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-moodle-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 22:42:51 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 1faec47f2de52e7dc66ad87b771b6fbcbe1a1780 * md5sum a2fd4eef85beb2d7c773adbe7001c061 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) iQEcBAABAgAGBQJRrm1cAAoJEIXCXpWhbrlNU0UH/jn4CTD4SuXkvJ0FHGIWlaGa 37/fpTNdqAKrrtAACGScyrKHwhveuskd8Zb0g3o2VTkiykBqEPb7A1qlofZnnd5p K7exyNQoDR3QpgXyLGvL1eYwE2cvUcbE7921Y0GRJ/p84wVHsiKsGu0HO2gHzl36 IN6DLDrSRhdq6R6nzL24+Z4Sh5lm9VlCque3MsNJZ54rc6iLKIf8RM6N0ltjXT6+ 8gHeAY0kCqIG+fymZbwPIk8N/wuEGjSKBcJvXz5H5M6e4RlKZEQMWNVWjn2VKDMQ cW6etb81wNKL/LXNitnhwB1pfjM7ZWxnJGH3E6dDgO1UimK3Ew6dn9EPSKX0QrA= =pTMy -----END PGP SIGNATURE-----