This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-projectpier-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 15:39:54 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 955401f9e99c5833b16eb6173f5b341086199490 * md5sum fb7a9757e180d20f427045cedfed50a5 You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrgpEAAoJEIXCXpWhbrlN7ccH/0vl6T8hXPofR6Y6aA/SgRZZ 3u+Wysv03g2B8YvZJFuuXz+j9f/WeG9O6prLDhDtp6GO+/heniNNir9EHuivXJqj w0QvKmnb/Apj9Us+x+H318tzBcF9Kn5+AMuzdjP+2BGoY72QVChP31rSfoKuw49I 6iYk1zkuHF68ygK3ipmVe9wSOUWdOGK2KnpKl1G4QskpBu16bHO+3OZkZh7Jl+YK Pf4VH9CzXA5xrJl8Oqg+sLrICAUWwhQq1CHsFBfyJ3+bq+5Nt1nYyFgMzcnVeAkq Ztbp827kVAInuO87MhEi0YCdZ9oR4wFvLRUlzlmmx0N6CQAECOxlPSjU7Qc4fIU= =1UM9 -----END PGP SIGNATURE-----