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-tomcat-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 16:39:45 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 21796f07dc1b442f4bd8c89fe27b14dc6bf3f76e * md5sum 0be2a10fcdd2fb791ff3324316b139c4 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) iQEcBAABAgAGBQJQM7nDAAoJEIXCXpWhbrlNZkgH/jgadXZV4uOyd2rKrZ2FRIyj 2zN51ZHVLCXYBSlh4onOlzqiIO94moKz24zo1qT14GB6ugjxqXTl9UcumkIcRCqQ /G5JdhAHv37AYktjlwEiKTkfVQHWK/BWjE1EcpN136z3w/TMcy90EuP7JDjetTPa lhfiEcaEzmU+XM4FLF8l01UW4OKa8NWanEthggZzyAutucXV/mNpLMGuL0tUcTa9 h/BK89+/oiajwvHAdfeO3FoUJhhZkQtaYW/3J9kteQT3c1GlcFYemm6CkT2Q3up+ yI3vQ+PGlE4IXJn5uuxZaYWLxT7iJuh2TxK7xm9pAQLnf2nIDYw47fT72CkxUO8= =ocZ/ -----END PGP SIGNATURE-----