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-phpnuke-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 15:29:57 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum dab0c4e4a34f043352aa077a7f0b56c3e02374c4 * md5sum 4cb56753371e798c5e090cf27ed9de0b 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) iQEcBAABAgAGBQJRrgfvAAoJEIXCXpWhbrlNh/oH/j3VUc4FWMBM4N81pYDU0O4h hsnQPBUrGwClkul5pjEkCKoJDla6jEaWwSXsHVGrN5ZeAi6C5xbiilj6DMeiYdrL QyFZawommFtetGro+cMKEVoRhyOBQumgzKF6PxO81pHGsk45wRI33q080jBp3lPG c7SK+km+MWnsqNOMHDpGMpwLKXbeV7WQqH84joUZBw8kamV1UrL/fmExbcM+e3mv ACkxsuMyHPLUSeMy+bBlWSWpkIe6BK6LFyYU4+uFQ4W0xN5HFSJP/EKsOYaL0x60 X63MfHKUe5P23EliYgcO1ItpYnFEwY+FeId6GGpgD88Tc7Ooj42pJd2Eq26g+h4= =wFIO -----END PGP SIGNATURE-----