-----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-zoneminder-15.1-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-zoneminder-15.1-stretch-amd64.iso 0a92b009e1387f05638536e709bc70dd99417a69dcbe2493dff8da722dad1931 turnkey-zoneminder-15.1-stretch-amd64.iso $ sha512sum turnkey-zoneminder-15.1-stretch-amd64.iso 9f4621cf2f9612e16ff69fe580ede44c3755c339763880ab38362905909f84568662ccc55004c12354e2dfef5209ada7109adcfcb3c10dd69155ba8c7681f4ab turnkey-zoneminder-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-zoneminder-15.1-stretch-amd64.iso.hash turnkey-zoneminder-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-zoneminder-15.1-stretch-amd64.iso.hash turnkey-zoneminder-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/pkIACgkQhcJelaFu uU3sDAgA3aDLnvyhd6mbiH7e2Wk7OXbLbuQvpXzOEtT6iMBicphmi/2M4PpZpqeP 920CEpA2ZaFfi7WvLNAPltWbFFLAdWkd18Hptpjb28/YXDT0WztbhwYF9Ny+qc2y closHYqBPBwmbVGPKx7fBbCaI0QmS5FYxMMrgeXTS4Mt2ifQFBuE+jrtXyd51lO4 xVXdC84EoQoDPcrmmmkqe0iJuFVMjmC91tEDeLHI0F5K91xegpwhtsPnhVhECFk8 uAnd0gbCCL/UylypuNR8z6a1CoDnTFX/NHFRo2LSBwgi4GntSitanK+cM8k1TVTq B9Jay5fZANwS/6P7vb22h5iiRzmdBA== =tfrT -----END PGP SIGNATURE-----