-----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-couchdb-14.0-jessie-amd64.iso.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-couchdb-14.0-jessie-amd64.iso 883490963abb05550ddc3612ef7325f0 $ sha1sum turnkey-couchdb-14.0-jessie-amd64.iso e32a39e7d463d8ca897d504477a5ed47b39f32a4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BroAAoJEIXCXpWhbrlNTKYH/jGkXYnMmGPuRcROch6oDspK S6fYaRJt6HWNKbmp+YY+ylKDFXdCcwTBwsF4wW0kGHp7c16MC5PZvyFtnjve0VxJ elR9OJmKKC19j91jcgYBlFEWSIkJ81Sx4JEK6gCQysAPCfj/QXJDP+1yELjvwteQ vBf+MRk5IMkXlOs3wrH+vq24ckBtqLuzeagiBVrWtLwwTKYKcySHOxy2nUwWmfmJ +kGxs1hyBxuZ07S062hxcRvFnyOeeXMIFmOnUY9jYTaMqABe1RXDt5fF5PUqMo0J sEwnSpGuZbwleTxqV+z3Hwv+JCyot0cOH7nZt5lWg9Vrxa6YuGnOQo9PMf6vBd8= =nySc -----END PGP SIGNATURE-----