-----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-sitracker-14.0-jessie-amd64-vmdk.zip.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-sitracker-14.0-jessie-amd64-vmdk.zip 04c52b233c125f7feaa00d57dedccc5e $ sha1sum turnkey-sitracker-14.0-jessie-amd64-vmdk.zip f7b557ac02a8c7162e75af66d19a29f9aba5d19c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdZAAoJEIXCXpWhbrlNM1YH/0pbAhhh1TzGeCjeL/J5/l6a 5QhVdMej1xfPtJRFU/GD3miMPNC9V+U2Oh6wDIfhYm5CpgCUamEca8CmTakM4oAj 2FYa7pNcrz/Bw+kMCnoghY+y+KrZ2BSw5qvtsm98MO47FIC+p/w5qkxJ60+sYdUY zzmT5vgXLu73VQuUGEDi/Wgi1xVWMXDbGFIG4W+PjZjIxvFtsaDBNktQSYLg0lYa 2P8RO7I5KzMk3rbdY5+2XOl7s63EbO4k7y7UYqL8aNcZeDoS46zxuw7VNz/IcVEO pmR7wgL9Z3+3Mpgj4Oqouw+Q7iU7R5TgHR8gX+jZscWMMAlyZ+ZvI8+70on8MqY= =kXi0 -----END PGP SIGNATURE-----