-----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-domain-controller-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-domain-controller-14.0-jessie-amd64-vmdk.zip 1b017f33bbdd422b29f2c8dd1c69bc6b $ sha1sum turnkey-domain-controller-14.0-jessie-amd64-vmdk.zip 77bd026a30f685b8b2806094fa6f08538069612c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdVAAoJEIXCXpWhbrlNku8IANEY7oA/sOxFa3JpNbhBU4K1 0Tc1bptbdHNbZ/wqIfkHwrFN3lLx2GA3J5ZAp/ZZ6FzhVWukiHyb/t7vILnT7sh+ 3QZhcW5izR0/2T3uRkC+6W10MYMExi2T7ZGAbyK0KjiMVpSOgbSM5vb+Gt7Ds4Hm 6LnWpHTmUGi8ejReK50pAcgInsKiuMSVKlfVfS2kwwSEKwDfo1G+bHEjdOnIQmBC nEd5GjNq8MuCnYNV9rg6Hto1two3Z/wvlmPPueXRY+qbdhi/HfHhPamyyHHUIbyK timkXL4g/boLcYVv8vSCYRbag4SyYh77+nUJBA64jQnVaRB7nbnSY/YIXslbwBU= =Gyrx -----END PGP SIGNATURE-----