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-zencart-13.0-wheezy-amd64-vmdk.zip.sig gpg: Signature made Wed Oct 16 10:47:31 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 3f9be952e04daacf6696aebdbc44d10a8edf014e * md5sum 48ba78461527a82c8f5b1a1f2a399264 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) iQEcBAABAgAGBQJSXm66AAoJEIXCXpWhbrlNoS8H/RR2G2V5i68I3kwM4sMIYMW3 rGaom6gQr6oYW4fXDHjSCEc9L+lF1TRkm2gWnpiAjbLN/nGWVXVB374TH+8xMT0P dB01ptBFxujZgNlaa176pAgmt8YdOJQ/lbk/jPDzzWCGvneGg8kdppE4F3d0Bcjf wx8kKVhbzu2Kz9cXYSBaLtUBwYW0JXRi55R+Lz/pyS4EsNSGqATIjd5wwhXHGfvL v/n+/93JacFAvXIFxMWv1AH73qmaCuhvNSkHYmD23359iuNMntizhF25KGrAIbru poxz9uPeQVjBs56BOdELHs4JOk0sOxvAVNCSLib7ka9nBIQTW6sjLOfaAqca4so= =b0K/ -----END PGP SIGNATURE-----