-----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-drupal8-14.0-jessie-amd64.iso.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-drupal8-14.0-jessie-amd64.iso 591a39fb836234e35f5282ffa09284c4 $ sha1sum turnkey-drupal8-14.0-jessie-amd64.iso 460678db6ba5690477d11406c19574ead826b262 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BroAAoJEIXCXpWhbrlNu8gH/jr4+XN3hetsFgDb9tiroDNV sElvTZsX+XNgL8LD+BV6CeezfahnI0895zQDSQe8jU24kR+eq5Ekw4UzcuURlNu+ u2HSX31xtLcg7b3kODO495KgjQ63WrigbzgpFm/NmaBl7/6SKrHcGoPdJ6+JgE/W IhiBbM1oHYqHkwxwveKcs/UTICiV22h8TekiVs3QfNbvm3vPGoL+UKfYHytfyxTZ Gbg3RH3F0XOVINlEjjbZGVVlV8V43ZOvUj5PTErQl5egldNOgumoFxleIQ8Ev0jD dYkyG3bzkaRCpo5aI+Yjn+ouxce75mygzBj9Pco4J9AoL43A+Mi1ImrddQzXbl4= =jbke -----END PGP SIGNATURE-----