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-prestashop-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 16:34:22 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum b6a86adc4703908fdc8a0e1a7373e7afb6e45053 * md5sum ed517781617d6fd2a2605f5a60da3eec 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) iQEcBAABAgAGBQJQM7iFAAoJEIXCXpWhbrlN4tQIAJEC/f2dziqdBA7VUTuJ81Ov zT86i6h1z1bOfSrbMdxqWslZDNItvBYZoSdeiQvRGp+5NhiygCMmvcLNUGyYryDx 10mC5xHZSe69+/VkfbS89WwO56VdcoYBYd4PqRbxUNPYvgEOxdrolbbMiWZTFKOb goE2cJmS4LWiLss0wVXtZFJv8sNXjjHp7WrMQ5ub7fElPV+j3c10lzVvLGeRWiGS 3cD7IT7V5UhcmywRf70NwO/p1NW9eotZvg3x2xC4ZDwBCqm09hPFN5MmJje6Rhvr LaEU9dgbfMr2YtoyYa68pxfjIzXDKAJRcTzWEfNtT4v8CmxpxDvzD2lU0zkS9HU= =L8Z/ -----END PGP SIGNATURE-----