-----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/master/keys/tkl-buster-images.asc | gpg --import $ gpg --list-keys --with-fingerprint release-buster-images@turnkeylinux.org pub rsa4096 2020-02-05 [SC] [expires: 2040-01-31] A8B2 EF42 8781 9B03 D351 6CCA 7623 1C20 425E 9772 uid [ unknown] TurnKey GNU/Linux Buster Images (GPG signing key for TurnKey Linux Buster Images) sub rsa4096 2020-02-05 [S] [expires: 2040-01-31] $ gpg --verify debian-10-turnkey-mattermost_16.1-1_amd64.tar.gz.hash gpg: Signature made using RSA key ID A8B2EF4287819B03D3516CCA76231C20425E9772 gpg: Good signature from "0" 2. Recalculate the image hash and make sure it matches your choice of hash below. $ sha256sum debian-10-turnkey-mattermost_16.1-1_amd64.tar.gz 9ad333959353f74de316e95e140978bd3fb5a8c46ce8939a8132f3b0b5fb80af debian-10-turnkey-mattermost_16.1-1_amd64.tar.gz $ sha512sum debian-10-turnkey-mattermost_16.1-1_amd64.tar.gz a4bca0cb9ccac027a252485bd20ff94bd638d51be1ecec8429ade1bedc6f233104f9c866d95edc82312ad91de39ee7bc673c326a78ae0049dd2dacb49d9dda72 debian-10-turnkey-mattermost_16.1-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-10-turnkey-mattermost_16.1-1_amd64.tar.gz.hash debian-10-turnkey-mattermost_16.1-1_amd64.tar.gz: OK $ sha512sum -c debian-10-turnkey-mattermost_16.1-1_amd64.tar.gz.hash debian-10-turnkey-mattermost_16.1-1_amd64.tar.gz: OK Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted. -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE8ZCki1TcVrLH8k3LrF6wBJPlvBwFAmBh2NIACgkQrF6wBJPl vBx+qQ//fzNvM3Nwlbag1GoS5KcLhUFaTSwLLdg6mFvcKcFYWxczZkN6F1tS7LrN emKAvDCZbHsW8ge6jn1ElhOV6KKJaKk8EMa2Y3ii2FpVgReOqX1Ete/8JQNKaMgl OWPBQ8yt/WdAu7RjmD8v5oWqLl7AK8Pmp3+SbWVfZsF6logFMFE9q6l72lagoJVF PRe+ZYMS5gHUnUhUAFpmfrlwOI+nwkmUJBTfZxjD8T4f+3noROufU+slP81LX0YB wiW0EXHpuDAw+YYV+v245H4YbbuPMftCEKBTupBlq6OoWCViA3KevIEHt60cbMP6 pFLAxjHQB0gRYAnlzX0wklV9MUI1svBEt6LcS3XqKAZ74YZd+C6PgYsuQdREnSJX x0Obx3c81tl2EQP5Uc/uvy/9ThOXlSqfPAFeCyYtYTN3v39ttHYR8oIpuN8BAGy+ PWX/J32D6SEk0hTVHRo/m3YDl7v2XEH5DPqepfQxtizLyH1l56tb0HU7CMP4rbHL gZ54ECwqvEDUcKWlIGVNuz6M7TKkVwrA2dQSehLz92XBp54DzU3ZjOQ5atcxsrEB 3QXfDQ54tq3SiHxTMty3ub3OgdnpJ79LdkUKf+svFEgS27OjZ+DJoxqkTpKrVlFT k1QU5I9UQ3DT7/BOyMpZyifnCKEsBcC7pye9n42/9p/pm7SqqoQ= =p18m -----END PGP SIGNATURE-----