-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two steps are required to cryptographically verify image integrity. 1. By verifying the integrity of this signature file, you can be sure that the checksums included in this file are valid. $ gpg --keyserver hkp://pool.sks-keyservers.net --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-codeigniter-14.0-jessie-amd64-xen.tar.bz2.sig gpg: Good signature from "Turnkey Linux Release Key" 2. By calculating the image checksum and validating the hashed value is the same as listed below, you can be sure the image was not corrupted in transit or tampered with. $ md5sum turnkey-codeigniter-14.0-jessie-amd64-xen.tar.bz2 9bbb9c90b38b93f2ea383973858ae251 $ sha1sum turnkey-codeigniter-14.0-jessie-amd64-xen.tar.bz2 60940c7b723df152ecd1e77ccb1cded47dca903e -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiAAAoJEIXCXpWhbrlNy8UH/j70lNyDB4+hgRTFKw3Isgox DDqhzVE7uePaZm/zbdrTKOd/YnvvAhIZh8N1IF1Q/jtl/cbXHrPa93im01KqlitX brpfqqzgwt0HZamcBmfQ0sQqwkg+mF7osTtIzNEyqKECD3AIYvN0ft6wvbCrPkg0 EiRcLt/MNhU3F998fCNhhf10Q4yRIMFd79ODxG3OuvCdrgl8/9mzlfLTFMe1jJ9m p/6cOm/MZMMt35UEe1VlGjQLhuIsyE50ZWKePR8EvYkaHyOxBYN537m4eVIUseRx RqFY6SL59ADjyGkxlayMQNAzwrXSzPFnreeChH+QcOmIKR/AujcqPwmsiC/0Q4c= =km3P -----END PGP SIGNATURE-----