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-plone-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:37:08 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 326ff042831a0fe09947d3f9d4ea00788cc4587a * md5sum 2f1e2087d5b7f73e023f215915bde4e2 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) iQEcBAABAgAGBQJSc3Y5AAoJEIXCXpWhbrlNXfMIANCNAeBjydBrbfA3rkEJ5ZXp W09tQ5sMMhvtrVwkmDKdq3m7yH96LuB0AiHuwbnus9kTPewqF/8NfaSMpgqQpbuD 7dc5YDSvmNQIz+Vz9j/KCWVfOzEvUz5QTYpvdRO/tj0LL9QaNZRfYrOWKcwfuIGw tgsvmvFihVcxZQxEOwNZ+pD9FDAzzM6WhbCzhLYHuIcWh+ohbQOUgX6WseNQgvqg ijBrmHju85z7qayBdahnITQ3HiUXBjrutknXtWGqXAuKgzKo4cMa4gLlp2ac1Xnc 7DMBuIDx/g4XmfEARznEBYIOT+rPXR2Yyt2Uh8rtq418CxapRC2iv5aYXjvVt4o= =AnVc -----END PGP SIGNATURE-----