-----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-sugarcrm-14.1-jessie-amd64.iso.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-sugarcrm-14.1-jessie-amd64.iso 9257fac8bd07867ebfec2fae6c674020 $ sha1sum turnkey-sugarcrm-14.1-jessie-amd64.iso 72ca932ae3f466cc94dd7bc8ab8dbbe5464611d2 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkP0AAoJEIXCXpWhbrlNxKAH/3yx9pJ4CV4Bx1ZDwni5R4YQ Xjiq2MxBEZI8C9aRdy5xKxHM9gTwi5g8erwYQCCvbbKv90eIb+egwYErcAFDec1l yzigrFWPY4mPO2ZS1zpcCGu/81rOcm+T0dq5iJ5yUP2MFrWUfeavp2jUwrD4osIX rNx+An/4eoSXv3/pcYaFEBbBsSpegSLBjPCHYL6eD+UqiJDxc18lv06fTSehCz2e rl6q6PpjQApIho7MmJvIvuZEhozkbTIEBieQgmgvTDCbskGhrNe3XowwrC1Fgkuo sA7ATD+kJxJKbyxYSK76EqPctmOOQ26RPzb6VP9ijV4+svNgO4v1jHZJpSpMCa0= =fFqt -----END PGP SIGNATURE-----