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-sencha-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 16:02:50 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2390a86409f834cf00b74594c4c639fd092a8001 * md5sum 3eac4613f809bd88e57a0813a3d70220 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) iQEcBAABAgAGBQJRrg+WAAoJEIXCXpWhbrlNSCkH/2l2JLHEif17dbOanbMCiJqJ L8uI6PJzbUgYIIZhXYuchcmz/zUtkdpCkgYcGSoAGUUaOk2EaXwlfQPc+Cv62Tb0 mc7EMhGn8ZPc2+8h99NqPCSbna3XjamY77P2oh74mnBEtyOYCWaMP6To4M5fQo4x T49RUgyXPJahIspXPxR7yGKEDSnvtt3c7xzExptrSrmPI3+8nxSZxHLiBPW9xWI2 1TZzHM18ws6O/h5Bp+4H83zTc0eUIaPQkUR7CkPXCc+KD9VZLPQ/a1r97CMg1mQb UzGn6KUvPGGmzxOoAtukC0P+GnCeu4N6YGPyHpQkkJnLntmNNXNLAO4RLEq1oAQ= =NZyF -----END PGP SIGNATURE-----