-----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-observium_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-observium_14.1-1_amd64.tar.gz 58dfb22073718aba0f02c6cf626ed91e $ sha1sum debian-8-turnkey-observium_14.1-1_amd64.tar.gz a043d6586b11d7665b2ac8ce44132bbc0ea9509f -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnsAAoJEIXCXpWhbrlNKtAIAIXFK6bD5ar1LDaw4wA6xMvb kzUtO9bxB98JTsIGGiP4qrRuc9jTlBrvq8xGnLo/2QtFc7JOw+6P/m9HljuTxvuc QhmOlD/vAWybu129clk2r//XJY1eOdVGVTmzm/Q5cw/reAYdpyMXRsVesRy3ldXI 9aiIUsGkkVN3vaftlx9S9j45g3vWf5C+6Izvkv1MR/Luo35fDBLwpprJvcKz5Odf VswSF9SxZiBMce9DqqfbLTsV7Rom68JmalNynO++yWJUDHmhvssEvD8Ll2eGUPP5 R/b6QI60J/SargBN4FUQPkWtPuc6drNPoDtVlBOjwimbmYdNRSG5Szb1FYbF/ZQ= =zQp0 -----END PGP SIGNATURE-----