-----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-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-phpbb-14.1-jessie-amd64-openstack.tar.gz ec19817b0015abf6ac297c9cfa7618c6 $ sha1sum turnkey-phpbb-14.1-jessie-amd64-openstack.tar.gz 757a093080ed21d1a4dc91c6d1a4ebfb7407847e -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn3AAoJEIXCXpWhbrlNvncH/Ajn4JWYtuHwEAOqjCu78bdA kUeeiBWMk8XN4Xr9nuGH8oRuqnJvZYlfIFo/NXKvjMrA46r5EpdfXpYPvBTh6wUE JTwAkSRa+bRSgfCzwekFpgGSkx7ZknbSqFp3RudS7UvYMmGLilzw6d57bG12Uf1G Q6pP0QJhXXjUhVAzwRVyUdY198j+RkdJnTvMeG8EiuVzA+wzXZt9ZmG2Zx0xdCho CXAWYdBFdcSIQA3GVsMHQNtna/udy2Lz3Paylf5IVRfH8JU6H73q0mBFCEX27yO+ k9SZFg6pKdAqlefxnBGfBCATi28TvmCdPpNZTTz9oFdPvVL5EJp+Eh/uFCULtDU= =9RGA -----END PGP SIGNATURE-----