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-limesurvey-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 15:49:33 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum aad52bfd76ae8a32c9c96b14809a048fd67ab63d * md5sum 7537951777e904373b32e6255d51223b 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) iQEcBAABAgAGBQJQM64CAAoJEIXCXpWhbrlNwnUIAJySRGm2U9qLZ+nhEUr8OgBU 3dDt+TTgbcSKnM5+wTJe4HO0tUud+B5lSSfwYT5gDGXc1su7Dtso5PsppO4BbUcq vYIvPsRPjAaXerNCs0CviCLomFt+nO1r2CtvfeQ8yuGV5dcrqhVdaUSBorAVhOLX 18P1hHfRqllVStuk0UOEuDuc5ljL7uk1bDMT35RcDfAqUwq8IsuqPkSPOx5fa5U4 v+PRR4ZSCwJNy1lat4WvlJel0MKeYGK4ThPxdGhW7UZ+2CjsnbQ0X5hRu1QsTGrh JN2YFm8EYP5Ms1h/nAoKPSlGPT/bY3I7vmAwJyfEXG96EK/yRS2AgR7vpGkm4hM= =yii+ -----END PGP SIGNATURE-----