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-openvpn_13.0-1_amd64.ova.sig gpg: Signature made Wed Oct 16 09:29:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 39b8817c11421405af94189e116e3dcb3864834c * md5sum 3e3d6996d91aaa13d95a250c87af4718 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) iQEcBAABAgAGBQJSXlyCAAoJEIXCXpWhbrlNw8cH+gJktS9cT9DWMEIGmLAu2txk ZdSlpIFx/xlpRRcqN0WI9BDfLFz3gu1lXz6cgtqQC4X73TCsKyLW7RPJxyQNOJu9 LPHiRvq5ZzL8lnRndY57mQhvToXnwncDyjC8SZxPFxIu1U63PXnb8d4JBlS9ciYg XJPCO9fifA5B5xRRf6xMtPO2+tbL62jH/EXqwAp1IvSxc0doG5YwNPiAy8SC9BIM lDpSKqqhjPPgH4Pg9MBwt0WwCiUDUrIbIR1YrNWbcOzt1pGHn9H926lJPq2sRixh 1jKs66WESoLgyPV+TL65wKKGqjY14glbQ9jIJHwigoaCPTVE+15l89JH/EpriD4= =ltcu -----END PGP SIGNATURE-----