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-zencart-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 17:20:55 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c97dc4d1bae57915e80c434b4d6fefe9df2c2d5d * md5sum 3e80d4ae880474441ba57373d724811a 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) iQEcBAABAgAGBQJRriHvAAoJEIXCXpWhbrlNCVUH/3580aPREYtPrZj018sxCwK2 A+5NjMUqHcKmoMinVM8Md5SmRLE8bwXWW/EgHVLi/dGUnwomrJfk7IIcCPTZq2XH 5sG2CDwm+XtHOJnujsI6qCr/QoEohWWsInJ4/53X/SGBw0AyVBvIvV0iehZqT7hA RtMYitOsa44yVpfmRKNwfJaP7U0aRefNZ3YrkzVCxNi0bznarCafMc8VTXs9vSbK 6DpTDxlmIQgha9ry6wxyOVKYqlJV7TyuRr1ntatgpBNS9uFNqGUbWY5ZK2QiDg3g qF1uGbj+KSfmAnxaPh99ibBXNz/4Qmvus8T9RbFMmURAi0xZC5JDFK1ZU204Q90= =gfnZ -----END PGP SIGNATURE-----