-----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.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-sitracker-14.0-jessie-amd64.ova 61b51d981d975efe48dca8ad2bad3a7b $ sha1sum turnkey-sitracker-14.0-jessie-amd64.ova c0182365d97776aca97a0af9caca0836c66e0a30 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdZAAoJEIXCXpWhbrlNJq8IANAT8MakZVjBEFYGiuGY3Kjc ndk6tC/EV2zW/tjoaXjq8dSTwfiBeDNl3fi6aXVato4MszP/7QG3A1jOjAVxcara 4xTTkGO7R01nynks/l6vVb5G15FkrxylAvph4LVb1IesXEDZ7KXBlTnN6ueu25/1 0MFOiwDRFe6rgcoFWDRd/0yRUvEFlb+dw6HNVAsOHvsNnJKAYPZMAMvYT02uriFA c0NrS+f4OFmMeEt/kB5KPKUkWwhGagmzjdPu3hXjewLx7CykEv2DQgVpOhlv/A6K Eu7QUn363k32QrvoHfY8N4KWjC97D27R97wDS6SPibb7Td2Z8pB0LVajj2FZkFM= =wCmb -----END PGP SIGNATURE-----