-----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-mongodb-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-mongodb-15.0-stretch-amd64.iso bb89710f3cbd2698591cef895f144233d3b41ac05d843e87ebfbb64eae779c18 turnkey-mongodb-15.0-stretch-amd64.iso $ sha512sum turnkey-mongodb-15.0-stretch-amd64.iso d4dbdf341adac761171a91065938bd6890e84b4192ed3d16d57f72834c99a49345e484ac329b366082b9a447096f0aab1ef16cb229802494b52089310f71d759 turnkey-mongodb-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-mongodb-15.0-stretch-amd64.iso.hash turnkey-mongodb-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-mongodb-15.0-stretch-amd64.iso.hash turnkey-mongodb-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlvITPkACgkQhcJelaFu uU2BHgf/aMMd/9LmNYCztNyeSNOr4UIeNulze9o7madilK70GaUvU3VA8ESPelVo CAUJd4L0a5WWOibPwGEgYccNMCsdjLkHQVG9dGcSKKiF8d/nRMealwUoWFQFyA6v UE+Uh1FCqyBko5x8dCKKsdLkEpPBU1eyo34Kb1GIY7kARnRW6gSSA3eUNtYRkICk 5IwouAlWkqYxjq8+MmFmwMwxZWVjP1/dnfIeTJ/jfIesNEaBcTufT3Xz9tOfde4p OcdNlVd0Ote8AY2gH+ppn9u8sAEgWBnqtAvUGFGxMkB2t/NNLslPM/0hikBbJACa kkKTIJLSS9uMTfYva72t/JYc4rbFfQ== =g8/i -----END PGP SIGNATURE-----