-----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-punbb-14.2-jessie-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-punbb-14.2-jessie-amd64.iso 561c52ef441bda6d5fad16564ad9c536aae973a6de010f46fa3be970c6daf83a turnkey-punbb-14.2-jessie-amd64.iso $ sha512sum turnkey-punbb-14.2-jessie-amd64.iso 3117697ef77f0ceb1f89fe338de2e3f708f09fea51988bd0b947e47af761cda0ebc9c3aa049adf870110868c1ed48a67c9ce565ed0f33a9dbaccf597940d0f5f turnkey-punbb-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-punbb-14.2-jessie-amd64.iso.hash turnkey-punbb-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-punbb-14.2-jessie-amd64.iso.hash turnkey-punbb-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZAJDqAAoJEIXCXpWhbrlNf3wH/Rv34qVwy/sueDjP+oNRzMKn opNb3G/6rXOYM/7wQu+Hxl946CX5dJyIWIvoYlfVnec4u+181CfjCppb06j0UUGe VkZ31J1eEgdll9+r9VjFv4x8el7gPocr7U6+hLbm2NXIDzd5dXE0DhbY8prnYj9z Ngxi+Df3v+HyzVdHcotft5v0b6ED+NGC/lHJvAQliZrphSagJrt52DkresmyJLl1 mRQnSN9edXEgEW/H+p3lRq8h9e3YsNGw2dvMzTTknshrG7CRPAWq2khW4zNmW4yQ tG7MK4I8gf/64R1VGAzdN/ZLQCMSwcN4XQ3kSxE6p7Nr2/PZqXjK7rxDDZWDy8c= =jbpc -----END PGP SIGNATURE-----