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-openldap-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 17:35:31 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum e301f97d7985826ee9b8f3279283ebc6af855168 * md5sum 96779b65b0f03e2c009e19b06f4246c9 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) iQEcBAABAgAGBQJQL9JcAAoJEIXCXpWhbrlNtxIH/AgRnKgs0szy5MSFuShA0p+r ByE6/qC5ooOVgstIShGaio5/EGkHcvr7SJrjBpB4MDLrMlo3z4srMr4/hJzBXfrf jugV9RBgdkKYn7l3TJ1crN2jmmMyjfF/4951PQYEyywNNxDUVCHllWTrL5JKHwW3 EVtwkyV7vEsjoALMftNVX2feAi/H/y+5Sb4FATQKg+6+5XUL/R3m+HVKzyqXTI9B Kev1Ky+9x+8PLM1ZWUszD0B6E/OtZ7oS25FSzn5vlHs2YyopyXEV66RJsRXg+K8I tdC+r8BICaxHJ2bnJ76vkY6TfFZ1PiZuyOHlURTGoHC6rtkR3OipX7/lSTlgU7Y= =nq4L -----END PGP SIGNATURE-----