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-canvas_13.0-1_amd64.ova.sig gpg: Signature made Wed Oct 16 08:40:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c1ef5eef7d657bf545398ff244651446db734c77 * md5sum 10d6aab1e2d48268845fa67d887ed1a1 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) iQEcBAABAgAGBQJSXlD0AAoJEIXCXpWhbrlNOgQIAKPkzQBe2ko8nB7/HvT+K9Do EJbgq2lvTtuzJH3FFu3kNVLUnKb2RVFkSAWe+OVd8Kf2wQJUS1gj1fNSrbxHFV+n YI2mWVWkMkJIJS1XGFRz4CQY9OofsrGNE8EdJf38ZcoBQMvF6W5e8TIBKgJmKuUt diHRPHQCNDXBYkg9lyxyldbLzOIGRDiLrR4imuFL5S7GGyKMHMifh2LHbpVxueVv TDHam1/V41m8IK8MzoJ8pkeGSEWzzn27eyJ973NHHHPEeOPnMIGOky2HDrgcVcJW XtnQ0N4L26vEbuaa8w35PcFLfgdSR9sFMmooc2wRiTi/KDf89XszL6SCBXSUWsU= =qTMa -----END PGP SIGNATURE-----