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-ejabberd-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 17:01:39 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 332bd8282e9c3b35bcab8dd022900dc72657acb7 * md5sum 17389b3683783b0bb80d11c381ce1e97 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) iQEcBAABAgAGBQJQL8pqAAoJEIXCXpWhbrlNyYQH/A1TN3Se/8TH661AkU8J3Pao K2tMHXbkzvIqN7DLx7Lwx4tQSnMs55yJ4d1BXOLyu4rvyFMo+AiwseDomH7MOivQ kM3qTTjk7lr0tneo5jjDfhdwX+wcKczU2cXMRJdtDMmSEPlgG1YUIAvJK6HymlS/ jQN67FSiGmVJm1UK7Ygg+EPr07QwjHi9pzcn/yK+h47xs9X03NsdjuRZMGxOX78h K4/LiVVSh+/N3EPuzkgUInqNaO8xClB1eFj4cLuxY7Px7754gZTIQCFK92uuNbH5 4KfhssEf3RwpxEnAHky9x9pd2E5w481EFuj5DKjSz5zMSjhr2Pw6P7WRFM/KEdA= =Ui4G -----END PGP SIGNATURE-----