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-moodle_12.1-1_amd64.tar.gz.sig gpg: Signature made Tue Jun 4 14:43:03 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 75e9a816b6ef5dd08fc7d579e92581002fb6f124 * md5sum 0103436b129cf22f6be41dd7ec25a50a 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) iQEcBAABAgAGBQJRrfzuAAoJEIXCXpWhbrlNQEMH/2SofsP4FwXQJxLMCfTfosGY 5oVg+BWrVmAExc91dIIvr95xH+XqQ/iVCEFx37EnRBHHYidsIMMthSbOU+YDEn0o ZUn1Rjosmh4Sljn7sU2wBmo8PkvVBl7wwu5iYWfykgzf5itXc7UrouGDuQnhyn9L XF0RayiUKzMEyXjMjka4MJ5kDQYiTpT+HptRiYs90IdJol3XfZ96q0hbNwM72B0k vuEBn5B2uo61PpnLCuTSviDnp/HjuDpAdFU2gizBG5sIcBsMOk1nNEEslNO3FSma jhxgj3kC8UgqC/sUfswBkNrXm163y7MINhtGKNfljBcGERj4BI9QN7F3MSQWOtE= =dOCq -----END PGP SIGNATURE-----