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-trac-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 16:33:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d39214b748577e64d588c9e49c6f5c552788947b * md5sum acaefc8d37d259ee9aaf9dd834376a9c 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) iQEcBAABAgAGBQJRrhbfAAoJEIXCXpWhbrlNqIEIAIfMVerM0ZtXbAQc1GsPTWbl K6dS7awDluHwi70GfTHwZOcdGt8dlgbla3wwHIlco11DAn2i982VPru+XdXBZkMW ZkibJtHQ9BGdRKHUeJG0chma2tjUo9xmU/PlWAcTsYMdF3yULivo72S5U1sSVT+M vReb5jxgbZvnHjONhCwA4e+lss0LC8Jp0pQIZWoc8KQk09NBGjtPDQgtPLpnpPRe YTFmnRGrn77Zj9uyYZhgQ7KOUbpBBQmLK2eiLGZBJgjSDZoR7MKRRB8T8117rfhb ZNiu0tffkL1qi1XKLCf7ywcPICjyQYuZX1iQmblI+rypWJM/gxTCY15AFufkQQY= =DtVx -----END PGP SIGNATURE-----