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-lapp-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 17:37:11 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum bdea310921636b1cad8856065d6c2e867bc0b1f6 * md5sum 60c05038ad174680139b8db19fd83cee 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) iQEcBAABAgAGBQJQL9K+AAoJEIXCXpWhbrlN7zEH/2mx50GyvPSSgDx2wOHy+plj 94He1Ch6iJg4yGc2n+opRCKZQ2et5xeWCCWUB4M32yFSdVGImOOowxvVVN9kyPqI OzFbtcH9CRCDYkXGpTfWCHyu63lzrKv8h/DD10J1FPoNDxFhwBi2R2yPJSiwMTxY EyEygqyTdS6mmZN/iaIPd9n8IVU8dkofNdT5KB9Zpj0ruqJaWXs3ghL5DxeqgNVy 0pA9YQ5DuWGOvR8dW00t3X2i4N3PeE9wwr2/H4+n3HLF3uw1Vt6HiNObe+cQIj8C GfU4/5iUJaRVmI2npQYNiOPkf4FCteDEVNDRWNBYFNTM8Fjf/+jOdOQNYdWYh94= =wIZB -----END PGP SIGNATURE-----