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-moodle-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Tue Jun 4 22:24:27 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0ab1b9e57237308d1f9a33f6ac7886392e6b589b * md5sum 36487f78d75564adf4d9188b313b791e 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) iQEcBAABAgAGBQJRrmkKAAoJEIXCXpWhbrlNqfQH/jTznHFSbO3BOePyEfBM/xJ1 hJITIoYtLHfQJuJTrh1XSMgB6YcKRvh5qJjNv8huK1sQZL24DOgTR1bQuZ+Np0Im pd34/u1BTftZwWwyHcUBtdjNCjeb5oj2FOwjsYZwd6oFEjI1TFsIkIBr3xlXPSme d6Z6wK2coZTA9/WVOCTlu4FztyjxG/xpaPWARAYrptA+uUJC0V1l61aGmISCiJlE E2Q2YKAGL3MnHUgwOso1ED8V/tARpzGP+MF2dxScLJKVCOMmhVzCDaI9P4I3mEEq hAVv24S9GB8GpbYVESqvnXU9u5ci+ojwAFyfcfaPnI59hQdg+scIUnzTE8QnqjU= =GAzC -----END PGP SIGNATURE-----