-----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-zurmo-14.1-jessie-i386.iso.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-zurmo-14.1-jessie-i386.iso 7c609fd2359f643ae30af89e6fdeec1c $ sha1sum turnkey-zurmo-14.1-jessie-i386.iso 8f0fe1cd3211796ca0aaace9b85f53120320513e -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkP1AAoJEIXCXpWhbrlNKRYIAJcA0YW1fQDx4AoKZKRsWkRq Pm/fPrzE1cS4S9a/WeGXlWPDdg8xfqpdJmPTFT+CI215Im4Xvr2NzSuHb1a5chwB GnRcqE4yjXiM3XB3M6H8XMPURsa79B99qciyF3o2hRn5XFz+xCv4wFoLS6TJMOPe Fm72N4dUwI78/VarCKGamgINwIdHy6wiDW5OSkpcQVrWKBt8bCQdzxsUnVrS31Yy YHTDnQymiTSArqDDxfqojnmKQRLP4iX7oH1EQaXHozk8pWQL7pOat+RW1RHyT+uZ rS1kpmNkVkB+BNGDav0ZAUBFT6/tmtVzsuO9s2TDrVzAObViz8vwHvj37+ccvGY= =s3Yt -----END PGP SIGNATURE-----