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-openphoto-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 17:29:46 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e9bf14e94f4b4c1f9d196b4b1e15ed6c9fa405fc * md5sum b9fefb22b913c1f9bf1cdbcae845a4c1 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) iQEcBAABAgAGBQJSXXt9AAoJEIXCXpWhbrlNyPcIAONdloPmDUWU0ED+2PUeC/iO I8hL95cPZklcRkuWBA9HXkGn4DRVxbwOFxCAa4umwOW0SPN3cDBVYBSgz75xrfcO xAos/HcOtLl2C4CvKIqiCnOyuqjpqmUXiTPaq4/gkpgxwJzG9/Li75Bak/Ync3QI iokMFGa6Nh9wpGC4ReDXr6H5AcoyTo0zqiuj3pP+YBHeogdZDE3i90EagmCRX2Ie LcXJpwIiYXiTeqE2UNJxm8UHqszmogAEBCBc5IbU8Rs/cKNWWW/P18KYWEezRBgu FmOuIS0gL9TdywLkzEzHRj8zA3aJkcKEBEPIqcIPXMt7aB+IwiEdzVYCAW9SUOA= =fKiz -----END PGP SIGNATURE-----