-----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-tracks-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-tracks-14.1-jessie-amd64-xen.tar.bz2 b860d88de535c83ea81f60236c71170a $ sha1sum turnkey-tracks-14.1-jessie-amd64-xen.tar.bz2 9ba261965cf9769bf765c829e3af3674e25eb479 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn7AAoJEIXCXpWhbrlNN48IAIXgz2JI27V4eoWCttNh05mj XQLAXR9o1bhe9IluSmJAOzubtTEehl9CKksN7s8PBhibXLrhUHBzPnDGab3pv5Pr XEfl83kWGVe2yyN+vBBkmjFN47bTcqWTEhmCbrEo66uZaPXz9jV+cCRNxYArolpV yx5pbEfx9pc0Vnb3OsGjoGNQvdogSTc1K6iapVEUsBfyeIOnLmL9vyQNpK2UKqp6 q5bjnea0Z3wyObxo+FboeUu8Dxa033ooYCC4iAYH32VAhQPDI0AulJjERWDM1cSp WIXNLSNTiGOo569XK5FB9/ssL8BUEOk9/j7iWHaPfugAMmyYWiBMSsN+TgXUArQ= =xU/u -----END PGP SIGNATURE-----