-----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-phreebooks-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-phreebooks-14.1-jessie-amd64-openstack.tar.gz 647d20f111794707793514c25ef5f0f5 $ sha1sum turnkey-phreebooks-14.1-jessie-amd64-openstack.tar.gz bb56d8cf058280f229e89fbb865196b5428be91a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlN+AUIALIgAQskBhfG4xgNjzEpJU7n KUEbXfcLVEO0okAu3y3ioXRBHSHdW+uUcd89VwacUqiOMan5KWps25T40b1xGzPK iwdbfooVKDiSjNZ01UxecnBgLSdc4MUpO8cn09nhVRVhYx89d5nYzJdb9kfnqdKT Qka6kE+K2O3bObBvLttluXc/cwBxVdfm7/Kq1QVK4rKvNb8LKkOXlOFUPmPlF2Oi 9gzBKhTAyOCQIdfP582xCEP5tWS59zsousu1U84yY9FbRZ8iv/UN8ZOotEChILBK pAJO81ugwvoxDyTkNk7o2IyRDmM8M/TJxO598E3OV6Jte8yF9Uj+6BO7s4+UcU0= =l1IZ -----END PGP SIGNATURE-----