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-django-12.1-squeeze-i386.iso.sig gpg: Signature made Thu Apr 18 13:29:50 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7d6b32a6b0c1e0cbee9bb33cf68a0b57d21bc404 * md5sum 80420cb777fa8d52a71080a08b3fe8d8 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) iQEcBAABAgAGBQJRb/U5AAoJEIXCXpWhbrlNe9IH/A1WI8IF13wPt1Z73J+srvOb xp/ywCjm9lH+JSLsJ27ALTi+bfcrHMccdqCnGjqw/LHf9q7yLS8+wfrm0CeXR2Nm 7w77+6lpPVj6Xi3hDHEMBxYWIWXno2hh6jsaWFqhZPe7sC2Ig5Q3GMHn2k8Dj8Pi oFQimo9lxoROkuFUCiBLuzd01WOqn6FrZtYwbwPqLWQC4epwNIhArnXQyhILO/Be qxOlXwAHFdT7YY/Tz++eeLTlZlg4tb9gz3VLotmHDfMGaMfvRPb80+7sYlCiBKeh z273bgTZnf+E669OiYJwbz7e988FJoJJET1S7V34SVvS3ujuGM5BGhs8HGDyL48= =igsP -----END PGP SIGNATURE-----