-----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 turnkey-nextcloud-16.0-buster-amd64.iso.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 turnkey-nextcloud-16.0-buster-amd64.iso 2d2abbcdcf564b567cd6838a6d3b3face23cf4f24dfdafe110468d05566e333b turnkey-nextcloud-16.0-buster-amd64.iso $ sha512sum turnkey-nextcloud-16.0-buster-amd64.iso 3b1139b4dcf7dce123967510418ccaeabab87b78c0b0570c8ee8e8542c528c13fd915b95104cfb42f4d9f26dbd65e549e6e307db0b5720d5eaa6c45ffe5181e1 turnkey-nextcloud-16.0-buster-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-nextcloud-16.0-buster-amd64.iso.hash turnkey-nextcloud-16.0-buster-amd64.iso: OK $ sha512sum -c turnkey-nextcloud-16.0-buster-amd64.iso.hash turnkey-nextcloud-16.0-buster-amd64.iso: OK Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted. -----BEGIN PGP SIGNATURE----- iQIyBAEBCgAdFiEE8ZCki1TcVrLH8k3LrF6wBJPlvBwFAl6upFgACgkQrF6wBJPl vBzSVg/2Oy2cnoIhXR+UmaGPrJINPMS4wby4v9+rlF7zNegd+pCrh2MokQzEZDF6 9CAhPCJradKz1uewV26ydvcw2XAiO2QlVpSSlTuoUSNVwajSqa22qwoPj82SvSyD JwrVWYjGZFfyieMqiQsyoTo7rLREvu5sqkO6V2BSwLQcHU+V+2Y/nM4A/kpXDdxR NfCtAJPNzy4qwm+SOiGeA9/tW7TgsDKIrQy95lNz0Pc2mpqIIBlI3WqTgr8tACPI Ps2TbAK4BNqgkOGXgquck1WF4k43tlaZaBuJKhlNMhpUcctI69jhicxzGsMHbcTc MkDE/g5C4fgiRc34BoQDvoAQJYMeMKgii9NRv7vhUCaHILumA79WfJBIYLN6x198 1udYNwvTsUsqmObr+wGmhyHP2Up5ASOcS1nqBpqk3ZmhpHZAJQoDVhIMgAgOggEg /+Pab9KKynD3Rk/Z2kiynDp1TZdBc5LixCqT1E3zseM46ekV5woQ4r/MoOLsUq56 3bSje4ecyqc85aiq6SNm1ElXk3bGFM5oduoZGpLMbOCuLB8oQMk37EcjpfOPcUdG PlLv11XVLfNSfJRy7f7qbgtAprVnNm4656mK5o9zrBMXcR9v2YHZaW9ne2gTR314 my+YElvT+plXsLK9xD6p8W2vPqJ9255T2rEHpyx3WXXdUDM8bQ== =c5JQ -----END PGP SIGNATURE-----