-----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-simpleinvoices-14.1-jessie-i386.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-simpleinvoices-14.1-jessie-i386.iso cf57ce9ab882fed6de5bd271dcfd7367 $ sha1sum turnkey-simpleinvoices-14.1-jessie-i386.iso 613149d237508d8dd98a59a7d3d2e484cffb10df -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkP0AAoJEIXCXpWhbrlNXcwIAOuZ8BqkMhLvjDp8SmhA4Hjf J++B6imZxYpVflZ/vzHOJgtkwAJmIug1/iO5aeekkT9dTDGBhmf/KEhnny9ZR0+q hTq05mD7MEI01pUjvoeUzmpgNzS3A5Fg4g+1irdYv+0EaqjTEh2lm/TDhmcYWOw/ WLjLspOzpn6gitNf0yoy//zsJXMr39MsjGv2yo0awrLl+su2Hp/MpbwlM03kPTGH gUBeEDfZ/+ZBOpAUvq7e3o9PFPUbYQhpYDAT890LNPcxgegLl0VqXAKbQgFhXedB s9tVHWc+1JMyxVqFvel0b3WJLpoLYIRa24qPNkkn3ob3KjWER1h9VmXON3yZDuE= =kQAU -----END PGP SIGNATURE-----