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-lighttpd-php-fastcgi-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 08:49:31 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7d65173beeab8d57a77f552cf1b75c4e75b22b13 * md5sum 00b74ea10b10ea4cca205fd9ab9e462d 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) iQEcBAABAgAGBQJSXlMTAAoJEIXCXpWhbrlNz8kH/2sBEEYtCKDtFlOXnxPGw8d+ FT5/cMSisn1ah49TFBq2FarYXLut8tAM1syUsaPQ/XkYUsgKJ+PdOOOt0jtrvFCb j59KwbUBa1NG4UiocyPSeRwUuXDdRHhVb9tTLjmXEdgIE6gvxcE9QTmwy2xTkWyV al0ySf5CYor+axPE4nJ/qlptxDyucXs6Rxgjh8lo9UNolgT7oIunJPJ1YmVRkeBu f1LUUp6V0L36ZfMTveqVQtE/ykbB2TErc4CF2tvN9InFC6ZzDU6xZgHt06Pua6Ki Tmq4BR89ECdXKpg/uFYWcv3FIbV28GR2ZVa/wFUHjhVlAsXTheGX5w3ihTWqw5o= =A9nN -----END PGP SIGNATURE-----