-----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-moodle-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-moodle-15.0-stretch-amd64.iso 01f0c2591b5eea0cbb798f4ad82554fdd61c353ca295f1494c71e74980baf9a7 turnkey-moodle-15.0-stretch-amd64.iso $ sha512sum turnkey-moodle-15.0-stretch-amd64.iso 19188d6c923b3825cf5448537620385c781554dfaf6e27597725804b1cad03ea40fb45cbf0703ea866a460ca508e06e6bf8b98f04b89ebfc67492a5cd3706609 turnkey-moodle-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-moodle-15.0-stretch-amd64.iso.hash turnkey-moodle-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-moodle-15.0-stretch-amd64.iso.hash turnkey-moodle-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluD9TsACgkQhcJelaFu uU1+Swf/b2VdIDdoyA4tFHzJB8KFPlw8xePLsZ96YUgxTTVcV8FBfTi9U5eBrgkd lZVDwr0S721SVr3T8Rqa4mPMYHBVmN9x/aO67a2mFYley0unshr/uaZIbLlouJOn ztqcedNhcxZt+aWXCtqLgePkobUo5jPJHqAjo0v1bUb9brcBr9a1Hu4wKxmi6NVx XAaajFR/e+AjkAD0fHy+dhBoweTLMhFszJCIs6QU65oWdlbJ2FdCCzmhoW13rx0/ NST7OKIzX6anNaNGOdZz3d4RkToSMCDxXTbcvLOaOc8qJaLVsV7A3cV52/avpF8j B2Cha4XLBOXaOytiOt8RE/iUggyFog== =yiVo -----END PGP SIGNATURE-----