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In the above case i tried to install rpms key.

You cannot check signatures without installing first the rpmkeys. Install them with:

apt-get -o gpg::check=false install rpmkey*

kind regards, Otmar Stahl

that is just difficult. Who want to remember such command line construction? Just use 'apt --no-checksig --no-post rpmkey*' as described on: http://linux01.gwdg.de/apt4rpm/home.html#signatures This can be looked up from the apt manpage. The script 'apt' is a frontend to many apt tools and makes life more convenient :)) -- Richard Bos Without a home the journey is endless