-----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-sitracker-14.1-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-sitracker-14.1-jessie-amd64-xen.tar.bz2 85a0ab1ee2815eb9b09a9488e05d44ad $ sha1sum turnkey-sitracker-14.1-jessie-amd64-xen.tar.bz2 04442f295bc6dba3db5ac2275f9106ff4ac61dd9 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn6AAoJEIXCXpWhbrlNZ6kIAKfLSarDDNIttAMswQldwx7f HzTszvrv00MB5oFUhf/t7/iSTCM6KCj93sRfIaZMux5r0t4OaimEq5mSdf6JNvpX mAegA/0cFM8ixm3R3teg99h8DZymhthbw05U5jAEFhOaYeFAq97JiSOZefpsGWci NLZD9o/9jf6QMNvzBjTNulHQmYFUXdWnbMcQmd6XGDDxGN5hX/4UrvmIAElrnT65 NCKOGqfCJZlo2tYXXRwJsazja2XgFdTQP9NIWhvj5vYoaUJoFfnzrRXDLVoEULe3 ZRU9YNaFsl/3+OZBfz1n5w1YEckBZj75pcEDV9bGLzZqxb8SEAldTUceLq1px4k= =kmdl -----END PGP SIGNATURE-----