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 turnkey-xoops-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 20:08:54 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum eab1dcf94153108aba52a8023cb094925e97347c * md5sum c7e9fe70929cc26f5f180706bbf98b2a 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) iQEcBAABAgAGBQJSXaDNAAoJEIXCXpWhbrlNYgcH/j4rxmS+Z8Je4tmBolEK1VxF cenLmYJQj+3Bd1k3zSRbBlCrYlzomkwhHtn2vVCz4ExAnRNTk+ofmU3yeoGdTMaP z7c41Tq4GB2xcI6kRzk1+WJZe9m6PTalxVOEh6c1YuKi47l9hPbXSgPsw8iKJD2N kXmMvK8xXKqU/DE0TSM31t5ZTaiiIk/gjrX9H759Vlscx1a+Vauaxqwl7xejoolw T1OxVI8oDQEhdYsMk/J1zQGjpIx3go1H60aMkk3TbVxaLZ16toUxuiLDcH/xv2sc Q4O/BN1RVc3X06WuPk7ItxLHwmws1LFOzFS5FmIubWBof2Tyo0WNZhvl7Es90m0= =FQTd -----END PGP SIGNATURE-----