-----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-silverstripe-14.0-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-silverstripe-14.0-jessie-amd64-xen.tar.bz2 64d2be97ebdd1f1093f6f1ba32f3fb41 $ sha1sum turnkey-silverstripe-14.0-jessie-amd64-xen.tar.bz2 a4367aa54d70630901725da2566b1c24720493ee -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiCAAoJEIXCXpWhbrlNw38H/0NOkWC/AGwXts/eLKrdIdfU gdDFi0H30mjoh5CKTmPvGmddj58CeN1qDs/07hrGhD6jYTWi8sHNS8i3rlYmyAwF toWh5C9uRGYXAjOij5p7tn/o0/mpcSz5UlyDcLJq6rjXjnyaLkkJYUyLyoVLQSEg 5z7VsrbDXTBCJU4YHLpfEN7TUcue6Tw71+yPNcPJH0pOPS+urkKlyEfWEm2jS2NE 3RQEP50QFD5mweWF3e9/ymzhcgEQSVRrWCMJFD2j4DbTjebaAy6POLUqOO7ki7iG BtaeCMGnm/lKVyhvb0kgdI3J8W+3IHmyaBBbdGjpon4vfimdIfIZx6ygDWFDISw= =JrYc -----END PGP SIGNATURE-----