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_12.0-1_i386.tar.gz.sig gpg: Signature made Tue Aug 21 14:21:22 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum d9f36287f56c60b3a6b59b83afc741a6af929e46 * md5sum 1b24a12b4ebfb630beab7e0d83addace 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) iQEcBAABAgAGBQJQM5lXAAoJEIXCXpWhbrlNr2UH/j/jfytZMZIV0SIH4IRYy2wZ q8pHlDWIYT9vzNek8Ppf9f5RamevLS6CFiZKcRd5C0cSersRpSYuFeQDDW0YfWfz xrP+qaBIx6aUjhsuOvWzq5BFMBG7KRehcD6yVMHcVY4XySy7uAnawvWwSpesMeFc nzwbvh+vbgnbWOCmcBMs7OSABbkYNpMnuX11T4hfWy09RaueTXqXc+IwvfWYm7H8 xz91uGtdLTGL2JNvW63SnvaM6m05sqrA0Vei+FpxIU/PeAeND+4nV4OcsAachBN3 bS7c5bfJGfNfBWxXetS/5RFz/k+uH/qgzqCY4wtFItZqCic8nJzD0mw3f3tL7fc= =65jX -----END PGP SIGNATURE-----