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-mongodb-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 15:57:30 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 2c91f61850014e6f1a4722683e4ccdc9f5a05b12 * md5sum 8e462210e9fbdce4ec94697c0fff1700 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) iQEcBAABAgAGBQJQM6/hAAoJEIXCXpWhbrlNFV0IALdEobdjhv/DETEtX1yP/6AJ 44SvjrE2odQkP1tDM5A6o/jNLA/jY8iWQO6dJTtzvbTttVqmTKjX5W+yrt70nbCn 37sJsWk4tPf3l4ZHgVNuuvx/V4Tz+aEtCa86jXMLmLAJOMcmHneCEgC1X9dFWeLG hhHcYS7JSQ17uTZlO0k73uLIL9XIkbE67y48c+FfjNY2ytQolEsLd7jYdhKf+4ap MpeXVtYkV0gY4etflXfU4BTPrwVJw5J0DA9qjXoGJu1b8YwEFD8h+DEUtKHK/n13 LYKzfoKfOu17s82uEFhT4Db1MlDCvalpo3nT5P5M6qMuZwxPkFvRC49jaNF1pts= =4Qhn -----END PGP SIGNATURE-----