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-pligg-13.0-wheezy-amd64.iso.sig gpg: Signature made Tue Oct 15 16:09:55 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum aef9dd82d903fe0a8442bfe8001086c8c2d60db3 * md5sum 04d03f31dd570b850661cd9b111b2a36 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) iQEcBAABAgAGBQJSXWjKAAoJEIXCXpWhbrlNLSYH/j6komh2FKVSvYjqxeEBcON6 sddazI33BSxXNrvoWy0mozjGayoFbxg++2wNQCEmWGFqxgml3wCHkFgvYPi661UC bmq5gBKD5SwQngaq7Kb481Y6udZYp10dDsIVONygdbCUIWg/lGWvRmLoKJzkdMBo 3SYPHDY6Ulo//MnvzmiyfNUDt7trVbr1V5g8EFYqPKlrFVp8TFgxTqCRo8kV6nN+ 0TVyI0evNoCqToItZnR9ymEljNfESuHIA+FNpK0BU1oDXmgWjDpMzSPO55uryFcY YRqzk3ucKiHpuB7AWo3/uVIthtS9jbvhOz9S9rQUxK6oMtfKeqV/X2lFe7gR+uU= =J9zA -----END PGP SIGNATURE-----