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-limesurvey-12.1-squeeze-i386.iso.sig gpg: Signature made Thu Apr 18 16:48:49 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 549036bbd2951a758f3d14eff0040488c72c3efd * md5sum b7ef5f62b5bc0e11e80569fe0284cb47 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) iQEcBAABAgAGBQJRcCPlAAoJEIXCXpWhbrlNshgIANEVvRAF3U+p3qREUBgJNez4 ccDPFf/qUxtPFwRk5CLVaIYD/ffYB8Tg6phRDHMD1aGKh6naFTTIJUc/2iblFbJ7 i/SofnxblF0x3WIFjcqwx6bu3UmrlH5W+woNbjlue4xB9ykMlFNjK+3dcVU1621G ushehAJRkERotYVz0L79lMT2cV6P28irXaZvklc1nQ8ys28HSnqd6xcnFDWW7Ry7 WLHHWhK0fZ1O9fUJF2DwLeMzV5i8TO6bCLBh+brsfk0HZiGQVl0MMUDtoSMu6Trv sPt+eaYBRmIt9XvupM1bUt10zhUcIPV2aWcG9JKxE0arUYKrAfUG9b/t/TIoYuQ= =FYW2 -----END PGP SIGNATURE-----