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-sahana-eden_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 18:43:21 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 52bfaeb5a0e807c2bf5b89d4595808a05b24b021 * md5sum 60b08996fbfe9e44a57d5bc0a81ac7b1 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) iQEcBAABAgAGBQJSXYy+AAoJEIXCXpWhbrlNYAcH/3gO/PyKVL2yu+eDUisE6e2m YzhidA1SerZYpTV88pYAi8Cz3H6RhdTTzPwtslu3+m9B8n/kYTCwUnB4Grq7m+Cp IhceECMAywnUdTzS1nbFnhubk3hMt+oJG3i7QLQljb626usBUaV0cuKT0qnFzi+4 hdpwchcBIQFDpCH0wBcmc1Ub2HQJpFZM9KpH5jVNQwaHJWfM76Qim87wENmUa27H peSOK0GdGVO5oN3kSngP1N8AHD6z5Q4yHUUYE97Stm2Ot1Xiy5bneLA9t0+aA+li LhNFKbSFiSmAXz0n1RR1Ynf0R29GGpD2VU915uDiBAQP1XJZIywOZs2aWQ3A/WQ= =ze+w -----END PGP SIGNATURE-----