-----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-revision-control-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-revision-control-14.0-jessie-amd64-xen.tar.bz2 2e8fdef4d22713b44c393b838c823230 $ sha1sum turnkey-revision-control-14.0-jessie-amd64-xen.tar.bz2 2a9c83dc6256f87cc7d73f5c1e0418b1c2fe2149 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiCAAoJEIXCXpWhbrlN40UH/2npmlaBlZ32ETf/S9TtSFNr FTkk/h4B/QErm6iFIFAadjL1FlQnzKlOOMYo10kO/rmDEW0/0+jlPnJU0idnXOTI Ycxma+EDPQ7xcN4yL8KzcXzA2O3ZdXTuTqWVgCG4yEH7Fr/J9c7rr+SUFzziGNLU KxRtPiStUlQbyky+Uxkxg8jXW4hJgq4wi69Rv1p/22XUCtwsyrcwC2dfQBdvWr5X zfH97k4WoulIPmkDu4wG7XmwJ1+nS2rMiJ7/9ptQmqJAc9kuYsIoLFZuI1SGp5tC q/mTzzkSZBLRm6xdBLtu84gU2s3vKxHNNTVJiTlfLXBvP0F9TJ1LuVeERrKMgF8= =r9IR -----END PGP SIGNATURE-----