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-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:12:33 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 25c7018f7bd27bfee133bfca7304e2f6cee6b754 * md5sum 896bfa788c0b1e35e48de8c2f5c2c4d0 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) iQEcBAABAgAGBQJSc3B6AAoJEIXCXpWhbrlNO90IAKrF4BHLWS6nz170rTQvI64W fZ+jAUToscgpB0hHyIunLyz4SVd9Jv96xBUqqYKGVGlelaMgfEs3d5jsQSuLUITQ MWpvM52j8pasI00BXAyj1yNek7nSchBjdvomqpVdw/zDKKYEP4G6OPNoYWkmOxuc bcwTojauXR0mLgVfJJGiRy5rFlivYiwaDQ/ErDX22+0VW0f2OPKczT7iP5233MCA HH0FgLJk6YaSF/RE1AXOpVTwmRS93k/H9y5A7lpYNWwq4+iAsbJNMBQi97mxDMlQ T9neG7YuXVkQWtdkmdtJ+hwn5aTnFllQQJdJQkQWgZRgMOUaJdyB3ZHiJ9OyPMI= =IBT0 -----END PGP SIGNATURE-----