-----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 debian-8-turnkey-mantis_14.1-1_amd64.tar.gz.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 debian-8-turnkey-mantis_14.1-1_amd64.tar.gz 7d16795241023ff165c089b7d2670292 $ sha1sum debian-8-turnkey-mantis_14.1-1_amd64.tar.gz a21e60975161704da36afeebf8b5710db25aeeda -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnsAAoJEIXCXpWhbrlNEnQH/3EAX90PCRiU1xagf1SsWI0Q GqSNeAI77ieHAuJ1Z7HFOiWbBpWzX2lDHeMfMhjwjHVrBmX6IjTXB/99BYBgmAJN L0EiwaZONhEUunZFFY/gxS+rt58L8sPea9ioFoYLnTZ/775FZ41gOrTRUSH9uVER 0RzzmHoLxkzu2UpDpXx0J0/zXeZF7VaHOKqpTAm9nyOQ1KfaJizxx4Ic9hFFc5C8 WCyh1UovDqbZR+nscbWI+dhkTThslNYd8/l7hoKOW/tdU3jvzhGNLYS2LHs5QmUt 6OkrSvfmy3sZ6fjgJ93HshCQqnKoFtvVfou+cke1dRmJ+G+9y5ws1xLrNFATIQ0= =CxiI -----END PGP SIGNATURE-----