-----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-phpbb-14.1-jessie-amd64-vmdk.zip.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-phpbb-14.1-jessie-amd64-vmdk.zip 76c7317d53926c2910eded2da4693d09 $ sha1sum turnkey-phpbb-14.1-jessie-amd64-vmdk.zip 6b7b4613217f80074cac3df0c71bd65dcf2035e5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn3AAoJEIXCXpWhbrlNPm0H/iBzONfvrcXsRy6FbaOx5BQ0 3sqXODJZYAOiIVw0/vxSlP60i2jGohwHryXno9X57Nc9JeFm7W08ufHpOgluWR7b O2N/9NU5nmgxY6Gr9u0OQk9MSA+NaGesdhItENRxsJ/dqLLv9ZO1MQcNM+yx350D dk7gA2/6Gin6KIP7uFi6MUCTUbgcHUfm51pE6WSm17nr7b0X0v/16v9sVAbLmkmY avcp/XZkbU/x96JzQjGC+7hF+9Pzp/XK1+vAPoyTh8ybQH/Kq/rvQjKiSPvmAGDv F8KSM6M3/GUpbS8ub9h4kn9M9+7vctIy++NEogpHRwePTlnd1e6yfvyR4ahNnKo= =XqRS -----END PGP SIGNATURE-----