-----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-mediaserver-18.1-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-mediaserver-18.1-bookworm-amd64.iso 4a7423b1cb8d31d3ae56d2b16367f9e302e8ced9d2f81b807899de40de6de50c turnkey-mediaserver-18.1-bookworm-amd64.iso $ sha512sum turnkey-mediaserver-18.1-bookworm-amd64.iso 3ba265c11f5e67df40e78d234d3d6bf64ca109ac3b3666476507583f9a16041912799b13d767c22fc055cdae12069e2d3ec7ee38a2c53ba94b6dccf82cd35a1a turnkey-mediaserver-18.1-bookworm-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-mediaserver-18.1-bookworm-amd64.iso.hash turnkey-mediaserver-18.1-bookworm-amd64.iso: OK $ sha512sum -c turnkey-mediaserver-18.1-bookworm-amd64.iso.hash turnkey-mediaserver-18.1-bookworm-amd64.iso: OK Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted. -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE0achB3UVKiMsY4ckkPLGHN5q3jcFAmbMOMgACgkQkPLGHN5q 3jcehxAAj5LD+aG0RrhkVAcc0CtURVerVmNlrP1njRUgmeuMu9cLGRSvYxMXnMId MceKqj9CCmBfN/g5stgaIwCEiiCdKeZDodZQaWUSLHTjBk5vUeCOBkvEwr1ksZFi 0jxr1zJ8UrS6HKRSp6qvBaT0mBv8T5qPfsJ5sQqWmuIVAX8QZAmhAAlu4u4eU6Ia Ua7fcYik4gXgyv/wUDGeU9GL6LTSNfMw4+yZzgaQAjva17GOYTVERcy+nFPQv1Az PpQ40+ozrnBGm899s52tBtcD4WREnKCyz7pq4SpAcH0x2Bn0RgrC9o+f/5nJNMui 3tVzmb6ZuvcC7qtXnLDFXk319aOTNyeBT5fapwoWD4jpPs3u9tTSdKHRaHf8P8at rIBANWlct3IycBIhqwIyJai+52V/biV2S+D3YnJ3rhQF1M9wg48LCOgrmoUKroP2 +Ygzj4Di/Ty1Vl6y062l7ZCasl/7bNaCt7WRuGTZ/CariYwSLgTsUQnv2isy4MlY 3NnV3INeJ2Sa0zvL2zWxOcu+xdvlqjQ2LWzNhZ98PGEN1dNPPrbRH0YRjVGGidne fIyFtrgv+8YaQhfspPmraQ6fNMGVwmhas7kP/RSNxXSEI/MD6YExn/CjMTg8eBX6 xvuPO5iDQcl3/iE5mjr3vI25l4kKuWBUD6JJoHeIVvdBLyvkDY4= =eec6 -----END PGP SIGNATURE-----