Greetings :) "APT Secure" is the working name of a project to add to APT the ability to verify the authenticity of Debian packages. It accomplishes this via a chain of trust which is initiated by the package maintainers and ends on the installing machine.
This is a call to the community to help test and audit this patch to APT, and to eventually participate in the policy discussion about the patch. Please see http://monk.debian.net/apt-secure/ for more information and to download Debian packages. There's also a mirror here: http://people.debian.org/~walters/monk.debian.net/ peace, Isaac & Colin