-----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-9-turnkey-punbb_15.1-1_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-9-turnkey-punbb_15.1-1_amd64.tar.gz 87a699ea173b48ad9eee383f0a2762289c258e5852ea5c38c491abd93da5e7f2 debian-9-turnkey-punbb_15.1-1_amd64.tar.gz $ sha512sum debian-9-turnkey-punbb_15.1-1_amd64.tar.gz d55b47df52ea2dc8467f9abcd9cadd3286c7bbb0ac03404b0bd9f909395972244232c51b659aa0de547f750bac204f8205b190c2877fe6126c20614cedaa0ac4 debian-9-turnkey-punbb_15.1-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-punbb_15.1-1_amd64.tar.gz.hash debian-9-turnkey-punbb_15.1-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-punbb_15.1-1_amd64.tar.gz.hash debian-9-turnkey-punbb_15.1-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEyBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/phIACgkQhcJelaFu uU3YjQf4vmST0pf6xhquBrE0Q+SdDoyrQk3pGkiVzc77B9nf1udq8WVAl8jvydAz NTMI6F6w/V+uGhzQT2Fm5b7cnFmyvaOyTeWq4mLY3sofNM2IcKOvuQFWoUGqUjOY Egv8YqHOMtsdGj6g33MHxVjq+5nI+YwCBxwrqBrLhbW0bU8f6/GMsWa0wFN8NsKT t7rg1lfXnvPVu/xHVmMUVU1XAZUPbworOOS4tLsyeCbifrYs/XMwhjFTANsMWv0w LF3++wVUaeOrXwZKn0hfjwS983QdK0MzsKxO3p+zC+iHpOlFJGd6qkxd6HrpUnvz iGrCxBn1hvzkdKYpl9ML7fCq3o+C =UG1i -----END PGP SIGNATURE-----