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-mediawiki-12.1-squeeze-amd64.iso.sig gpg: Signature made Wed May 1 12:59:43 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d1792a95919ea9e319fd6da3d604b5ea88b3da33 * md5sum 5dcc7b492358e379a10d9393e97b12ef 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) iQEcBAABAgAGBQJRgRG2AAoJEIXCXpWhbrlNwesIAKbsSrffBzmSzWz6EoMwqW5L eKZ5xTIXbkL6kOPdu70zJqBJN08vzXsbHsyjvsHi8X+RnGn5KI3bNpQ/7GyVdnML DZkQut/AzE4a8Pn5Z1QAugKgoJNSEFV6avGXBZUTMBrY0B6EpIZjO9uO38ga1MqC BgmoLe59/Ai1tkz5vySHLRWgOosS2jKzHRW9MBMkdIIp864ZRWIUt5rou+K1OtLR gw90lRSG2S0Ylm/DQTmQn0xe3N8eJLJvDU4xyIaZMp0eo0siTRSvIY+CQ4lp/tXU 635MYPhl/hj7qb+B1s0Zlp7ywTfZAjg2uwsWr5+MDpjJynoBp84cXv3aB8h/2SM= =gpFm -----END PGP SIGNATURE-----