-----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 bootstrap-stretch-amd64.tar.gz.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 bootstrap-stretch-amd64.tar.gz 42b93eb62b6db3b47767c1c229da78a7ab711c9eded4e60f9ef3a422c599b110 bootstrap-stretch-amd64.tar.gz $ sha512sum bootstrap-stretch-amd64.tar.gz 376562bf1c6ffd7acaa760de368a17253af05b4c4db5b17c69cc8cb3171b4c922cdd2106b357bce692d021ebd36f6ed275f7d335372e1afa32d5c9d2c5affbc6 bootstrap-stretch-amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c bootstrap-stretch-amd64.tar.gz.hash bootstrap-stretch-amd64.tar.gz: OK $ sha512sum -c bootstrap-stretch-amd64.tar.gz.hash bootstrap-stretch-amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlrLRXoACgkQhcJelaFu uU0rPgf/RsdtZzAyMeMZo784dxz9cVbSP49gyoDdWWnl2Q2GCvmKMRFZnWyNNdgG T4bxIi5mziGGRRUHAzRExAxi0UFT4I1Y9i0Nxu16+FjHtDmwMxMolTflrL5Q3WqK 2KKs9JzmeLfFyIOCpV0fUukxpOSF7x5H8bOpx5hHtbAZx7/ucPqNx2itT5KAM9Ex 1rlyNzUoQE4N3Aba1b0xXRQyCqTntgzUWdCy0MnBJBNoQwIGcmGCXWGBduhYda8Z Ubo9Gr3M74dNwO+V3raF7brG5LG9t60Yn8ZiX79QpTkr9yD72o9La6TG7KmsErYm W8mrhFXy7ZJulgwfrNjeneqOHlMqyQ== =lLZH -----END PGP SIGNATURE-----