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-zencart-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 17:15:07 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 6e6ce441e12525b763ee48869dab4e3db78f872c * md5sum 8fd615c19e994fb1f2a8010f9897eccf 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) iQEcBAABAgAGBQJRriCSAAoJEIXCXpWhbrlNf/gIALU40oYjWgGq3YoSou3bAlJ/ Xf+7CeeHno5pYoHAVyLwA3WGxWfsk2x2CG40bDrLtILBjeA1jjAWdRhxIFaWXBpc ZFYmWl3DwGhl7nlZBbNEa1WMq+1fBEV0CmzW5JRgcDj5C+3Lt0wr7fy8/qsKq9yl Afx2dE9EPGWSqhUVbgMEfOai8YyciGItOxma/OOFIg5ahGAgNYkNIfKsB9ZjhXyo hgFaTYnr6RmP0LGFiN8PSTQRR8BUZfol0A1SukL5zHESI2kk+xsHaKn7m/5bjr4d vA1YHEps43vwAdfAVjaAv0Af5yloRwr9LGnucy6qUOHylPapHIpVWiYr+39gNzA= =boN9 -----END PGP SIGNATURE-----