gpgv: Can't check signature: public key not found

[Kamaraju S Kusumanchi <raju.mailinglists@gmail.com>]

I am pretty sure this is a very trivial issue. But googling for the error 
returns lot of hits none of which I find useful.

I packaged a small program called lapack95. I uploaded the files to 
sourceforge website after signing them ( 
https://sourceforge.net/projects/sampleusage/files_beta/lapack95_deb/ ).
The files in 3.0-2 version are signed, files in 3.0-1 version are not.

I signed them using
$ debsign -k8D556DA9 lapack95_3.0-2_i386.change

However if I download the files back and do

$ dpkg-source -x lapack95_3.0-2.dsc                                                                                                                                                
gpgv: Signature made Tue 12 Oct 2010 10:01:24 PM EDT using DSA key ID 
8D556DA9
gpgv: Can't check signature: public key not found
dpkg-source: warning: failed to verify signature on ./lapack95_3.0-2.dsc
dpkg-source: info: extracting lapack95 in lapack95-3.0
dpkg-source: info: unpacking lapack95_3.0.orig.tar.gz
dpkg-source: info: unpacking lapack95_3.0-2.debian.tar.gz
dpkg-source: info: applying debian-changes-3.0-1


What should I do to make dpkg-source recognize my keys? Should I add them to 
somewhere?

thanks
raju
-- 
Kamaraju S Kusumanchi
http://malayamaarutham.blogspot.com/