-----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-etherpad-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-etherpad-14.1-jessie-amd64-openstack.tar.gz fe8591e7a7c0d823834d8438b0767017 $ sha1sum turnkey-etherpad-14.1-jessie-amd64-openstack.tar.gz 44fb5075ee7c490fc4c97aca9edfda5114d89ff1 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnyAAoJEIXCXpWhbrlNebYIANmJv1cIKUoOkIYrvu0Ji+MD XdPnmh4hFYNBRidjXDZX+f5sVehsC0FcD3CnWFLju4rLTj1b4A0U96d3WNk3n2Fy 1CDWFoaTVDc1w9roxtqXvpB16OuOJhUpEo3pG0n7zMlWGYxfVrLQP1ivMdp7BiPI OcxqfmTigAEXuLSvtXYfH6tbtYGh1Fip9jtoScIEp4ZNsqyOnqoXyQ1lJIxtXGxI vWIniFOjvwrRKYwgN135dcXN8YDKTKOFMZ9WIkkHSnVc8sGfu9Fdg7mctid/FVf4 6xSdWh7OQMW7FxwCYkvYLmj825NE82dUK8wMwxVojI24RM8oVU9HE4xfCc+Fj94= =5OEl -----END PGP SIGNATURE-----