-----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-typo3-14.0-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-typo3-14.0-jessie-amd64-openstack.tar.gz 316425bce52be5876d6ee8aefa862ff5 $ sha1sum turnkey-typo3-14.0-jessie-amd64-openstack.tar.gz 4d2a98c422fb09dcd4b312a936c86340841e9f5d -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG/AAoJEIXCXpWhbrlN1FcIAJsVqHYUlCSeCJ1u1s9PR59f HcDFJkEJmaphI3cMmeo7qibsbvzWiRFBmI+1iPqRGqVtvF4CbnmD0rMdCTgUdlTv TqwEXudmxOTf4OxMemj7aebX/OOO3IJJSUCAJDeAgv+m2YmfZV1cyT9bzxINkXe6 Tfg0Pj0liq7wenbIanx7CzDXvD0e/vrK7+tCsdnm8YHIytY/eoOUvk4ehUgXupks 5EekjhcgQTMwDwUsN1/x9yPK+OD/LT5aOB5nNRQrdofCBr7Ize/1Uc0aFE6M03Wp cnk9dA3mv/tgSYHirO2luyVuzIFxEoKbag+mpAio/+QXyEYZkoB74p5FlU9e3gU= =Yv5d -----END PGP SIGNATURE-----