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-vmdk.zip.sig gpg: Signature made Tue Aug 21 12:45:42 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 31d15426f3e10f98935322f7112d0afc946699a5 * md5sum 27a08055ef92b7304334d46251f7d555 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) iQEcBAABAgAGBQJQM4LrAAoJEIXCXpWhbrlNwaYH/3gjL8i5KhXLhWuHbNRlXtgY J9A1VNn/ByLM8TDutfOWuqyIsQI78A1yNEdUR3cBYYSThOmlaPobyeP0+APJuXTG IqGlGdMsQ7f8iBRuT7plNOg8zoQRip0nrzMlhZH1nUOc5L3PAke820SMRTWun+N/ aHIKyB+6UO+qEL0XAbTOW43YZ7/IRueXVJxCw+G+uf1re7ttcorWFr8Q5JwdKZvv eJKdW5FN806FbOMy+ObYHtey/IDMIvicowESwhDTuclsB00yJ8Y06GgGpvrRSwN7 frVhqN+y6FxlmlvOk5tVdq/wLxBOBXO7gVqorIqAQtBshEtt+iT6J6wylRjAWKE= =pDLb -----END PGP SIGNATURE-----