-----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-gnusocial_15.0-1_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-gnusocial_15.0-1_amd64.tar.gz 315144626bad9ffc2baf30476d1a8702aef485e369315580ba88025244f52734 debian-9-turnkey-gnusocial_15.0-1_amd64.tar.gz $ sha512sum debian-9-turnkey-gnusocial_15.0-1_amd64.tar.gz c655c6e0e7d00641ed196609ca2d84aec197615fe0979567f657e4fd2b319d1efc86538eb11ff266538349b333b182c14699797ee805b2c7a97b29b235ddf68d debian-9-turnkey-gnusocial_15.0-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-gnusocial_15.0-1_amd64.tar.gz.hash debian-9-turnkey-gnusocial_15.0-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-gnusocial_15.0-1_amd64.tar.gz.hash debian-9-turnkey-gnusocial_15.0-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluM+9UACgkQhcJelaFu uU1tLgf/d2H3A2z9v90gynoLNLBd42XTiZl6Ex/fdTf5qYpOpT5k6+fCiFBjxFMu mut0hoNCh5Z7SQc8t0xxj0tD1ocWjbKLnHcARxNFINVyjbHlQxaZ/g4w0sQw+gwt KmaXiSET4XUL8oyN6nmW/n7qfNTXheKYoDZvgn4Ae7zA6eMU5eb5OlVfPcNQZcb5 kgG8NYwfcn2W54PRJKbzfrPp/+lu2++8NObRQy3RHDWWi7JDLxPJqYewea5X3fc5 nW2EnWTJy89YSvsnZyMVCI8B+tfqSu/WsHtDAxOK1PqUBEmgcEdUQs9vj8PUjCaC l+spRChIWVAFTPslXYt63d/+Oc6p6Q== =4Pe9 -----END PGP SIGNATURE-----