-----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 debian-8-turnkey-sitracker_14.1-1_amd64.tar.gz.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 debian-8-turnkey-sitracker_14.1-1_amd64.tar.gz 6d338e4cb1caae4c104a976c2fbb4018 $ sha1sum debian-8-turnkey-sitracker_14.1-1_amd64.tar.gz 0d70b41e1dc84bbae92ddf6eccbf787fe74373e1 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnuAAoJEIXCXpWhbrlNoM0H/ieLBO6uiMEzzWlYENWwijJo bwcNw8siouVdZBjGiBDfbTb3Y16rzFHvgdawT1JhIry2RZ4BcFqo6gGqAOY0ERKD eHoEy5yaCk9rjiBTJLXd4Tr5ojxFpWgaft2kjGsVz99kfygH3pr/CerhaSpUIQML KAojQ7TSHY+x2yoeqRXZ/VNi3/1NOeUt/OEYPfQyClXW+zc5t0m/DhOvq9Tj6Inm uJyspTSGQUsk+duyt1gd+sAakiELaE04YlVqr/eLmOQk1YkL3iBg0ugzVJBvBNq5 Do99UDYTVaoDTdbTXrUWZHIKVuCiUOdVScc5hYei2cmYLIKue/Aw9fapK0CVKUM= =0qUp -----END PGP SIGNATURE-----