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-otrs-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 09:48:14 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d7a4eefbf1a7f71925b4daa18b0226c24b6571bf * md5sum 925cd4aaaaa4c8f034983a50ee052dfc 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) iQEcBAABAgAGBQJSXmDUAAoJEIXCXpWhbrlN2JQIAOvQT5h3Wei0OUwFjjtyaSOH KXlq0UvQ+0BcaEmXMdgp08LRhgzWmL+gfxQAWu4oS3ptkOsyIn2bT0mfEZDC2Xvi /3jwhV/mqfy1IbUWZXAIsGUoGYRsG11UtgubflQMlrPlcPSuESxVe7Cfjpp4GPQ+ qhf4HUIW0WUSmWK+rpoEXqpaVnTY3BTa8+/qiFCDYMWizcKgS+t3eVCQWsYTJMK6 ECmy7av5jwdoWDzAtY12cGUgj6afvuME419Kwn6Tm37WInMKIFW2Sg+FI0GLHKc9 7tYR3QKOQkxrgijmn2YNRCKobjUuBXXQKv16As4ZO9IM9c2aOfRbCx2c3CwK1/g= =/ns8 -----END PGP SIGNATURE-----