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-tomatocart_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 19:33:41 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 9b687e393ae0aa36198db5bb64ea820cad1c2c42 * md5sum 85514f8aadf44150f927125368157c0d 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) iQEcBAABAgAGBQJSXZiOAAoJEIXCXpWhbrlNlbMH/R6zK8zi1BakQxW/afD7lhfw VcE0K6nX4gaFEMiUXGjHTX66MbUlj6bsAziEesorPp6oXyOTTcTWPt18XFwjYM3J C9xFbm10v8nCmWsSM8Ge+o3ooidyvIremYUaNjTb7EhG6fcxzPWB4124K7QKFF26 CBk+/Hvk43UgF5l6JBpYhl7NTR3Ek4oHeB/8zympLH3PT7gP6oGKTtzynSRYSbKK KfmGSoHoFihJnxzFcdQMNR61OYFZAvZckEIlfNnLrScyWuRbrT6S9ChKZM5P1zFe 462cfMd3i+ha0baodihju1izf4GvHHHBgMorc6HWixgM5RBBdoHUk/o89fav/20= =potq -----END PGP SIGNATURE-----