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-drupal7-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 13:14:11 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b596a6f15bceeb264733e2cc6045583161a4dcd4 * md5sum d8582714b1527a75007428df2d1b3448 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) iQEcBAABAgAGBQJRregZAAoJEIXCXpWhbrlNxb8H/1KVo16jrnvSRBWuZKfECsY7 o5yCWFbHxVrs5rF+c5Oa04U6P+lp4/yyGX9Uih21+QOdY1k++N6LJ4sSDvWTO9iy 24aVy0UGfnWEiMSnvYp1ms1Rxu07VAQUNuPGUHG440mJ0FEAzVHB5KHXcmZI/dn7 8cvBieqmEVYQnJa6Haf7xW5uGSoDbPaWSTFxrE+Vo//hsDhHN4KuCKmXT4g22bu0 Lp1+/QaIBoGNvnjqTevpyXeo6ZmYy/VwDaaK1uJiqC1pyvVoO5UQ33px6DXuPa+z +GmVSQv6aEmh9tD0mEFPFKjOqiK67LEkB9QDSJzgHEc3SOIr5g3mkg1sr5aQZms= =gB4I -----END PGP SIGNATURE-----