-----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-tomcat-apache-14.0-jessie-amd64-xen.tar.bz2.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-tomcat-apache-14.0-jessie-amd64-xen.tar.bz2 a7f795945da9691996437e372fa04bee $ sha1sum turnkey-tomcat-apache-14.0-jessie-amd64-xen.tar.bz2 1dd48991198475fd0b7a66b9b9f91742349f4793 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiCAAoJEIXCXpWhbrlN2/YH/1Rd25lMg2SF21KVd9XzgiVH dpxx5P/wjX32o9jEKkA1ZiFBUbmviRa5WcjrK3lMouC/jpODIyZesAgSxkVmiTFG QndD9GY0WCvnm+bC/6Zx9EhOlFwQzizygWe9hC9vqqThVcSr3XspiFGIOIRy52VX J3mVQhZrRNJkJ8S2J/bhxv66ApSoIhCs9tc1dmo519eChaaGHYn080SfVTCy0XDR DNXvOm7u7JjkNhfxTV/RqXOooAyv/Y0BjPMB2j+C5uy8CG+Gv+4B9xRj+TJdW07x DcwwpYBpAES3XKapGqO2XLGUIsxIL96TCyQqALf8xg9etizJfpXrEsge8KmDFZs= =9kT3 -----END PGP SIGNATURE-----