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-13.0-wheezy-i386.iso.sig gpg: Signature made Mon Oct 14 17:39:26 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 378cb7b0268bdc5ff919110e7c48fb3bc1113a7a * md5sum 6b86ad5da8a11a79eefc5c86d27d83a0 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) iQEcBAABAgAGBQJSXCxAAAoJEIXCXpWhbrlN/rgIAMLYiv5ezSYGUHl7YeoKQbc9 BZj9VpFlJe5SMN/unGCmiMB4e0CCmSI+dvUKPePumXsixsruljzO5Mwt6JnbaE7O MiZdiHZ0QCFNs9hIh/4Ojol991ixKt5fqcKc6P2TLvA41bnkDB6FEDK4hXPcQgti ZLKT9kXWSv1/Ai6UmLsbIqWzQ8BcHepxvyarKxO7BcK87pBsnvdH9hGh4GJpRAMT jXmSFCxZA55bJEmEbxJRietKXlE4VGplxNdIK5UzR22S9VtaXdJqYZ4EFtqJ1S0s aqf4GI6wcRBQgCa+EYtyEVy8dfAnVcQ5E+i76tdHeIzktc4t1srocs2TXaygGQQ= =RQGr -----END PGP SIGNATURE-----