-----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-codeigniter-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-codeigniter-14.2-jessie-amd64.iso 98ab255f173d72b2ee7b3b043873ca781be8bd39904fa41afd26515123dfbbb3 turnkey-codeigniter-14.2-jessie-amd64.iso $ sha512sum turnkey-codeigniter-14.2-jessie-amd64.iso d9fd5348ece14595f8dc69d8d4bc508c8afd1a6af0b478136917f3d05de446bccba011caa961902aa4bf4b0e1a4a50432d220c7cc3839ba7ce22eab2f4427051 turnkey-codeigniter-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-codeigniter-14.2-jessie-amd64.iso.hash turnkey-codeigniter-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-codeigniter-14.2-jessie-amd64.iso.hash turnkey-codeigniter-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZAJDhAAoJEIXCXpWhbrlNUFIIAIfSf1BijR4Gs+P4LD+MqvuC okKRZQeMtrDDW0I+5TtyAV6+6x77oXll3XcLNex+GKulhZ1hsJUOwQ63EQ4OTrp2 dvaurEbr9ciCuk8V+KLZfF+IizQ858YnjEzqahVpRBU3OHrcK8NH2rR+4LIbcgCj 85PrnWtRXQa0N6E9qYeVJozLM2gcYzkJ3XzTwL1i5Ae3nXIMpy99wzCyAgOgPith Xq/m1IAwIB4HW1CilRW9+PPV9dnFtvfYEHPDrivSMsyHrC9J0r5RHAY7U29kDl63 3/Zehy7oLhLFicF3oq1SUkCKiUevQ97Ax4APFxl9Vx2RE+UxFLI1RErnSw4WwSQ= =kPhX -----END PGP SIGNATURE-----