-----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-vanilla-14.1-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-vanilla-14.1-jessie-amd64-xen.tar.bz2 9608da0fa29c145e4b562177117c590d $ sha1sum turnkey-vanilla-14.1-jessie-amd64-xen.tar.bz2 8443f6b1f7cb52513dbed8cb9e1b832c9fe6e2f8 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn8AAoJEIXCXpWhbrlNGo4IAIh+FW9oGbkbzx+jsKu8w/iw e2FYDAWEBRRct+UVaH+uQODFfjBK1P9zw+oJ91xKjXbcNOyU/FwJFODMLBEnDnsu E62YdlfgzR0fi6OzC/1BX8hz8PN1pAApKXXGGSV4gZRnscWD2Zy3igDEzCZO96zQ Gbf/okPqnMjHzMPQb6f2nrXKjkHb3dlc9341O7gvnkrvZXxLfg1f6OL343oW90/5 onTLlxd2KLoesc9FKKu+FFgwuw4HY5MkjKYZJaOnB94NzBDxfJ7NVnXYJYd/gEaT jWHrU1pFBrJ0BADePSX/C/UiSuyfSZFBfSyvMJsnEdr52W81p8e8ByHnxPLaIkA= =vBxV -----END PGP SIGNATURE-----