-----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-leantime-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-leantime-16.0-buster-amd64.iso ce8c3cdac808c77ad37efa7ed80fc470ee6a3ccb6a9b3e4043160f52fe9e654f turnkey-leantime-16.0-buster-amd64.iso $ sha512sum turnkey-leantime-16.0-buster-amd64.iso b51945e7e2b1483b7ba5e0b2b89247f4c931a3cdf3fe49793f24f98f9154e5fcf80cd401f922f547271aa16624ca30a58435d4ea8db85c5121f69ceee89ada4d turnkey-leantime-16.0-buster-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-leantime-16.0-buster-amd64.iso.hash turnkey-leantime-16.0-buster-amd64.iso: OK $ sha512sum -c turnkey-leantime-16.0-buster-amd64.iso.hash turnkey-leantime-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----- iQIzBAEBCgAdFiEE8ZCki1TcVrLH8k3LrF6wBJPlvBwFAl/YwagACgkQrF6wBJPl vBzqgQ//Xlju0c6/X98H5bJUo0whuIWj/k2pvt3bZpX/TzkMADL9FVJBtD2dbUtK psXK22oCHeXnZpgPGEVqKAybAyNNaf/r3M/FFKPd9haRsmI1USix6rWybx9YD0dA zlrjt1lvXCi5h5BmjA5GCO9MW5GtxI4ZeyZQ9r5lf/jw1oR68OlFgnfxPkIeS2z6 VtXSqP2vVu/OJrszs3Ct7514b90Q5s9Nl7B2r9Af5Bmm+nJMUIPy2zNNAY2M168M WAdp4f4oEW5sF/Ha2SeeZU684G1Z8emPGlVaB/ObKA59efSzbXVNnD4/haG2KMCj Kh0ysYAPG45yRIC+xVykQQwtcCotcKdb7r8P7UL+IXx8f3yfFXd8dsYG8DOZQzSY KctU2c389hkrhabiJ1jEMGYGfHzeC+c8vcLApqHQw3uaFtbOeFpWw0iFi1709b1r 6saEEVfbFJO2lexLDfaXas9IkMvNPbjtuSmD7GBCaDOrmJpEAmNN1WySeJcqITAc HqsFYNJI2OkUf4pMnbmgNyUnN2a50dlNvYchJs/xkc2A1MjG+ORhUATjkWrz+3Ke /qF5nPDlzqg815cmJMNoEIx4WIOn/tpee/6u1RsXIU+jwexubgfnqr7MeX6zWYqm cX+MOasyE+edSvlCTqa1D+PeQZnMpxz4r2jcky9EM6GGjQwb9Xs= =D0/V -----END PGP SIGNATURE-----