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-simplemachines-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 17:04:31 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum e6cc8f8ef2486a66a2e4c7d51129218e830aeea7 * md5sum ba334d03a75565203c9d2537ea19b9b5 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) iQEcBAABAgAGBQJQM7+WAAoJEIXCXpWhbrlNI+4H/0skBYrf5VjDpoWUOkYtOXj4 Cm9h0UrlGSlDegF2ipss3QRuDqTGUXaW8N0EOvdvcz0uWDwhAtkbu7QF6bBFFtAB wkxgK4ouLCaQM0sKm87SQlO2ysB4yRXnGz12nstkXDgv5hRmjm2t13sq9VyHg9SX uzyMGPtQKxKPcRRZQooRjT6ZL6XPuv0qYlkOAkgJeTUH1X3CK6jvye2cTkG66EJ7 f6EE+Jjqhn1RnHRLGuAyaH9jY2kf9LGr4ooNKT7uec9isnu3EbQXpI5/1InrO/k4 8ACfgqDGMNFABA8LLrbcNcIGVViIgaBV/5dgJmS9YAy+m9f9ofsLhna45kfEFJM= =jdSr -----END PGP SIGNATURE-----