-----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-collabtive_15.2-1_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-collabtive_15.2-1_amd64.tar.gz cf7a8706fc7ec7f303f63a7ef5f174eff0c3d5a0e86548f79d647152b68f2a62 debian-9-turnkey-collabtive_15.2-1_amd64.tar.gz $ sha512sum debian-9-turnkey-collabtive_15.2-1_amd64.tar.gz 7f965274a4a9e48d390b94f888b7fc28aa864d4831513d8852c4fd855664ad21779da1c23a17397b8bcb53dba8d01955a2d099c7dfd32a43fd5993a241089967 debian-9-turnkey-collabtive_15.2-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-collabtive_15.2-1_amd64.tar.gz.hash debian-9-turnkey-collabtive_15.2-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-collabtive_15.2-1_amd64.tar.gz.hash debian-9-turnkey-collabtive_15.2-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEyBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/pg0ACgkQhcJelaFu uU1ZGwf1GlLntqg94mZt9HfDqYvd8dbRJzza4bavBTW0xSJXLZnFKFv3IIWmy7ub Cb5MtBqLVNig/aiGISqnaXCw3OwNUNcEuKgoOMjBTy2tBV12Ge/hAbrj7H/6Z3nq RpeuPSLnOqavtr5WWvv8l/BFBuOKjymU1VV3YbLxFOiVdsRLiIEHprL+IEye6LZt i+chSqub066x47eaz+AA+RxEbaH6fS2MuNY4xlwb8ruEM7rtFbp0WQPxX8dIbPCF Tovu0+rjCG6LHONNaEbO9El/mgDn1nwRG+ZJcDAIm+YdQ+H/aKlnO6T33q1eq/mS G3B5Rjp5oztTX7nCTyHdvutw13qp =eEkr -----END PGP SIGNATURE-----