-----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-15.0-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-zoneminder-15.0-stretch-amd64.iso 94499bbbcab0879ba6d0eb8a6ca9c6e8820b88557f9a40f2da7efda3b29ee8f8 turnkey-zoneminder-15.0-stretch-amd64.iso $ sha512sum turnkey-zoneminder-15.0-stretch-amd64.iso 0156cee1fea1d0b1b3208bdf459c3407895eb2e4cf3d2a4387c16234691cd04e5e5bddd722ac55a2afe259d927a3042783af566d64322b5782c1042978ad3549 turnkey-zoneminder-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-zoneminder-15.0-stretch-amd64.iso.hash turnkey-zoneminder-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-zoneminder-15.0-stretch-amd64.iso.hash turnkey-zoneminder-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEyBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluD9T0ACgkQhcJelaFu uU2JPAf4lrNuEG1jNT6YU39yAdM0s+AKdFolIGCkFCaCKJLZN6VlVtud7oRVxCTA 5R+8hW5iST95N1Es/FOh0tgd8zm8JuU4GufSyqvEBZgMeD3kTST5DL6r8qyvO9JH mLhBKggeoz87cAoBbyvf+FCkRo6WxjmP8gV1enmq7O/z5yhWXRsegyr5RmB4RI+2 ClexcOCfDK/XzKVCO/JGbfqcQDyGH2yaiafvZEVkPt9aWgfFuTIba8ZRrApPt8Pe ydEEpWY5K8RurL1vhRxptlJZl2y0xn2UdiUpSUPA0pN07nCQnfM3oPrgp3qMCQoo dlGrbWvRdmsOV1aybXNTlP28Me+F =SH+z -----END PGP SIGNATURE-----