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-lapp-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 11:50:18 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 8e0b97ba571c6dbe285da710ca7ae6f51bc9818a * md5sum e98f1bc9a1c1c6c6e7d81437ab6980ad 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) iQEcBAABAgAGBQJQM3XvAAoJEIXCXpWhbrlN9rEH/AxGLfQsBKn3UTCaQCOhcLK6 PVH7K3CU+QQG01QFCa5DI3b6vGaOSoL/+kVyoOUYnoFyFWDNjR/7zvKuEIk+apJg CaMRQU9Nx+utMsG3kszAW2rD59JHBZASEeQIA7Z0tgx40qXBXkMTtuPp2u70W0CN hqM4+OLtzgnYC17o3JDPT+F72lSmlns3rFpFLMvLWIDHVVJ1HSf8NRFAQLdnpa5B kqNRGUND+F6gHmDtf91BPwDn0VKVvLsRZIMrjjIzMe0a/1DeTUxqWX2RcK5Fn2uH cgNMQm0hoN39SUiuXScnmEoFK5XBJ2+aL0agPzhWhjHOWG472ipUCSeE8p3On04= =hbRb -----END PGP SIGNATURE-----