The Emdebian archive has been compromised and it hasn't been restored because the Emdebian project has stopped:
http://www.emdebian.org/ https://wiki.debian.org/EmdebianToolchain Current crosscompiling toolchains are available in the main archive; installation instructions are available on the wiki: https://wiki.debian.org/CrossToolchains I'm not involved in any of those projects except as a user, but I think that the emdebian-archive-keyring package is doing exactly what it is meant to do (revoking the compromised key) and so this bug should be closed. -- Elena ``of Valhalla''