-----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-bugzilla-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-bugzilla-14.0-jessie-amd64-openstack.tar.gz a9bf512ed3bf985c62d0c9b2759d6825 $ sha1sum turnkey-bugzilla-14.0-jessie-amd64-openstack.tar.gz 9aae5086164725f95f807e233328ef0ac9f6efe5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG8AAoJEIXCXpWhbrlNJdUIAMtIGFezgyswiVIfrX4lbJab 5nLoMra9WgbZj9COhtnHbvYNK9mh1iQQnUuncw25mw5oKrQIaNEhVUKKRR5NR3Cz hrI1kz6Ufkgezb6KD6Uee0bY0cB1jE+981ZF9IUJHRra1bKGYEL8OIZVlTeNO+Hx 5Cr3WrhTK5W62rdu2ypQABeFN10icwvOMkBUQOaz+x9puRy+cuIr+Zi9cLq+rUQu 8BxAOyJSToMlZj2gzkqLg6syf34etaWfbqcpH+hbTJSh/G+I7St+Oka1G0LzldTk O1BBu3Lsl2PHMgvqxJogxSDgG2cxLNWqpL2so4gMbF9VbNaM9OANdttnXfL7KEU= =A1Bp -----END PGP SIGNATURE-----