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-bambooinvoice-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 16:54:14 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 250899f9c7d405472463e987266804f084480400 * md5sum 3c72cb36ae7bc677f1420d6b1c1cfbdf 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) iQEcBAABAgAGBQJQL8itAAoJEIXCXpWhbrlNw/sIAOw0KXDEkMGXq+2P78VVcqAM ++AeT2Z8J2rZMhQ8stcC47v1SmLHmh1AFRrmjQcc+KUDB4GRy9xhxq04RB0GJi4Q 1qAu0H+Torixus5L/Ot4lV99hWBSjUXnuV/tLGC3xWbUhko0hVHjOf0l/rl1OGd7 6sfs6ePQPXCsGnwoVXn6bgHAoAIyGT0UEDyUxedkrogsfRXHvwQyrrA0CaVqLzkY livEHS8yDxiCm83U7+yWtN7IREAaQOTUKZkrtlz3KQUyXJuwrzj51NngbpiqnV6a 0FPLInlbYGuYTgYWq3Ze1zewsGnFL8DzzxIpzaMmzlQXZLY/vDZDu5C8NILGm14= =diFQ -----END PGP SIGNATURE-----