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-ezpublish-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 17:06:02 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 6597c2a517d541651e23b68cd4821d9f3ccdb91d * md5sum 839abb6ac21ab41ba477141e4cf2d25e 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) iQEcBAABAgAGBQJQL8ttAAoJEIXCXpWhbrlNaVoH/2g16hm0vCPWmk3MD8oRr4fn ZLkhwE0O8hWpqRkE6bqumV/UJHTy59xe7M0wehu3PhvisYH5rWV3Xeym6QMQyW2B I1tVXKUm9EfvO2WzQWFzF/15F7gpGDgJ0RWjDosfwxbf+9nJY6twkNATtg/uNelQ KyPpjXoQd5EGlLJYp36LIgns47os3Y+VV7kugftxKO/OmRes31H/9iNDqhehX9IG XEfbKl567Z1vqnaFgTu3ZQGkYvY+Rjr3fdr/rkrq2KhtGHSteXwojlV831a0608j nqA3oqFJ6FKF2UTepDS3k7Ffim5+los7FE8ejxktT0r8PsGzy6COqicdPwOLYBc= =eMSw -----END PGP SIGNATURE-----