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-postgresql-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 23:31:08 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b83eefdb1e69dc49ec647cf9127f3e5e61e1fc92 * md5sum e7c3a57e523c79c76f41762894eab3df 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) iQEcBAABAgAGBQJRrni0AAoJEIXCXpWhbrlNjuEIAK3LnPACH5O3PO/GL2g/txv3 fOstTlRg14OArn/T3Vvvfy8vqFg3PEvG28CkPG0x+fiRmdI3dxplOMADHegX8V/X E25R7B+XuYxiO7dmEja4WtqiwDXS+VfCQzNPoetd4/O5fUSM/1gk0eiJEvfnxFT4 PIsMC9QBWaWGk9BJR9uqrcbf+JaWmTqNYsSrtXK6QckKskreAA7dS6CTaZZDU1aR vUBlPTHy6QQ6OziahN6GGdcP8ccZixuh3FKvBFH/G1hc77aHMSaooll9jryWaJpV sHrpTtBTn61AZuvnMm8V/6CxRI+C6TepKRddFzi10Q1QIImbVvrpHW4zIN2fgso= =ZfiU -----END PGP SIGNATURE-----