-----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-mongodb-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-mongodb-14.2-jessie-amd64.iso 4d12035e10ea9e142cdfaf3998e7a3c9f25f0007bf2b9ce164e6acb13cfa3108 turnkey-mongodb-14.2-jessie-amd64.iso $ sha512sum turnkey-mongodb-14.2-jessie-amd64.iso cd46deea71bcbe2f2b3ddf9ccff3ba82af3eb409e804fceaf2255e1ccb6c96ed6590514aca520225e902bf867bfc44fbb48c290ea618e067d5c0fc742d482437 turnkey-mongodb-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-mongodb-14.2-jessie-amd64.iso.hash turnkey-mongodb-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-mongodb-14.2-jessie-amd64.iso.hash turnkey-mongodb-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZVQkpAAoJEIXCXpWhbrlNKEcH/A9mjGlzXecYmEZYsxp5VMC+ eA/yUTe+7zW7kDjtLo+97GVzYIc/nVpfNxFIJVXSlQWoOVmdBlzCm69HuhJvG61s 11u0PhiYZy/SolNktL8vAAs0oxDtpQD0V1cGwJa612kjrvmhVjPWPCojo41op9XB YLU0rp3eSlGpS08rOQ1Ewz3bOilanzrIC80Gj3TM0mWJg+m2Jo+7VvBalCoEjMJl OFaP/Vcenz9FeZ/BZWitYmAB7HdIZute+gljT9mSZTQ47PT/rkJUN1IzxYEaNr9R m63Iocvanie5DiKQX8w55fmpexees3DCtT/sPR1HRXsqzYoIy/M2Gkx8N8UD18w= =JoQA -----END PGP SIGNATURE-----