-----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-gallery-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-gallery-14.1-jessie-i386.iso 0743594af1ba105ca19689306f9a52ab $ sha1sum turnkey-gallery-14.1-jessie-i386.iso 0b512cbf4b0940a12fa3e1428dd2988aa9400ab9 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPxAAoJEIXCXpWhbrlNLxoIAIjGNyjQgezfT9xKGkN2n1M9 onOHRGsEe2WRrObAJofwO61nl1vHIR/MGoU9YvMJWtH1ZWjMA8TSOcEoT954cljT CtqHbCe8j0DL+HB6yy0KBAun8fW5DP2j5lnjgOuRhtC+fQGGsKAr2EALzlIyCuKx HN7VKQf7vsjLhyIXELjXL+qxahtYR/YlkVQt+Sr16bpcUShv4zseKqCYyxmChQNz Ta3nZ0wgBE39Nw+eslSv2wMRLJ4zwJrUiRIq2lN8RgHMknWyKdYtw23y/e38GMyu 3kglOSF8iXGdlKXYwZb3PqhU2/NYziAh3pWg+r5WeTML/iXM/dy/fIGXYXDC/0c= =Ktpw -----END PGP SIGNATURE-----