-----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-b2evolution-14.1-jessie-amd64.ova.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-b2evolution-14.1-jessie-amd64.ova c4542ebee22b6d4b7ee2113793e4a5b3 $ sha1sum turnkey-b2evolution-14.1-jessie-amd64.ova a76eae2201aea8bee612964304dd38de323a656a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnwAAoJEIXCXpWhbrlN8MYH/Rh9eL1INpKiT1aQANP46MkC q85eUfwwWbnG0nti4//uUUf7R0x/2ZFC7UT9d9p9KeBhUcZCObJgYB1sLH1B+Lbt WOgxTvZ/BE0b5QpywBzkzrRyYRosiHOyGPGrFqqWs4CaX4ou6dZLMECa21qh4Rbg fgOXzS+2by/8LX0HghlRhkRSu5oZ2+DJDJRiu0B0/NWR8c+e8/3EA2ecJpRK6qkZ Z1e++B/TwHE34lTAZPw+VamgqOstKkdC5NweB/x+bYv7VECIs37xYMX0+aQYWx1B 4jTG7u6vdShJhlnPRwxZb98E4ppoGlgK8Dpdxwl+TdoSSdIjkaugeivuJqGmnwc= =dgg8 -----END PGP SIGNATURE-----