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-movabletype_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 17:06:10 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f9bc78ebac9ebf467faf622a126823f54943c899 * md5sum e95b949f6c55aa3099f9233464ca8caf 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) iQEcBAABAgAGBQJSXXX6AAoJEIXCXpWhbrlNK28H+wUAgUcFb4ELmCc3on9eAXOr etTmOhSljVAdvrT7jbIGYNsMK5BJo4kpO0EATlKNdshnV6Rxwhc0NtBVx5Kq738k 1U2OVssydAF/60TdwCeTjNjt9bMPkRzsRn5t7Gw3DH3Xx8tCFwSz+2QF5/D2ibqd bvj7Xaz8WRniwUyv6UcVjZGOQAedRBKUmtK2blCvZlKLoIaEwxMGFQsXaKBQ4JUn QNk9cLp6BBZpzPeDCoSAZnzZaarP/slBjtmVEu4eu10XyKHfNBqOb9E5wXDxFv0A UXOZI4JjXRIlufky3yE8h/OqTNMqEYDLb9F3pnxu26MUUE5muStDoG4LhWcoeSQ= =zuib -----END PGP SIGNATURE-----