-----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-mantis-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-mantis-14.1-jessie-amd64-xen.tar.bz2 647bbcfbbb65457f5001b687a7803cb4 $ sha1sum turnkey-mantis-14.1-jessie-amd64-xen.tar.bz2 ac550504a0225916ccb235f8acbc29bf4c0208b7 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn1AAoJEIXCXpWhbrlNfPoIANwOohx9voar4VnQZ5tXI4Al uDGTntSgiQCRnCXJnI3ajxRY9ioh3nvIeJXr81lfW2gqZxm/UCGk1F0xDlXFNCJf /2UvE8CUktF7eXE6yHpQoVlApzG+ccLg3mIkNuBndG5ccduWbOiTaFSiekov8SFH XxtxwYaPEGjBLIXYnIUIf82Aa1SMpKTRrxhu/5c0ag3ysfxFfSjpfXfsdFMyj19q +0O0uAU1FHDjk1OFINylctaM1by2Jrhocq1QIIIRZsd3OQtcxpkv60+2PziQH4wJ 9GCpf/p6F8KnZTmeO8ojK9wqe9oePuJjkLCyvNzFHSa7vsc1p8D0m0XBcuJPp8k= =NZgQ -----END PGP SIGNATURE-----