-----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-simpleinvoices-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-simpleinvoices-14.2-jessie-amd64.iso 85b4f61e6a4ddf66b63c75eefca489a9f639c4abfe51187c55ccc16b54fe6f3c turnkey-simpleinvoices-14.2-jessie-amd64.iso $ sha512sum turnkey-simpleinvoices-14.2-jessie-amd64.iso fa022ea014911ea558f9e18a89edafff5c10caa1992b7b66cc4eab413acfee1e54a158cbb53698bc377e1792cf69df6cae8c12728cfa9cf47f28e74030d027ca turnkey-simpleinvoices-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-simpleinvoices-14.2-jessie-amd64.iso.hash turnkey-simpleinvoices-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-simpleinvoices-14.2-jessie-amd64.iso.hash turnkey-simpleinvoices-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZIVn5AAoJEIXCXpWhbrlN5TwH/2uDcD7Pgd9QcUf4SmmNVq9u 4gwvDTNo5oZk1c4cLonDTnVABvyca49uHZ+wE/gLVjYGw1evziXh/2KrsbBuQ8K7 XEBMw67JBg+OJO83NSD0DNQsDslsQxLqds83tZKMpvK1o2yxmSNhAziWwlZt7WjU ylJZslxDkQga5+Hcc2LT5z2f8KXg6DOFjc4ZItbYqXk90mrB4dLeNkWBNharIKcz YXuCPhnx5uwPO3kRcUYlqJDYKIQleWfP1gtU0Ueuy3zzH+z1UahkJON+MEebbrTk GeIlLhLyoaxKnTKwDMMmttGekdG9yBZVA6joVUd/DlOzvoO11UTrCxEQnOMVSCg= =5vxL -----END PGP SIGNATURE-----