-----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-redmine-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-redmine-14.1-jessie-amd64.iso 6463f135b2292e20b815506c9924b1bb $ sha1sum turnkey-redmine-14.1-jessie-amd64.iso 50311beb3227b2ad89acafbb6ac55802f943ffb1 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkP0AAoJEIXCXpWhbrlNiFAH/1ozqzlcvibZKmGHsYilLfyn uRyA5laoD94wHtGeF4SAJfFKNHpIjINGpNi8MJklQs+klAR5O2Ih536MOAIKT3FD 91cQZnJkZflyX86EJ62bnyPqDwxIctaLMpWy+vtaTdhyOcT3cMFvMW2YPCTDdLX1 56VDxLpnve/c2uFR6X2Z+syqbY76rB9p36UQ+RWbLF9GncU6/s5wjLTRRuBWYBU9 z+m3C7wjDBZdqkTXuCKQ5ghn2Xg2iNuOEw4vTyMCcODXJ/ECzWgEuXuooY+XPyXk 2Dc7oahHvBDtt+XaGs50kK5A1iJpkuXjWq9cwzMt7GgwVfJVPLP6f5valuP4BMs= =hVsu -----END PGP SIGNATURE-----