-----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-etherpad-14.1-jessie-amd64-vmdk.zip.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-etherpad-14.1-jessie-amd64-vmdk.zip b372bd0951163b732811d9fc0d43581b $ sha1sum turnkey-etherpad-14.1-jessie-amd64-vmdk.zip b646ecbb72288b260b80afdcf44416591987f27e -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnyAAoJEIXCXpWhbrlNLvwIAJkmqjyz5EXweZrz1miWj6hw 49VqxZGD9q4YSeVLBzzC9kE8zmTG/1/ThaI5l/L9w4VUmYHS3u3PIW4qn4fwYrE6 kyGsL1ktwFm/7+BVZyt9No/qWQWCyN6T0LbRsGeMr1jQVknF6A60vtErFebe4pH5 d1DUBjBUQ4DoiFyUuVh489Q/2yaCdVsekFBY0BeeBF20P7aywoMXF2WYCChJeImT Jf6SuCVc7ftGz2j+OttLIY5FhXOyYkneAVa/Mwncfnwu8r29EesfI2alGX/9J+BN jzbIBKWkIl/ZwdEXdI0PAKiBeCelEJU2vzNMirGvClkoFuUmdnwmIaR7/Xj6uak= =fOuX -----END PGP SIGNATURE-----