-----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 debian-8-turnkey-concrete5_14.2-1_amd64.tar.gz.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 debian-8-turnkey-concrete5_14.2-1_amd64.tar.gz e7b27da846f12d42bf7a75658576e8794f4a146ad342a48caabf03e50bcd1c94 debian-8-turnkey-concrete5_14.2-1_amd64.tar.gz $ sha512sum debian-8-turnkey-concrete5_14.2-1_amd64.tar.gz 89ed26aef313e051df1e469dd896aaabba51ce3e554ca8c25faabe0d2045b3a35a221b5547978a8f5aab4fb964ba852cfc2af021b3693044586951c05ccb3d53 debian-8-turnkey-concrete5_14.2-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-8-turnkey-concrete5_14.2-1_amd64.tar.gz.hash debian-8-turnkey-concrete5_14.2-1_amd64.tar.gz: OK $ sha512sum -c debian-8-turnkey-concrete5_14.2-1_amd64.tar.gz.hash debian-8-turnkey-concrete5_14.2-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZNo90AAoJEIXCXpWhbrlNUQoIAI9N9/Qot8D3LlUuq+FOX83U xja4lAitM/qoeetfDzx4hmdeENf5WWUCEjJGvFMRNEPV3uRzPjfbjOPiWOtNPK5J TsOx3PvA+HzuB+2Dw+7sJZrjPkEmuZSLjiICcflg73Es5XCT9GdjzNTwDD2JeUiI 0vihrn9xoXZFIkGlAs9IF5I7/1g+qw6GC84Xk5Ab9BHoFHPqlrLJSt0OjRxd7H3X QI9MJeIBLDyPo6chb5DGRf6k9Pi6mSIb8ReV8ABsPf+0l4+gcTpQZ3BNhZJsKR4o h3yMrBddA8sH1nr4B1nGixRMrDH0Bvl7k+eZBaTC30RtiZAJAdh2e0mQWfQ9XJE= =8vd0 -----END PGP SIGNATURE-----