-----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-gnusocial-15.0-stretch-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-gnusocial-15.0-stretch-amd64.iso 6435d6cd5df46c87f8ebe48c2c9b6d1d6a9f2d6a428bf7abe12cdd4249737c32 turnkey-gnusocial-15.0-stretch-amd64.iso $ sha512sum turnkey-gnusocial-15.0-stretch-amd64.iso d6575298e40106647b4b7608df6e431ed50bf35e4eab888b262aeed2b846f765592503dc8aa22530733ff0611384589b79c16ed0d280afb8ef84bdf8ab957c21 turnkey-gnusocial-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-gnusocial-15.0-stretch-amd64.iso.hash turnkey-gnusocial-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-gnusocial-15.0-stretch-amd64.iso.hash turnkey-gnusocial-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlToACgkQhcJelaFu uU23dAgAwb25bg/CulH+IrJC9oeDAukayC2kRhSfrFK+e1SSLttN/LEvxVnRTRMc 0Iku3+7Sh270JNyhVFb5VbwlyjknubfDtLi6XF37NG9jVX/NrpP2S0WP46dlmzPS NDgNjQoIko/RWZxFMh/whnAA9+4czugTRf9aN1RVg0ZsTOuE85aHgKO3ehCKhr7p j1H0jrhalcIrIWPhJSHB63NiJTjQS/jL9ppPJbeAxxlUevt8DP8NPGT5ewcTcsBQ QTX6EIlCV8Lsj5vZaOgY9eaZju4sjhjOW+eY7SFofxCZXc7vYuN0rJauQ3VGLUTB C0LpM7GdlrjDNl93krFuhUS9sanfIA== =e3mj -----END PGP SIGNATURE-----