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-projectpier-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 16:33:37 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 01b2df440d9cbf91e0442dcfb6aaf7b039e2b5f3 * md5sum 5591885e1dfb6248af3d39df1bcf2c00 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) iQEcBAABAgAGBQJQM7hZAAoJEIXCXpWhbrlNOh0H/iKFGPxc9Vk6KHtWWV5BjEVC dpoApb/RfeOT/u+3MV41D+1uwbq2X3uNuK+SHl4BAp5+8ujxmSsnmZoGKIgEGqwE yStmUnhvkK0jbqhjyELmaaPHMMmBqEHsDRQIyOd72r7PmFFv+0De09edMUKWovg1 T1QiWyGFHj51Ph71+8ELCepTXBW/284Nj5MY9CpTto39p5gvHb3WPLE7C+f52X8G Whdd1EylcMDyBApxYTRkqiP3LXCrSl1ZLsC7j/M0VbRQ8rdP9OEuF/lPatlwVYxb jiO4zLvGExkEF2Vqh6/aVsfmafGVt4IxjljtpnS86qSgqpQNS/lIA1OOw+JzCyE= =db1m -----END PGP SIGNATURE-----