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-tomcat-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 17:27:13 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 270c92ec1e9076bffa5b7555ba2dcf34542aa99b * md5sum fb2a9c6f405e1f3ba62ebd199505fabc 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) iQEcBAABAgAGBQJQM8TmAAoJEIXCXpWhbrlNQGAIAKizcIQYCfByRn+D3dlOLFHA NOprwVdsjpiefor6a6oejEzOnmkDyTqBBFQLfzcNaXhZRGymqS/aDsXVgcNxa6of gBENR4hDqO3nqfuGR4IzULX/wwDrLmcWaDLkyHGYxBG+LhVkcu4ud1UE4ac+Qg9n PsoWbCDolsvIC6zSMRNyVgFPStFYqcxie5Y1oEIyHRfkW1mWsIFTegEmVTtYi3Je EcgmZUdz7QcNSee/UHREAHqjINs0Ts7Ls7attBYrZ4LamZr6zzUtYUrxZ85YZLJQ 4TSB063pe+NPqJkfPavH22Aq3evjlMUD7tOUuJFiBbxiyKFvk2rrxE1svLg0Drg= =V8A2 -----END PGP SIGNATURE-----