-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 To ensure the image has not been corrupted in transmit or tampered with, perform the following two steps to cryptographically verify image integrity: 1. Verify the authenticity of this file by checking that it is signed with our GPG release key: $ curl https://raw.githubusercontent.com/turnkeylinux/common/18.x/keys/tkl-bookworm-images.asc | gpg --import $ gpg --list-keys --with-fingerprint release-bookworm-images@turnkeylinux.org pub rsa4096 2023-05-22 [SC] [expires: 2043-05-17] 2614 7592 087C 0EDE 4214 3B63 7761 DEBA BBCF BA7C uid [ unknown] TurnKey GNU/Linux Bookworm Images (GPG signing key for TurnKey Linux Bookworm Images) sub rsa4096 2023-05-22 [S] [expires: 2043-05-17] $ gpg --verify turnkey-faveo-helpdesk-18.0-bookworm-amd64.iso.hash gpg: Signature made using RSA key ID 26147592087C0EDE42143B637761DEBABBCFBA7C gpg: Good signature from "0" 2. Recalculate the image hash and make sure it matches your choice of hash below. $ sha256sum turnkey-faveo-helpdesk-18.0-bookworm-amd64.iso 69296c7206d6da7cd235271fcf1169931ea9035e88e8ac3b06af8d57fc9b4f0f turnkey-faveo-helpdesk-18.0-bookworm-amd64.iso $ sha512sum turnkey-faveo-helpdesk-18.0-bookworm-amd64.iso a1f28b093816e6ebd80ebd56205d1b00212872e9fd9d533c713ff988f9f79004170c9089d9528497f34cb6fb0816bfcb2526a2713defe924ffb8f34d9dd800a8 turnkey-faveo-helpdesk-18.0-bookworm-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-faveo-helpdesk-18.0-bookworm-amd64.iso.hash turnkey-faveo-helpdesk-18.0-bookworm-amd64.iso: OK $ sha512sum -c turnkey-faveo-helpdesk-18.0-bookworm-amd64.iso.hash turnkey-faveo-helpdesk-18.0-bookworm-amd64.iso: OK Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted. -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE0achB3UVKiMsY4ckkPLGHN5q3jcFAmYx8G4ACgkQkPLGHN5q 3jcm2A/9F3IRfE2nJSEeqWCFAKOA0U3eMOWmBJTUqiqQzlgWPx31v6uHOvqyNLuj h4CIEGpQrkxSb8JGq/Kh5j/cRZ1zpYgHjooXM9XBuXLNmIY/o2P69g+i4R+I438r 2Bd+aP1aTMAyobFeHi8gMO/0sV7h4qlzTZzzfpAU6B3tv92AXzvBVRx+/FsbArKP ffzWY4AXt2fqgwkAmvTugKX36UYLnnl/iRexIDAf4bQrpKWi+y0q9ZGrRpDqKEzG gU0HOqswjZzhOZFQPu+sP3IFgVaqTu7JE0AGkOZZdjQAbw3griGWd4Cs20de+2ul +oLPIn5nd90yKP30NYB5FCCqD3WUMgU1QivUapBBZyGQbckBJWRdDbTU8oxgrsuc 4pnh2X6JEOp9xWFlyZWrZ8OlczADWDPasX3CThdV7JRWKF4+sHGuZPhCxnpM4TWd AhwWGW9E3h8zJpYJHEkUbPPY+GthuiUlSB/rAiR7X07B++Lj6T3lbk8/0uwLwuAh jxFfZLHqKrAc/ZBqXvCOqOgBQlgG1wNonPK2yadwdDWNEPQFYaYMGEnd00Rpi/bQ GbsrTzWGJUmw5qFkVZBGdUbu+sl3Vkofl97Wd8du4DTGP/18VoMQ2VosaTeOz9gF utUoFOdWpfeaUOCOp8RvAedaMqwqoRcmkZ8lVlDbv5hnoGzm54s= =aKGg -----END PGP SIGNATURE-----