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-tomcat-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 10:41:50 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 9136104f8e602d7780138025c00c536577b62a1a * md5sum c7ceb488a7a93130c28917937e586b72 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) iQEcBAABAgAGBQJSXm1jAAoJEIXCXpWhbrlNuJ4H/0wfcF8/q8RgDSjyNiV2O48A p5sV11BD2UWPTCc+lUFdrOFshL+cx3wzEw05Kspgy2+JQwISAN2UP0iOvgjbPBJy oIowCqsT2JD4mep5dGXaygl7wTZvxmdptIYWroh4UDFRuXliH9IbUnBepCwmb4F6 y6kqpsKYCqAm/frd1Y1JhbNfqAT0ySFLf8N+CtPlZRMOz9etJRcgYr9OltL/eag9 yXYNqlym3brIJCKQ42i/orNJ4SP3T8rHVr0w+TXsEvuOMImVbjvaqLjj1g4nNXOY MQL+aje5xIvbEklDGSJgnEBxqlN0CG9FdlUP+H1dfDyjK2ZfDqeEjD7f8PD4WMo= =Noc5 -----END PGP SIGNATURE-----