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-collabtive-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 13:03:01 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 11e60d7c1cd1911d4d107604c5a87540c5c342e6 * md5sum e14ae8cba2b731b631ac24931be2bedc 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) iQEcBAABAgAGBQJRreV9AAoJEIXCXpWhbrlNNbYH/1wsz53lTVGOTY/JIFHhUxZF ddExwyxu7q9eYirWI0LGPBLyhTjWkJPIyjPS4Rj4WvumcLRguci/XG3FozZN2btS TtU/LSynvIsOiy92R2UzzzHyfrMPnDTPOzcS1GwDvscHaol7SIZAjaqqdzlU5pZp cABdoWi6wW/EVuspniEFvBnOYUfHNUJSXQ9vm+QH+YyWJRHo71RZY+YP5uT1iffE 05VsJR+empGRSMCEIAiXw96eh7WJCedW/qDVMEQuGQUSud9T85yd9lMDb3piLPdL Cq5m384X6KLEK4rKZv5i0H0jH+sEmSqzhpCnas32Lrn2yve/FAIxKLgvCUrUsqE= =iD0h -----END PGP SIGNATURE-----