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-openldap-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 14:33:40 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 60238e4eeeca60a0677beddf383bca0c6aee4bb6 * md5sum 2055c0c67394906a5938e03a5bf814de 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) iQEcBAABAgAGBQJRrfq8AAoJEIXCXpWhbrlNamMIAMqDb90V7trP/Wwgs/Xz6se+ qvd2kL7q9cjMADyUhKK9XJv9OGXU8IRmkBvTeAR1yn0yf7UUZu+2FfK0zhsoPkFK R8Ntzivvnxz+J4i5JX+xMnzuVZeMvw0xWOuI9/Cmds3qNy2PVE9pYpMoCFd2LqBL Lf6BwIkUX4fUD9wvagSapnu673RAxTr3hPKV8xoKMGIBeuz8s8l9bdosBvmLZep9 +yIKfO+ZKqGrOhFgibTGtok7lqTHlMpFMiVOrxYTxDOLk2XCMPxY8oQH+swYsCgV QROEsZ5/MK55Gu7ueSUgrRRS/sGlZ8+dmIP4KrjaAFbviFvByZvWyPQH7+vez+U= =xcv2 -----END PGP SIGNATURE-----