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-tomatocart-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 10:23:29 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 833f8cf00abe3f1d8cc5ff44cf614d5cdad6cee7 * md5sum d952d846d5e9c22f5fbada4f43d649c9 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) iQEcBAABAgAGBQJSXmkWAAoJEIXCXpWhbrlNuHEH/1ZSCK/TlAuZRBmgrDN9kfw9 gkoun5F7rMC/fUeCxupBhoXvluUn1o+oY/qP8nDmFg7GhoGCPQA4bkkjlfx6gNus oZ1G54MgzOp42rcMZwXcQrGPVgkRQVo/Tm5TkBDrwM2MC1TuUVNfeNu3hqts5mnx hpDSv4vGZbhQpoGMbjJgsrj2hCgSjzCEub8qDRrUaqtQto2aXyujUcOqfrjMNPCO cnetjjekupmm6Mu0Bc4jDHOSzTZgAOyexf1nxEvmUK6odazienilF+wdl6WhzIeG 7RF5BEwn1Ne4d6Pl4laW36dNWd72luAo7S1QRPhqWOevT36qdzSxHuIa68OiTjY= =pRpD -----END PGP SIGNATURE-----