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-vtiger-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Wed Jun 5 01:24:50 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 798ebdcb2db123ec12bebc9f6357c96b0d4ce424 * md5sum 5ed409598de9e37e876b37247ea6b2cd 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrpNUAAoJEIXCXpWhbrlNQM4IANpJbwHlCAFw/BN4cu8ShlEr Hdn0ko9jaRZEF6wZq1pIufev1UhEp+RUAS0d+CxCpiKPtUQbtHHQrLOeSY6kWIoH wO1VpqFub+CkkvPtZ20A6a93jFxR9/TQDwBA+YWi5NbNYK05gb6n4obA+x46GC1B v/ITypXDk+K5lVzDzMBID8Rvp1HrpRsBO0kaQdbqC0081ZeN+6b8X+TwxsoVF8Vv /TZIjwGZ5nrBFfnMw6SpjaybH0ue2aQUzAVLjG7WXUIHzKlAWHnn6eUAW7BCSz+F dvStgxzYUugkLk7ihribAfGkBhC2Vq+Lz+yG7JPcpF6Db7F0RCkPHASxKshBojc= =rtKa -----END PGP SIGNATURE-----