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 debian-6-turnkey-concrete5_12.0-1_i386.tar.gz.sig gpg: Signature made Tue Aug 21 13:33:10 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 6384247fb5a39c00ee267e27163453341bd2681b * md5sum 7418f625cb3b1dae07090659b187db80 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) iQEcBAABAgAGBQJQM44NAAoJEIXCXpWhbrlNh7wIAM6wDitMrPShhlB36j88Soy+ +jasopY7pySyu6vjY9Rk1FntsFKktz7ORqxNsSF5jWXJAiklr8BYJBTDbf+jfSCz z1PT5+WVqE2hJg3IzJhfsth8/TuocY7UJSW2jS8LxCsjaSkxJNB9chPJcTi6AOYj 0QXZZ94iUNC6OhUshO2yRyvZjk1FWnhdjFg24xPtqAMFbqCzhZo2Uvp7hO3YBqML f6gK8h7oYUPqPtWEWMqQyib2tzvHpZKn+7RtoXxSApR43mWC32Pz7L4znbV4zIr1 MKUGhIllfJj3744pAq4igUIZC2oTudtUrOc1ehc13wejm5zA5fTIdYcGvYljy1Y= =Dy/4 -----END PGP SIGNATURE-----