-----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-xoops-15.0-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-xoops-15.0-stretch-amd64.iso 9beec56101b3a41705e19d1d1bda50f73e4e617b7099ff02675b66d2aa06a55b turnkey-xoops-15.0-stretch-amd64.iso $ sha512sum turnkey-xoops-15.0-stretch-amd64.iso 25a1647493146bf1a958c3e4dcb8024d4fcab73d7d39e79a7d73f5e88d80515b2116a21de9317f108876359a76729b16c09097aa520fda08c4481f672b036a72 turnkey-xoops-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-xoops-15.0-stretch-amd64.iso.hash turnkey-xoops-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-xoops-15.0-stretch-amd64.iso.hash turnkey-xoops-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlT4ACgkQhcJelaFu uU3TTwf/dTtunOxii+/suwKGmgE3POzPcK02D3OAwV0JFn49Efz/nyeLFx6hUl6V td5kA1J4/rPoYwZdPcvmtkH4ele+LXdElbJFnTf/boN2MLPbhDoysn+sLuQRj125 6xHjc8JuDd4KMP2qGzPSXaYJI42FBeZliZCB0+or70bLqml+b1NKjkA0eD7K3kNw upS9wJzd6MF2qyYf3gDNKJEYjZtWV0SQ+sTnnpxtx1Qy/13YQb2g9brDvDCatF5h Ie8szqDnpiIgUnj83z84ASwL4InZEi2o65l7Iv56GrOS44kBmmRkWq7GfF37NcLt xmOix+7BJ9C40Qz54kdHpWwjnxfYiQ== =GmBS -----END PGP SIGNATURE-----