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-core-12.0rc2-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Sun Apr 15 13:07:02 IDT 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 643f88eb047b5b20d603bad821936b80933f10a5 * md5sum 70fa544cf42e7d98a58b8671ff657f84 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) iQEcBAABAgAGBQJPip3DAAoJEIXCXpWhbrlNK4EIALgD50Zxc0H9n287hbC5tL4Y fizvpIwpivbaNo8/ZaCZodJnO20yHx5N/dydBsNr6+QSGULoLX2FwwTXkEBgY7sa fyZ1Ika5sddRYLzUjJMGIrl4avQfFxooOf4ODO3IGjsjl6nEgUavOYe732Gj3vlH tQsv/slNOpLhbHo1ySWd8m6VcSGfSOIqZd1UOdbGHiP7TCXckCED8+T5H+52GlNS ybHuk+TTcdXJiQzey44LBhUQhHgK9EtCeUp56sqgiqVhO/Wk2bysCChYRWEfgjdG V7nEfOd+m96nWf+fjsD3+W+EUJA+9hlenM3qJIP/HqsKQlUEvhPRygRvpZx8c04= =FoGW -----END PGP SIGNATURE-----