-----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 debian-12-turnkey-fileserver_18.0-1_amd64.tar.gz.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 debian-12-turnkey-fileserver_18.0-1_amd64.tar.gz c69b0e4372d3c1cc36e56efa688c041d3b5b299cae27718a2ea1d0499ab4ee07 debian-12-turnkey-fileserver_18.0-1_amd64.tar.gz $ sha512sum debian-12-turnkey-fileserver_18.0-1_amd64.tar.gz 8b05e42363b62faf5eb9cca2a59dc39e7e583873907eaf181771d61942cec012efbb666be4c8b65bc2c2afbf9ba6d41d0e726f52c84b7e46f658ed8bf17011c8 debian-12-turnkey-fileserver_18.0-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-12-turnkey-fileserver_18.0-1_amd64.tar.gz.hash debian-12-turnkey-fileserver_18.0-1_amd64.tar.gz: OK $ sha512sum -c debian-12-turnkey-fileserver_18.0-1_amd64.tar.gz.hash debian-12-turnkey-fileserver_18.0-1_amd64.tar.gz: OK Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted. -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE0achB3UVKiMsY4ckkPLGHN5q3jcFAmZwA/IACgkQkPLGHN5q 3jcgOg//fOKxeiEcsr3aeTL1grUK9BnanHfmr3TYdx43C/eDFUOG8vY1eW6XaG+c pIqZ2vrYraqMd3XRFId8bMwEEtwW2fpDPXr9H0+yTj/FvE33qWBTSlX4UgzdIu5/ M4evgbVnONY3yk1QWKnzbXwslyYZrU6UgUwyvUcPAai+sWkunKilpHo1CHNBh9wq wFftzQoH8Bpc2UqcppynVPd0s2um8BZgbed+YyMJ5C9CWhlA0hAgbRMaCONEqceb 2emoxHDyAgB4GDTiiOROjhejGM/QgXMGfDh8FWHGVmMYzy/4wyugQVBFbhYTTYBr M+TbMd+ntZhSCFwD8Kdv8mpVk4+sDYKiahrXOL1OZoiiURsiRMOB3Ya8A7WiWw8o F5PLjlj+JH0FWPNfaLx2UxE4lnI2Wb7SelJxdbmJwJbb8D4yre0GPupQypu1pfm0 SVwx+ZJc3VCZBgxJGMWDkAYlL5JwmA4GraKnP+wNcL258lN5BK+8LIgoRXM7qz/H SQqsP1a8zv7lgqCh3G79+zDdOF3hyMLHUVchqct2x3a8idsDZRc+n/9aq94hj0+R hC/+ZHQYSE8ilyyhaZXJ2Eo0XH4Dz58BoKUJbqfouMtjBMFyZeDyFv/dEKsDE2hX xpEag1jicHkE7wKP/sSY/bCE7JwAUklQWRJrBBQCqe/MiudPg8o= =T+nK -----END PGP SIGNATURE-----