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-revision-control-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 16:44:54 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 7afb8c7900ac8f9495f8fc2cf200731743b51195 * md5sum 9a83fbbe02a9daad7a5f1b7580ee41a2 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) iQEcBAABAgAGBQJQM7r9AAoJEIXCXpWhbrlNKfcIAL+k7hioykiagSmgUvavgDK+ ByRCu9sjwUBTaQCCO7OuVzD3+c7srcn8HjxoXzYXOdph4VffC1IzbsASvahzzcHf xaM/gD4RcEbljOrrxGbv0uQqyX4PlVuYaz1fRMe70VjNe+4XYPs4Bq00WYxHu8vk TOCtqFiZGstBBZh9S3Jmu7PyQCRSCMUX6yLiuDL42tID/ITzdT8Vzz+cuVgF5wZO g/RR4AO4X0fjUg2ish6dRC6KWZZxRH5on7m/ftr8BklncFcaXDgpQUt9FCJQdcQj 7ac3Au5A9c/ec7lmtdDhN0jP/xxnHUuTtQK8oV7CIN2Ie6Z4Zovhryn6zHFuvw8= =V2a7 -----END PGP SIGNATURE-----