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-7-turnkey-etherpad_13.0-1_amd64.ova.sig gpg: Signature made Wed Oct 16 08:45:47 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 36de6f819f336e261bf3dfe123c9f98b1a949ad0 * md5sum 201e060d58af26ae74f52200e377f118 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXlIyAAoJEIXCXpWhbrlNxVsH/3/F0lX1IKBgiH2c1B4g91y8 L0/sR2+PMbjjNZnzExOzIRlE24HU0fvYNcOPRu7OqshAG81+aOkkqK1nU9yuHu5v PdYfECM4YtXQmPZGrJu58SPYzChDPe54c0fZM53PfR3idRM//j7ASERpi6M9V7sx 4UviqlbQD+s+Ia9VTVj6PB3MsBBiJ3U/DdYIshk8P0oYs8Czr51KnI4UQnTCa5es j4NcTXSYNUTrqBwEd2z2RPxpAdU0h0HHgST+7xyqTBXhqFVCmRGtoljO1mTxKkm+ jplnpLzpYTgNUQUlIXmmQziwawj3tIW1UFTU2V5+cemioRC07xNsOWxd8utc0Rs= =jLcw -----END PGP SIGNATURE-----