-----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-elgg-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-elgg-15.0-stretch-amd64.iso a17b28eb5ce3a12916a93c02b2abb319bc1bb5bcafff7aac46f2af2d0ee57179 turnkey-elgg-15.0-stretch-amd64.iso $ sha512sum turnkey-elgg-15.0-stretch-amd64.iso 761c832d083fcf4c3bf4f9abc4f2b3b14c273db9034d82090b9335571c41415bf207e259913705d89027af0a83102703a6bbdbf2f19676913f3d527d679ae326 turnkey-elgg-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-elgg-15.0-stretch-amd64.iso.hash turnkey-elgg-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-elgg-15.0-stretch-amd64.iso.hash turnkey-elgg-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlvITPAACgkQhcJelaFu uU2FSgf/czkhOsv6p7XHeN7vChRORJIUWRHW8+0KmB36fN4Ds6mg/IPbtRR2hOWs 6rEn3GpDlS5lJ0imYveACpKx2UyLfw53zNoUuBFyv0UEYxYJ67Fp2BTDndfxcr5D 59/k1r24lxE2QSyrer7Guwtbbi7f7MdfTg00HpyVjyhBrCGCdiRRkE+uVzDAHQsh J+DU9jWR/X1d1ZmqiUy2kArcXZD9YJBx3kfiecRcRIXOJW4OMAuc/wDs42WvVgUD kpCSd+bqXhQjqHRVlJwOnDiWaO0Z8ucdmA6f20Z7plZbyGhuz0zpviwob/1u7hZP O2IIevwYoPSkY3Gitnao3ku+bLvG4g== =ESUf -----END PGP SIGNATURE-----