make
+ clear that these are extensions for GNU, the next bytes gives the
+ GNU protection mode - 1000. Defined modes are:
+ 1001 - do not store the secret part at all
+ 1002 - a stub to access smartcards (not used in 1.2.x)
+
+And [`gpg(1)`](http://linux.die.net/man/1/gpg) says of `--export-secret-subkeys`:
- svn co svn://cvs.gnupg.org/gnupg/trunk/doc
- less doc/DETAILS
+ [This] command has the special property to render the secret
+ part of the primary key useless; this is a GNU extension to
+ OpenPGP and other implementations can not be expected to
+ successfully import such a key.
+
A version of this patch was first proposed [on
`gnutls-dev`](http://lists.gnu.org/archive/html/gnutls-devel/2008-08/msg00005.html),
and looks like it will be adopted upstream in the GnuTLS 2.6.x series,