-----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-observium-14.1-jessie-amd64-openstack.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 turnkey-observium-14.1-jessie-amd64-openstack.tar.gz 5dc9ff75bf28a3294a70c5b8d10d9dae $ sha1sum turnkey-observium-14.1-jessie-amd64-openstack.tar.gz b9991fb664189fdebdd9d89d41c9b8957c4b1c85 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn2AAoJEIXCXpWhbrlN0dUIAIGErBNuHz41bbkHJiEJ6VEb feWygyuzh2F7vZVDz6ie+b/zJpDL37KDWMZ6uLEARr0txjNZLoqyw6i12xTZAr8B 0cNjzG/pQ1YesvRJw+xtBv0NXuxzhFB4tzwyAphEJ7L/sVqsFEjM/kuWyavcjPcs dWioYeHwfsIzT9boErd7uIqf4eHdrud4ReKORtGi9v5HMh3WcA+l5KBmGSc9j4Td QtgN8b+5bWPlqh80syQddiO90PpQHnNdOVg6n6GE/rEhKO0NaJiwP4x5WNFgHw+v njH8RZIEJtSzBfVFg0kHAgBvUNFoEkfs9CmDTX0k6lJEvSaDkidDH2cVsw7E320= =8JVR -----END PGP SIGNATURE-----