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-rails-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:42:19 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum ef1f5d8fe0b01da9daf83b6eb318e425b27bd272 * md5sum 9f1ac71dc86ae143599973c6752ec9ef 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) iQEcBAABAgAGBQJSc3dvAAoJEIXCXpWhbrlNZi4H/RTjNkDFwu1G/2lVvpbIQJqG gM3jMizNy++JEhs5PA7WqosD6ZZkhORchq56gsvAxkkaxm5fXpCTckpidjS0nFbT svv2xF9/VHvQWIBzWJaVLB2SNydm8B+4ybYaeWB0xC6vQnAZ0fuPyuTx6A9dBUxn KwcX2yppQ99D7zwAQzz7rwgmJg2F2Vgco7fWWgFxKrZXOb5jBRLOeC+4Z2MTNQXW EtZDzqdjN1B4oomN/+bg3emg3uv7vCa2gMzp5ZWohgMdl70lf4Y2HTYPE7NDaBrB /skYKQZFFS2aXm/LwB1caF0wEDtyrGc62TQiiR9IkWfFT+RQXhPlijKgp815p6s= =NVSs -----END PGP SIGNATURE-----