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-appengine-java-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 12:53:41 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum a7eac9f8cc7a7090782ef23259b7ed534bb3aa15 * md5sum 95d8d23533b2853805914e57932aa7c6 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) iQEcBAABAgAGBQJRreNDAAoJEIXCXpWhbrlNNU8H/2K78A0qWk7lLOAJ5Op4yRJs qbByrMeNBcys7Sa6BbLJRMEJUoj7ipL2T4qanuaFSZSWzCmlbkSx/kYdYvuhUCwS BC4x+j3JPNuOSUSw7NU/9p8elFnYAHi0hKFQuqF5dDhT9db/L6JBcMjCscpg88BH T0iPqoWn3u2uJdgqsQ5WQBRwPItN1MgbbUkOobQm8bHAyemIxk46roYTX8HT1uT+ JN9vj3eWhmkndC6oVtY/Y1oX1uBtyFx/UndOIQpG8M4H/VU9awEiCnNduw8jAfuH AchB6Dn5vdC9xTsK3NUgU04q4Dqg5HyW/kTXhUO3gvpvNV1N3JkeR7KOvxolPAI= =NUo2 -----END PGP SIGNATURE-----