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-deki-12.1-squeeze-i386.iso.sig gpg: Signature made Thu Apr 18 13:03:53 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 16ad2c5ff80ea4dd2ef99748ed0232db7500bd2d * md5sum 2a874c672ff34104a6112e8c39c3ca00 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) iQEcBAABAgAGBQJRb+8iAAoJEIXCXpWhbrlNaJIH+gIyBZXnUmTYrdbjWp8U4kJB PpkDpp2TmORP31FWHkUF61MyV5LoiLlL6RkOTR3hsd4LY4OznglXZp28fNGAyzVS CYWxzmy094l+VF/WQH3YdcTxvQ/2tCcgm+THAcdKubs4zKzhi85IR7siWcUUogaB 6qdHU04KBHLMWQFdr5pGus9sL1yCN9p8/8oFLTgVv+IsKjiJ9GjU0s43AhlJJqP3 h7CQHjgyAEzlvIaHZFd7TVhlmlRiV1E9ikp+ZoSSTDij6pjb+vFev1r3IUPz6e1v iuZvk6j2IhZG+egwF14Ojhc0Ts4DXW06BGOsb6nJ5ULAp8qtj6jWqmpMUsvqGdo= =cZhk -----END PGP SIGNATURE-----