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-xoops-12.1-squeeze-i386.iso.sig gpg: Signature made Thu Apr 18 14:21:31 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 499b8efa26781f6b368a0cd0273c3f3c73dde29a * md5sum db95a3c983d14c949bb547e3cb783434 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) iQEcBAABAgAGBQJRcAFgAAoJEIXCXpWhbrlN7akH/RAzOMWs/JloLmvBkOxDVFuz pF+oDFjs0kMpq1Q+o/cnSpHGFW2nIsWqkKeBBb6EmVxHyTMddHrLOIcQDIcXby2/ IFWkh3rhAVu9/MlK8VL8ym9XuvnPX8KCz1570fJ3iasBxzBUpbtTgutGTuqmCbH7 aXIm4QV4LOyufXU99Hfg8jcyRsMTAeR3s6bw2LX4GadyTRzTnACHPPhdRFc8Bwbp nn1n3MEMgdon7UwgeUvgFm4HzrseHTYf4z5wT++c9Zlg5WLbZuQDJGOzWTzzhZTd GWrA0jYkL+zh1gcX/yhP0j71XaLDKBKHB5ehvBDgBBnxNIUzXmrURaWtxfLYJBI= =bYIw -----END PGP SIGNATURE-----