-----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-typo3-14.1-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-typo3-14.1-jessie-amd64-openstack.tar.gz 80d5fe806b25b042059f218e2cc3cd67 $ sha1sum turnkey-typo3-14.1-jessie-amd64-openstack.tar.gz d3505cfe3547f690ae743f109defbf3397b316ac -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn8AAoJEIXCXpWhbrlNBD8IALLd2qlPx7Jb2mGYjxv7LIEF Ah0lavcw2LTP1FjxoR1oAhiQN8t09rCNlZyOfClXtbGLr/X/e9DAsNs0aNbKeQr3 JmDkdjvpuVONn0IPzKNaC9XcMktm8/0uKcuMi2FRhjznooSLoojHU5PuGZQNNyxY CkRnoEI0fWK+mYnidGwlBES6vvmm8zR9m6Wdo7SEYLRv32Fh4vz1b2d/QYTWCsq1 cGEAgIzXwo07uRSydansxIWD5k8DNN84Fio54qnW/cWmCzHLFwjZ9Idl9fhUJhgp pnMjo0/v0BIr8UA0jx/SvLMLYJTdAv2egha6f6tnoWfHfwgT5lISyD+TFyMlTZw= =jtUy -----END PGP SIGNATURE-----