-----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-simplemachines_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-simplemachines_14.1-1_amd64.tar.gz 583b68749eb24fdb748ddaa8d2bdc61f $ sha1sum debian-8-turnkey-simplemachines_14.1-1_amd64.tar.gz 2be0ac5fe37cdcaacd0b05d5f3a94637b633af63 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnuAAoJEIXCXpWhbrlNhi0H/1CUCwf7j1BJ+FD67cwpJeWs kuPvRYLoIAFtT2uMugK9czNhw29S4e3330VDy+L54PMd5cKDmfSfZXosh0YmdqUs lGkVluJRJ0NUD9UgCxJ2kbGntUkPjA0W6oAeeWKWV00ZdjAZx21BnQmKHupDjA/S /qx0+SsyJ/n/sj+oF6KXD0WTL2kqnpGAyGnZ/3mCwMnCZv5XCDu+lSjL3fcU797z ygjj35coUdFHaxdgSDaTPvtPB9i257zNuWtnJSEpqnCqNByyuJd1PFWafNqS/yJk 7oi5Jd4HJdAzaqXlwVAIpQPBx2p9Ik46hcLh7HjFI+4oWdEZiciu1OHn07zgpWM= =tY73 -----END PGP SIGNATURE-----