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-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 12:04:06 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 5b574e68edd0f46900fecb0d8bdc9449042f1167 * md5sum f6d09a215445c42a93cd0405ca34e4bc 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) iQEcBAABAgAGBQJQM3ksAAoJEIXCXpWhbrlNltMH/igvi68uEvS6RMs0esGNHpps 8HtQHLCGkO5bjSheD9fyk0ZHOFEagGEGfKRZGHPR9oiN1Pc+Y52uxT3MrYennXwD QJvZ0BnjSzu+yIs01g3zPTPGoviU1LdHRsP354pFXNRxorwjt4p/uI4seEHfiQ1v k01R0vauM+Jv0o9UYNLdJuwHtMKVM1x9+IbOZnTMakT+y2zI8vUZ+jJ/tYW5E44K cwllx5/duJcM9h1ZB9F3+1SpCNgpbM0amE3dCxDwWsnguLAmRvG63ca2vy6Fz5f7 TnxK+nDN/2QqTtuGCvl+y/O8mtLPa5hvT7D8gtoR1KMPahiVA51UB6hGp7e1oGA= =WJx+ -----END PGP SIGNATURE-----