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-openldap-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 12:03:56 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 0467d4ceff035d9f943b2f65865a9fb782fec5a2 * md5sum bc5fe1c0831639a0c2675b2b707b4bac 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) iQEcBAABAgAGBQJQM3kiAAoJEIXCXpWhbrlNiaIIANhKXiC7dIwvP2hA/YgcmdKl USMoGUcSoASovLjwK3kQ5JrTHWpmtqUJ93Pnl77frbPJVb2VisvHcVmF7Lc3XkKv noX6ehHvHxCBRfAg4q+IUujGFQNlBZldLbDQK+TkgD2pY6llYhU46nE/zuPqEPCr ezJuitCFHQpHfRvFmTCqC2h6PxIdmczZWjnemBWaenK4SrxFkC2Et3+GHxVyzz4F wh4+fxz3hSYeNSTbE3n/wU7w3ytI7ncAFgMRXpvnCwG08YwHX47zvrIYSd9NA5Zu 1LmIhQhVlq6bEqHQumuttx+vI797o9DMC51dYUMNaZi9oHM2wl38nCv1yRZgUXk= =yevH -----END PGP SIGNATURE-----