On Fri, 04 Feb 2011 08:24:38 -0400, David Bremner <bremner@unb.ca> wrote:
> On Wed, 02 Feb 2011 17:18:45 -0800, Jameson Rollins <jrollins@finestructure.net> wrote:
> > Hi, all.  I have pushed a new branch called "crypto" to my notmuch
> > repository [0].  This branch provides full support for PGP/MIME signed
> > and encrypted messages, including emacs UI support.  It has been applied
> > on top of cworth's current master (21e97c50).  It includes the
> > following:
> > 
> 
> For a signed and encrypted message, if the signing key can't be found,
> one just gets:
> 
>  [ multipart/encrypted: decryption error ]
> 
> which is a bit mystifying.  At least gpg on the command line will
> decrypt the message and print a warning about the signature.

So I need to look at this closer, but I think this is a GMime problem.
That error message is generated when the GMime decryption code returns
NULL for the decrypted part.  I'll try to make a test case for this, and
file a bug with GMime upstream.

jamie.