-----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-core-15.0rc1-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-core-15.0rc1-stretch-amd64.iso 8818200fda78d96f07126012593bae31ac172c527444baabf5645323eb1893a2 turnkey-core-15.0rc1-stretch-amd64.iso $ sha512sum turnkey-core-15.0rc1-stretch-amd64.iso 2c1bc79cff82defcd53465e9e3888df7372e38919f41507b7b8404b753fc1b04dbd7943393cb01bb196138723d8e170bf190e67665ea25143a81f13867b7db96 turnkey-core-15.0rc1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-core-15.0rc1-stretch-amd64.iso.hash turnkey-core-15.0rc1-stretch-amd64.iso: OK $ sha512sum -c turnkey-core-15.0rc1-stretch-amd64.iso.hash turnkey-core-15.0rc1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlrm4mcACgkQhcJelaFu uU38MAf+LIH6TfC1THrWz0iVME3v9jNQOkVzvdaPJGuUsQ+cyCf3kxSRzYhYYFQl WwH3CtmktrNTQTZqA6Yqdh6y8Jq48c9zjeg+BXAXNZyZBPevvVVsNUlnPWpRAx4M AK93yBzF/UDi2P68H9Nxv0SYwH5scVva97NHcc4gJ3JAGU7uQETH5t1/LkfoKRjY TNvL50juWOTNlBqRh8erYOD7DF08oA8FhU7nQ2fr7V7BIL/A5Xm5SmJBn+fWSsVe ZYhu6Lwnsh8v/B4VTzfK5TkJmiHBo5GdFVTPITVan85kSmtiPDPL3eYWe0LmExnP PT6JSqsPr4tx/psyqYWCsXliKABOMw== =iuMS -----END PGP SIGNATURE-----