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-phreedom-13.0-wheezy-amd64.iso.sig gpg: Signature made Tue Oct 15 16:07:29 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f7b62ff12e650efa0ad6a4f451c1ec348cd50f2d * md5sum 1f5ad70fe9c68487fee547f36ab31e73 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXWg2AAoJEIXCXpWhbrlNWXYH/2CLS4MIznf0i6xPNTfANWPc vmMPMakWEuf353ApCJmc2JwL0sDiKiB4AEwapSkG39IXqRmWRXRSzFduBLeItQ1P R3qLEyA8YUKgahUlNFUnyDPwIvO7sNvAhIlXQ/OtP2d/wkMTCvTFNXuaXe+dZPfN 6tzlJuWdC3UXqs8e46JVs7dvPX2sbwRPkqOjJ/KnmVsd8O8lasA+RpGNSYu9yvWp O2oG6QiGEHz2yk0Mb4T0d+PJSjBH/rAVJKV2NtWebygcEaaBM46P3MO8DJ3w523u aJL9FyCwylarUGwZV3eaYBzhuun6aeqX1RjgEv1Liw0iFCvMS9TIe5G8CR4+F98= =6fve -----END PGP SIGNATURE-----