-----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-etherpad-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-etherpad-14.2-jessie-amd64.iso 505d5d565665bcd5721318dc64cfb64963cd1ddd263d779d851f963f35ac9d94 turnkey-etherpad-14.2-jessie-amd64.iso $ sha512sum turnkey-etherpad-14.2-jessie-amd64.iso 080328e1cc9e6680964d05f3ca3e80b2065a11c21fe9fcb1077b40dbc610a7d77b9b4465c35b939325b4e802dac61528a36f4abfa7a94d0335d9f403cf6c80d8 turnkey-etherpad-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-etherpad-14.2-jessie-amd64.iso.hash turnkey-etherpad-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-etherpad-14.2-jessie-amd64.iso.hash turnkey-etherpad-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZeIKkAAoJEIXCXpWhbrlNW3gIAIS6WSKKf4Wi9TlUl/bOIoNG zSi52aw5DwXEPStNrkUfkAvTdsxbnv/E/Yffd0CdL8rlszxTUhnfxu8r7AS2rIN8 eKSkCYy+ZUTnTUwveC7Z9UDgvrAiiAjLExWCgQ/iexmg0yzLK+AIBK7KxmXejCwe 7PwV6UnsJJ5K6ARnZvbmDbreUwtcbMt6SqT7E893SHeoHZmhZMGxi8K/H5WqFK7I 5qnnhsTaZC+dfrlSogydRKjYi9DJxeajlpbaKCtGIhcq2pStWGDz60z0H7wbdm+2 KHlIjDY+earPOhEWRXyai99xdo1eLZ3GIMFLCmFZmCI3gd3qavPwf7wSAf52DAg= =K8K7 -----END PGP SIGNATURE-----