-----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-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-mediawiki-14.1-jessie-i386.iso f504b50c0aa6c23f8d52f790c40b77c5 $ sha1sum turnkey-mediawiki-14.1-jessie-i386.iso 2a5e16117ba8fb12f4e9a67b122eafeec711a841 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEbBAEBAgAGBQJXCkPyAAoJEIXCXpWhbrlNm2MH+IhqhTnMcXYRuudSkWQA/Q6B 3IHrtb07BQDYDzV+ecGtEpQhDuc+i2g/+HcUt4QelRRdS96/y76Olfs3hOeXReJe Mqwk+yR06YpsdGF6vXwRpcbBbE1+otTcubxpoV3TzwxlsX+4tcCeFbRJGzAfYzpc /4ICzyiETHju2HtfadxeA2N360diGaFZGOifKQBdrZycxI37ygRzxTVoc/vIX2ld bcE/8jBTlAYmTBNaaOghUm2BIsvNI3C6gIASHK6hFY9dqNV7yY+v5CNoE9jHdzCv MwJxUwdb5xro0WIR6yIis8LtCfyejmBJ301cAetyoI50ypXgm29I6DyYmNo4zQ== =WybZ -----END PGP SIGNATURE-----