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-fileserver-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 21:30:56 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 9c356cca2de4c948026c849f6aeac9fa8ed762f8 * md5sum a9ac9e493800accd73c3020a303d2bf4 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) iQEcBAABAgAGBQJRrlyGAAoJEIXCXpWhbrlNoB0H/jCOVwlrY9+wS9wniHm7vTSk ZMrTfSQ7T0VXCiRJYXBh73JXBZ+AHa9jNxUVlJM0vTJqQM4Nr8RrPM77xPuL3em4 xKn0iQNniU3KUvCEnI2J6OzDifRty182I18mwruHBAT02Suee7Y31ALc61y88qZE Lw4N6IbpY265BszO9j8wOQV9wTQGb8s3s1XIriSA7vRAYOb28VxA5DDSS3uihVOA HLfjD/mPi4Lv1XV3bu46bkhphNL5RDAZvnBLdGcTBywDpYifd7ttVqTZo8ybjxot 7N7AgLugO5EFm64I2augSPgBQvwnBB6+8yWkOuRk/2Y1F+yshk2nxkzl0S2TXqo= =Rq4+ -----END PGP SIGNATURE-----