-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 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://keybase.io/turnkeylinux/pgp_keys.asc | gpg --import $ gpg --list-keys --with-fingerprint release@turnkeylinux.com pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] Key fingerprint = 694C FF26 795A 29BA E07B 4EB5 85C2 5E95 A16E B94D uid Turnkey Linux Release Key $ gpg --verify turnkey-rails-15.1-stretch-amd64.iso.hash gpg: Signature made using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key " For extra credit you can validate the key's authenticity at: https://keybase.io/turnkeylinux 2. Recalculate the image hash and make sure it matches your choice of hash below. $ sha256sum turnkey-rails-15.1-stretch-amd64.iso ead527782a03e3bfaf2f4760b777732533ecd9f89cfcc8873c33792ae24c98a7 turnkey-rails-15.1-stretch-amd64.iso $ sha512sum turnkey-rails-15.1-stretch-amd64.iso 03dc1184ae66b20bb6759cb65a4c786faa722f17bf4d2e3d297bcc85641c4bae9b3efd4b5b284366e32c8dadcbe9197c801f2f7c2ff9a238b84a94e14bc2ca44 turnkey-rails-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-rails-15.1-stretch-amd64.iso.hash turnkey-rails-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-rails-15.1-stretch-amd64.iso.hash turnkey-rails-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/pjQACgkQhcJelaFu uU1pZwgAvBFoCpSN3qS0uprX9pSG4kpH1ycnH2MbLPB9NMMSskRxjqmsfX+cATv0 1ep9swgAuYSMvkCZXYtMyJJvV6B/uixbgNLCDLYTpOT6HSyxLywr6QqOQA8X9fu3 HXuby6MDSmBBvFwm3dOaylX2VfveP6hRsONVWlVG6jDPDvg65RYXtXbnvPSjK5EZ DaU1eQk43bTe7qIi/p8Ws4AXJpE6L3R6eCPDrHsLIXZnkfS5HO04p/koAkV+aArR Q2BfohcKit5qa0UC85Dk9amqBnhq2pvfb0UGYw0bRC4EOOz/G9NkDyVZrJaOtbNp Wf9FwrDMUs9lzLkWRisU2W4a2ahucQ== =TXPY -----END PGP SIGNATURE-----