-----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 debian-9-turnkey-jenkins_15.3-1_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 debian-9-turnkey-jenkins_15.3-1_amd64.tar.gz 3834c28433f07d6c70086d68f0d8e3d90939771f35239ac6104d095f05b72ffe debian-9-turnkey-jenkins_15.3-1_amd64.tar.gz $ sha512sum debian-9-turnkey-jenkins_15.3-1_amd64.tar.gz 2012f31f125680e43139eec30137bd5a4c27b728ec1d9cac86b634696405238d74b8cec03a47fa1f70953b88010b39a4cf6d612ad6591298f41d3aae79b78a92 debian-9-turnkey-jenkins_15.3-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-jenkins_15.3-1_amd64.tar.gz.hash debian-9-turnkey-jenkins_15.3-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-jenkins_15.3-1_amd64.tar.gz.hash debian-9-turnkey-jenkins_15.3-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/pg8ACgkQhcJelaFu uU1AyAgAoI6yvbdjj2lkeTsP6ulNiQm0gQ/l19qVq3LaykNLVbpsevy8JsAdfKIO MRCb3tBOJov64BKvrU0DQRdjJSua68++y9np8cD4al2PwUL3OWuoiriwnfxaxG18 ABJX91XpVSs/VZHo/7HSxLG2zIkKVbS95xZ1RTli5hca8K+kdV3YZPcNc9kLURiQ JBFIgUoXeKcDKx2zxli0ndKyGyNMuaCKxy/lrU9Nhxb2e5WQ18Jq6Q2DDqwzz1Cy hNQFV+yjuGcDGIbTzG3pyCS8Icd5IzLwpejuv49OY7MndSq8+nHMqYK9lbxEH2dt NzE5ty4WGnJFy9dGG/2gsaT6MPoc+w== =w7CG -----END PGP SIGNATURE-----