-----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-mediawiki-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-mediawiki-14.1-jessie-amd64-xen.tar.bz2 c0ceb6e168c8cb2ff00dd38df77ca09d $ sha1sum turnkey-mediawiki-14.1-jessie-amd64-xen.tar.bz2 0f204ef60c0ebbbe4db663b10957f4827e67d2a8 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn1AAoJEIXCXpWhbrlNo7oIALQUjKEyOrQkLqhkpJXdiJlq NYeDaj9/apLImUQjKLHBx8+G1dv7i9PFAzSftKLfVfx9HETmiOg8RSQQd9pT5cU4 bREPHKhmuznLhsrJqlyxzD28dNDScy3pXsF6tn8smWEE9pccwO1cMTigmZa68Jie hoHJzYJsqvNriYXpZ7aR3q3XwPZP+bD0ukNlxfquID43dWOiElvYKGZnItAYrt/R /gVY6WCZGtSDX+y6HZXzC0gTAfNlmwzZwVaxTffkSw+hi2B0SleKRUz4/bjWwpR3 d/TJhnrT63c1t8SP10xVf5iRwaesyZixxB+Q+7ezAZJTVUfKEATPDP4HFvi9d6c= =gZc1 -----END PGP SIGNATURE-----