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-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 14:59:56 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 4b6cf25385392e21fd0fcf69a52fad90491a7d27 * md5sum ea7f1537137bde097e024aa978180496 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) iQEcBAABAgAGBQJRrgDkAAoJEIXCXpWhbrlNKa4IALXzHMXNa2WivynAzw/sRP3T fh13egZtYhDQn1Bz0SxMSQ8LTOuSJysahLesbdb1XsbX7A00BojfhBNBIIvkUeXE 8yoRFdycKtlerBpVT6gmvFnYV9JUB3PXAJlPQtinowKOLxv7j0DwmRdNLaDy2SFL +BLpR07l+z41Cu04wHwNMhLA7ewWIH6JYVl0HZVBe7Et4IuqHqOay6KKLTLRfBy8 9J9SzFVKjURehKk8FsGM5nizlzgVtWzk24JildX7yCDXZWF9+jGddTS53YecaOSb 4z8ikEKDi6GWlfydmF2AJauWn3QGtwd/WyHgMp6KatI2zNcGyxxFwVTGNM9Y0dY= =fDRx -----END PGP SIGNATURE-----