[PATCH] agent and scd: Don't prepend message digest

[NIIBE Yutaka]

On 2013-03-13 at 16:17 +0100, Werner Koch wrote:
> On Wed, 13 Mar 2013 02:05, gniibe at fsij.org said:
> 
> > I assume that the only client of SCDaemon is GPG-Agent of the same
> > version (or a bit old versions, but not all of past versions).  I
> 
> I might have agreed to it in the past, but we gpg 1.4 which needs to use
> gpg-agent/scdaemon for smartcard access because scdameon has exclusive
> access to the smartcard.  Thus gpg 1.4 uses "SCD foo" commands to
> communicate with scdameon.  Also for signing and decryption.
> 
> Scute and Poldi also use SCD commands.  A quick check however shows that
> they don't use "SCD" command for signing.  Thus this should not be a
> problem.

Thank you for pointing this out.  It was my near sight.  Now, I
understand that there are GPG 1.4 or other clients.

I will revise my work to keep its compatibility.
Sure, I will test with GPG 1.4 and Scute.  I don't have any experience
with Poldi, but I will examine its source code too.
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