-----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 debian-8-turnkey-domain-controller_14.1-1_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 debian-8-turnkey-domain-controller_14.1-1_amd64.ova 81a2ce4ab814e8f6f9f1691d8bdbf13c $ sha1sum debian-8-turnkey-domain-controller_14.1-1_amd64.ova 4654616fb254955be887083076992d885e8e4ca5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnqAAoJEIXCXpWhbrlNVQYH/3UiQQwDG7bpq2hHerWVBTS1 iR6EJg5EIDbYe1Ec3vyjMckmg57/6O9CciykomMxv/ErzJeamre4plxbFz5xoKKA OjKW+2QBKDrNCH9ORNa+3TrVp/8HI1paF0Mc3SGXIrNcah82wGylHSSQ+lfoDvQz U3eRT7ZrKBYQSHWJ2Hxo7ZwMWh+O352ZTONlXmjcAbkF6Cn73Q7hno+UpPT/Izk6 iyXSn9UCc1lokLD2GLTavFKTRQMq53FaD5C1WtZEX57pAPTZb0fYFB7mXQ/yPUrR lzdcAjK9+zQKO9Ul0fddg+oOkDRT5P4sbH7Ir7eRfaONyAOxCFGeWoTYwrj649Y= =QYTX -----END PGP SIGNATURE-----