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-redmine-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Wed Jun 5 00:31:37 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 27fab72a8a4e0b8b7edcbac4a4033a5388de37d8 * md5sum 18bfc6165d6ce2127c0c676d82ff2012 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) iQEcBAABAgAGBQJRrobcAAoJEIXCXpWhbrlNu0QIAOBF2y5yuqu9BBTwSVm5N2dS w+wFTNwaXSpgs3OqvddVFehS+587xv0uheQT5dFQtFgv23n6dQbnLkMR1HfIsIyi fpEw/1eSCtJ9kU0k6d7QBr4WNPlS4Ya2gaqtVw9QK1Nwv+w0S4pzI/WHMJxbZcda XIrw07iTSAOlBQOPB44+EAca50twj6LeCIuC5qFjfwZ8KPx51MDiandV3cxFlxZu gxJMKMGQTbxnwtvNi2SMNZRcsc43GakkXIPQaQknEl4JPVW7yNn79rAA0saj9uWV OOkx5IU4+0CNOBzF5be0p6Ct6LiEJwTFDr+HZ84UuZNI2cGQBXWgKGul03crP4Y= =aN31 -----END PGP SIGNATURE-----