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-lamp-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 22:00:18 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum aefb31a5f09dab181754e9eab204b5a845864c94 * md5sum c2704f468adae2375e6fd10b376f620a 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) iQEcBAABAgAGBQJRrmNnAAoJEIXCXpWhbrlNXDoH/0z+qaB6KrTF16il5hR7auiM T9B4RrNY0tcYaB80NzyFR8ly2gGL1/iaiHN/9p2X9Ie/coD4GjNfCrULwZVlTV8y jxJe2+2PmbZABMl117bJeoO0jNXWe98Hwe4RFeHlQIL/3QHhkmycblpqftc6Zqcu sTxZaBgRRUGwTTzdoInB/smhdGHW9yTKX0DTKTIJqjpby+JnTpLGNYe4cMmiwi7A O5t5JVZUZIH5xzY+gJdcbQ12G/ggg8OpnIsRBIkbPQZ8BW7LLzQY7tZpD4rPVX80 Mc5v3L7x9NYbSoBzCEHAy5ONW67wXU+FggVkhomIJoebIv/TGdSRYkvqJbrbVsE= =pKq5 -----END PGP SIGNATURE-----