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-mahara-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 16:31:19 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 8a60936721425df30c267b437deaa0c950ac64ff * md5sum 96ba8418c896ae9ffa4dfa35534811b5 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXW3OAAoJEIXCXpWhbrlNA6cIAK4KbNY7GV5V/kpEa3+BDXEM OoHQw8gmHDn/fdGfEA9WvWkThF9RD26UGv7tlhhpuDucwmN8zSeUqYN9Vzin3URh osanNYx03Q59TZ5BoC01SP4ZcpINIAafisO6SS6CZ9nS2/FI25CtSl9o9pOCA8Sw Z9WElgZbu2VYshpGC1noVKoVd1VZFUjtbAbXaoR7riyd74ygk2f0sc1nIrbnI5O5 jjemX6D5dFsaWrvdfxnEd7PEHYMBnbB00W3T61bWhquM8Y5cCqq3u23LNqENqgzU GGZWwcYIhXqiJQ2fpJEJmVkMCNH2/Kg1B/w1BzI4pXDWnEbYX031/KXKMFFT8hA= =83Vo -----END PGP SIGNATURE-----