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-phplist_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 17:47:23 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum a53312da35ac014dedf547e7b09ad9ce26b168d9 * md5sum 83cb8c6f5f5726ea7347346776b0d2e2 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) iQEcBAABAgAGBQJSXX+kAAoJEIXCXpWhbrlNaeIIALXKc+LVc3vFxUqvGNtAwmEJ 5CfWIgFvAjlDZKSvV2GwxJUbdF1LIdgjNLhojL3Zu70u107VXXnMSgNys2ru8dEY 5hASnnKQrtI/zoa8+5w+UU6e+MgyHesvEhsJy3dZAaK8cAU/iNq6FdnHnmwh1/5h 8GABK1+H5W0ubIcTU3y+dXXLCJa2GYQGbx6dvPbwtUawpc1IyxjV469djIzM+nr7 8U5lJI4ziXL+ajB2154Doo5KkZQl29qbZCHiSz0LPgAg1IheiIPxAr4QI2W1G7Cg +xGSdAdMHqnI8lUu9T/nBW0cPCHMnLjAd5h/JujCrwQ6iu6HHWhPu9gDSKTI9D8= =olqX -----END PGP SIGNATURE-----