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-orangehrm-13.0rc2-wheezy-amd64.iso.sig gpg: Signature made Wed Aug 7 08:28:02 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d78179c62b16391257b1e593e0f922fd7776228c * md5sum beaa273980544dc200d4d2939ff29379 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) iQEcBAABAgAGBQJSAgUJAAoJEIXCXpWhbrlNuNIH/0lB/0G3Mz7t3C2vfwE9NqST 8rwxvDnkBIACvc7WeYoMLuaxUgkqWmAkwHicF7dwjXBIqiFYU+Sr1tq624s9EaVF TUpuuumRx4S9hjMO5WX4MgH2ZcRzsk6wBf1JdAzN10oYZiPBQerGna94LUUa2/9v yvz4Aviw1F3ibRPkhmAbETPJ/kpWmJAQCaCAXYNguwB1JBhWGdYuzwwuDfKefdlT hMpMEE+fm0sv11E7k3zZnKGaHEPEZgUuTxKWgFu4siigYqfCRf0odqCI4CcjYM3m wACHSiIbLvJlioJQcox3INIC/cQyhMmpAe+OhcTic9xWdc1oANKSVT5enIeNyfU= =71IE -----END PGP SIGNATURE-----