-----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-mumble-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-mumble-14.2-jessie-amd64.iso 8f2831ef7ecc4a1c046e1a2eed109b15076697f0adb6b7b1dee8d639335de741 turnkey-mumble-14.2-jessie-amd64.iso $ sha512sum turnkey-mumble-14.2-jessie-amd64.iso 3b613f9b9467d8417758aefd5eea059a789157355adccb261c3b52e8ffa9e1b15250f5a72a6a6bbd6f6ffc677cedee481e433c12e6c89c777cbfc52c2a2a8146 turnkey-mumble-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-mumble-14.2-jessie-amd64.iso.hash turnkey-mumble-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-mumble-14.2-jessie-amd64.iso.hash turnkey-mumble-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZIVn5AAoJEIXCXpWhbrlNyHQIAMpYOJO6y6f6QNEQWvX0+ycB UOWbs+vBYcgU7pDstllHFCOTVjf3rXH443NqiIZCIfyE8B5sGX2DGDC+dvszpBsG ujAtVzCk0OejZQwghnUJpMLXzagF/HT31eZdFDyZKPiWTkBy6ymb3kPiSFwLzR6z f+surMbnk9oUbAD4SGnR23RG7tYZhukN6gLHW1D897ApBiqmAyl4OuNrn5HhxSiu B/YzOjY0SenyLjQWbZ5ZUj/TfZ/ShhWbcQb3/YVPEHyqNNJmStxLIfWe+CHYRz5B GsKE6eDq9bo0kzcF8S1m9EAGS6v628dDtPXNxw9Av6V9VhIQFEjvnsYMgzqo0GM= =ObbF -----END PGP SIGNATURE-----