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-asp-net-apache-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 15:13:59 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 5786b8cacd16d6267bfca1829e5f02a7396f40ee * md5sum b8599675d96e4b63295b235a884c9cec 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) iQEcBAABAgAGBQJQM6WtAAoJEIXCXpWhbrlNU9QH/AuDPnWVg5N3/WjFH1MA3Lbv ft6FHk2LTx/9Zmzh23NXnacRkvz05qRDshLoC+R1Unz0Gp/zyweXZ38rKXtG3oOA ekbENDsrEHzY8LbvT1w9vTZ9kwQHRSdA86qPLA3oZc1QmzdCJZOCMmoqrooln/YM O6EZCR35uluHthSLOt7En8Qf7F2O7uWZKHW0GxSnTPZh4GQ/y3gpEh2eKhEFXaVK +w3UgpfOTLrUFmuOd00ctz8K802/mvLqw7vRr1F8cSyU56GapRMd2KmDQx9HwPqR ic01FO/F6A5R/nonDaE3eW1o7s/zvVb42hsHXPBKXbVpc/Us5FkHryNKsJT+4F0= =SUkC -----END PGP SIGNATURE-----