-----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-phplist-14.1-jessie-amd64-xen.tar.bz2.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-phplist-14.1-jessie-amd64-xen.tar.bz2 a4a42abe700b80efa65e6aa276c94323 $ sha1sum turnkey-phplist-14.1-jessie-amd64-xen.tar.bz2 740e52e048717dbb7e9b135802b8c2ee4596fcf2 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlNx2cIAOG9OjO6ha9Lc+jF3fA9Dm+Z +LttFDwVRBdof0jSs8+bsa0DtWYGBTGKN3ImsCLqmbYqfPGQx3NcKbyKDWwM7+y0 HjafsIh9GkfXhlXzKMdIe6KfLO1YE7+OCyDAdec8xPbye0nqxikNgG6n8Fkj4TOS eGfRYOkIsGT3HVQYUdwl5fbuhBbIyUDR1SOGU7Z5amJDmu6dTMHb2fSsmz1sS4BL CYVg/sPqvofsQe71QkXQObXxE3T/loHhGXef5UHrKZhQ24RB8xO4mMG9eYt2GGsw SELFFFVjtiFTPlk67QRfzvIYQLkSh/aPBgzxCTk8129VfNPx0upPatonsIY3Jj4= =ixv0 -----END PGP SIGNATURE-----