-----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-icescrum-15.1-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-icescrum-15.1-stretch-amd64.iso 1ba36c33498936063d561cab84cccdc08dea0b1bf773c928255578f6c82fda5f turnkey-icescrum-15.1-stretch-amd64.iso $ sha512sum turnkey-icescrum-15.1-stretch-amd64.iso ae9c7a57711bda7403bf5e987ee21cb957f41a2cf729e2eed7379ddcc6e40c057a45a9a780156bc291c97ee8ed35e831471bb2c02c7896f316c651a924ecee0e turnkey-icescrum-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-icescrum-15.1-stretch-amd64.iso.hash turnkey-icescrum-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-icescrum-15.1-stretch-amd64.iso.hash turnkey-icescrum-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/piIACgkQhcJelaFu uU0TOAgAyWPDY7XwlMwrYSPOtaG1TTFLNrQC8tc9rcnY1xMzeAcOEBwPrAHpHPC+ B/2ke3sAkUwMAdYJF1tDi0knZHJp7gXGgzdJfDXYFKS64znVhjJDdLgj/P+ih/mS 2PeAg6QQiBrP1LMVUZja7qp+WAIkW3mhw8se0k/QZu+0OuQsZHeZp+6TF1FB16Rk 88AdLIYiQy9DZQrYuHMXf+PogU3EyStoYFEKp2g6sme8j8Q85hZiNDQ7KotIR2tF MxQm2ViuWiZgJGT0mjt7stGF6PUjlciJgceFxrccrKlVL14LdKNt/2Wo8AKstNaO HX/4Jxnkd/4p+b/RO7l1ibFyXRfqdQ== =+Bb1 -----END PGP SIGNATURE-----