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-processmaker-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 16:50:06 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 1ee47478568d2c27d08573a87c54aaf871c71a5b * md5sum 20fd8d4ca6b0aa154d587961288b727e 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) iQEcBAABAgAGBQJQM7wzAAoJEIXCXpWhbrlNb+wIAMaqrs7Ecq3HW/jOJolCC9QA hVhsLMnVC/lx0NAsRE4wyAeApBZwqspzIaD3oMxJocuuNqJaST9wNkH/nNXyU8tp TgMI64jIJe9XKjFVzt+OGbkC/1/DbrjtvOD2VgeXwtvSVjobp5WpKRZoP70le/nn GiMdtiG0g/do0mGZCdw1w24YEKguazxKNVudKzCpDHlRrnx/bglU7g/MTJALHvBZ M1DJXbcEcbc3VD7TZlDzsxUd9xAAmxATpbPNsmmbJi1k/qtnpUP/+u3GSLk1Y8T8 39RwS9hPwar/x/nqBVxqlaEe0j1800ADBcbvpnxobVMMS9glAkhJuvIlBRqmCpg= =Z48S -----END PGP SIGNATURE-----