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-torrentserver-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 20:01:23 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 9987d6f1a28a2150085c86aacf138103f52f5e33 * md5sum 30f151a08a92d41a7718916b1b4a983e 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) iQEcBAABAgAGBQJSXZ8HAAoJEIXCXpWhbrlNsikIAMMJj7cFpZQzgfgzz4As41Mo vSAY+5u3ZeBdvZ03XtpaOcIVFXM4cvNMytpykka0Sz1UgumlOvT/PZtKyGRtAhBi 0PFgbS1pInuS/xcfzDkEieDxdh0im7apw+MjsaLzJLoecDQOQv2/LjEpcebz5yLE 4SHJUD6sTS44R73pUCL5dhdeENSW1sQxajphO+HUsCqxOlyKKxWNzPUSTqSI3fgI Xt5lUXv56nIL/gm7hoaMkrx/aVs7/IAR5A+60+1wzZhfI1bis39+semKB6VCULX2 IDrDefseAsGNes4QrI0p8bXT8FEH5SFiqH7EGdT5nSW2wvpadynEllJNncQ09N4= =J5Fv -----END PGP SIGNATURE-----