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-rails-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 18:43:27 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 583b7d1eb7a150843cc712711d3d0268f62f04cc * md5sum e988b2169136e44b28731be4aa8ea4f3 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) iQEcBAABAgAGBQJSXYzAAAoJEIXCXpWhbrlNOLEH/RHoHbJeg59kRzv9+NHN5Yj3 YGxTQkDCQYnEOOugKbQr4D9HNf+526BrMoOGeO4gB1giNkAENa6gspTKvUmHF4/n 80fFjfotLku+6fQP/kUu6A2k+r3UM0//jQmH6d04n7SYts2C/igwTs0ywwEU1Did a2F1f8nML0kpQrU3z62KfHUg8Z+x2H8DCbFHyEfms/KWw56iaSHDQKrotvovkNx+ DTipKtPnVqbGj2SqadT9EdOpVqpbBbAb84hksnMRg1k27Zp9Sbi+h+lJC/1k49Ky 2/QPVDK1A0A1+va4u6iA9/D1Ylb10LyAuhOWMupj3npRXgFSqcDQteeswz1dadM= =5eU1 -----END PGP SIGNATURE-----