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-mysql-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 12:01:10 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 55ff801c105af192f153fe6248e6421a128485cb * md5sum a3fa98171561da87c89028b40173c4a7 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) iQEcBAABAgAGBQJQM3h8AAoJEIXCXpWhbrlNkKYH/RhRbHWA8oR+/O8D5bRd7UZ5 XiTgsKPYQkU6Sd8qoHWobqhGTqjN+KStMQ3w/JZDqqhE3AIu5XQEndAJ7CBDfegW Y79FP5WYG1yn5CkNF3f5/cVkF/GAkN5UlNRDR8QdLWNMjKse/R81ReHObuG6euAz Ye+SmSKxYjYYFNHV6M/gfa/JMkK4U9jGg8FIjj6wK6QFCD40+YADve5OBLv98OJO NeEoB8kx93SZXv0AkHAZ6e+V8IlPaiNifZSPfAqdoBbZ43QXV28GNuDsVeGr0InL 1odBVBX0Zoyr0ns0hKrSUs/+NWIBBLNfHhk7cnSnnA408q0g4V4nbAqrvwgZ6No= =J+ig -----END PGP SIGNATURE-----