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-zurmo-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 12:45:54 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 86ecaf5e7b007db0af487900e4ea21f9f4421b51 * md5sum 735497be1aa3d82f8170da8c46a8b9eb 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) iQEcBAABAgAGBQJQM4L2AAoJEIXCXpWhbrlNnSAH/jUZ4unmaHV0kLv0ZUYGXY4f L6HcdsGbnL4g/nfVxRQG2BhlXTGtMWKH/DkWNTyVpJhNUz6CnKzjs4RluKEnzFMk f3LKA+L1XauHnRX6vrpE9f9aRgfno8E+MLW8r4FnU5i1CbRMx9dn9vraWBNsXzaH fC83gd/OCUWyLo+O1WZfdNemoxM6OtG86JLzSFgjJkhZvjjTQV820Hxk33qQ5saK kLmvYp2tlSZDFlV6bjRfoqnQSGnjlDEsMrcmGqEHGjl2XeJUPcbyV0MA9YZD3P4t XmKoBKIlCwr2B4DjEqoQnkG0srwUTO6sslhl7uVz4e9Ul8PXDClde8Rfk+067Ds= =BiCP -----END PGP SIGNATURE-----