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-mibew-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 17:54:54 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 3484d4cbfffbad35cf25aa6b7ca86cbc775110d6 * md5sum bfabe444c6393ac014be022b93fcbc5d 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) iQEcBAABAgAGBQJQL9bkAAoJEIXCXpWhbrlNlv4H/2op1bzjsYOzu4GyVOzTnuLO hMRmvlwghGf91LZMPDZEoq9OBa7JYcC39jy0Gqep0uJDw7m3lxeNIK0Ut+S3ES6u NeGTn2LmivQH70QOQ02ZRlCCvLL55mlXdnAb0p9hOgdLuvv/biZZN2PO3ujWanVk m448VIsrjirIeA02iollETERNy8FhJEHonjKZezcUkCtRRA50Rdz66gYPrQ6QOkx zy0U2uWOVVjX0KkjIcRZV2I9QETB0s/wAGlCZKQOlhDIIIJmNbdPEFTuteLY5tT7 yv8ModxaqxJsPIWZVvWWGqUP8iYGgAS9VrEjLWWp/cugJn80C24fJCwFdeIUAMg= =NsaX -----END PGP SIGNATURE-----