-----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-tkldev-14.1-jessie-amd64.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-tkldev-14.1-jessie-amd64.iso b5778d89d1b27f8424716b2f8844a0f8 $ sha1sum turnkey-tkldev-14.1-jessie-amd64.iso b624c73bf4dd851d2ca61bd8e1e88ca07f3979d2 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkP0AAoJEIXCXpWhbrlNe78H/ji6oahqHvTDJJC4YUr0LTBH Kp5ofDMn9vr4DJL9jg0sLNCzjeq6vEKhzVDe45i25z/GVjqvbQjIYJLOwoRiD3Sz 4tAhWiuMEPbry2JUjvRn/smmcotPL3cvg/0W2LzdTm6zF+fCO2nlYqHhKiPQeMZC sVd7g5y0QomH3hQi/rkUkTdsYY4dBf77bS7FHLdt6N1eCSMStLYi/n5gWLOe3Txs dmx/NyqKbBpkIuWJMTVZN4/SR5voQxzOaSDGqOv9aIha+MAcAAWpC2ASLqV3es1j HAtKnqlNQgbodoqu3EbZlSk8FPcFu/C7dILnZDDhnL8EdnqCFoAB9H4B7xMn7Ik= =Z4kK -----END PGP SIGNATURE-----