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-oscommerce-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:27:44 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c09823f5565ad8f45b9baf54c3c39ecf6f258bad * md5sum 39c4710c809691bd41ecd617089745a1 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSc3QHAAoJEIXCXpWhbrlNYf8H/0AEkUalsSO62S1efH66v5Ll EPBfhD3rBSqN7D9ofUd5YjlWcnRayeIsDTgGzA6ho8aqaugH9epbsKjFbmzpnfpi ZVNfOzwwagP/OpUjyaKGJS/a546KATuQ7GIaDANMsFsd1YYhTsfq9AA6XB/9KY5i qVrgJd7eUKUB9o1fyXs3547/U80bKhZIh2QsT4eNL7FwWWUhSHS1aN6TBItWiiO0 jGd8iZoRdDCndpJaMxDPAst0kzvr26KWVoIYWCwho9o9MNjzFvUXAWrGvMecnsMo 9rBGhdczrdAUKeiR6/B8BJMpCKIdgXYXabyqDcTbfepRaGO73WVX4jxtauMs8Qc= =0Whg -----END PGP SIGNATURE-----