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-phpbb_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 17:46:18 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 170348795c992cdfdb6b00cc4b5e92ee790078de * md5sum 2c515a31d40c88379b6577ca2681e57c 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) iQEcBAABAgAGBQJSXX9kAAoJEIXCXpWhbrlNlKoIAJ1i7gaY2kxcpH7CZVwp1Cne ey+j8YgBS5iE1SgGAO7zB/qYxZ8uztmrQ8Bgdvna2w/YOPW9MbB/PNR5Otg0vZ7K iHpQPxK5qJQgFSjPygvf1bhhi9epTSFGWS0ONm1Fzc7KyJ+9lq6bEXqVETcrhXgd z2MPqiFfSaRo+HPtJFhstbamUsLDc3peLEp4aRHOxl8VSAG+kGPlNoXKEUnRHocn na4lHVkV/4U42+qlofa6WX/ACty1du7IJOU1yMaUB8SOXVOuTDuwJKbiQXT5lHI2 Xvbklrm+7wLOE8KmOwlY0yPxKswmvvvbyE5CdWO5s5BY1x2AaQQOz0zBaRhB9A4= =//fc -----END PGP SIGNATURE-----