-----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-phpbb-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-phpbb-14.2-jessie-amd64.iso 14d59f08d169e9522ebe65b0d6e37fd70061910e3093db07ee53d325b26545b7 turnkey-phpbb-14.2-jessie-amd64.iso $ sha512sum turnkey-phpbb-14.2-jessie-amd64.iso 513fe2724b1457dd14b0313ef8147111732cfe7b7297880a7291d0e94fcb55ce098abc595671facaac9c9dcfd905865f5e0486516fe1a47f02e64331bfb69ad7 turnkey-phpbb-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-phpbb-14.2-jessie-amd64.iso.hash turnkey-phpbb-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-phpbb-14.2-jessie-amd64.iso.hash turnkey-phpbb-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZIVn5AAoJEIXCXpWhbrlN4hkH/0UK8DpgqoYrjS/Eml0mtELV KHwifBBOpaUIm4t9RM02T1wJjeWlRwXhul7bcuLD3f39iPhx799Q9b4RLLbQG4ir 4GIIvtKFmKFG6lqsR5QWmBPxLS4VdJm5+KzwO9k3Kt8848nLyScKLMTqjwyGx1SF cGB3Zyp1hHWUNXPokoZc/xDc6eVPCWk8Gxr4TrjeMgff7k2zjKeXHc3hRlwQkaNU AY7DOq2GERFhz1rv4QyZOZt7mujYHqRqI6kWQznmBOnGXQfoI9hp+iJKs1d49INl U+sI/nWVXHJxTobcaaO4Sey3lBBdb/m9y3orfAZS44mHzr9V3SKagTcS6EDSpuQ= =5bC8 -----END PGP SIGNATURE-----