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-zurmo-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 18:25:41 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum e2b9988b05f727c9049a77ad858c57bc37991f34 * md5sum 661af06c87d9014509984c17de8dac42 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) iQEcBAABAgAGBQJQL94bAAoJEIXCXpWhbrlNuqQH/33tO0/AcY5ZKI0AyOFT6TXn B5ArRgAVB/G2qKpJPBQIE89858bfsgnmFgl9nUJ0enf5kT71EQQuzgap/8Bv12Is ZxseFup7VNttRmsIb9+zCvjiuGyIkCt+SQvEinjoinZSDgr7AE1QVdb8dUV5stn0 Bey4P2MXgjf4GjvKguPYUrnNMs6wGXfYP3jEAwCoUsKHE6KHtezua7TAvwO4EWa2 6QCKYDr+twCaY1VkLH7ShUXR9uIJY4T7x/kGyUx0ZOaP3m2CaDFHey9bWjRGZsyX JdlJzf7m/PIYqeyd1JP5S4X1wYsbWc0LCiOdz182Y/7I8Z4zNJ9Th6cMhl/aF7c= =iIak -----END PGP SIGNATURE-----