-----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-redmine_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-redmine_15.0-1_amd64.tar.gz 064cc5387d5cf489cd725182d57fcfd33fac3d57537b00d8e3cb4cd8df7365e7 debian-9-turnkey-redmine_15.0-1_amd64.tar.gz $ sha512sum debian-9-turnkey-redmine_15.0-1_amd64.tar.gz 2ae4ca618a8792155c45b4ae3131b4cc9603e451aa9702e0a9f43b2b9a588bb0d461a9d0b5137ecd19c742b7b9d0d438fb15548e994303444ece104f186d2e93 debian-9-turnkey-redmine_15.0-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-redmine_15.0-1_amd64.tar.gz.hash debian-9-turnkey-redmine_15.0-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-redmine_15.0-1_amd64.tar.gz.hash debian-9-turnkey-redmine_15.0-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluM+9oACgkQhcJelaFu uU1+XAgAi8420WBXngtcynmzqQE60lHHnWBx7q2rIz3NyoK/PycvTnG8+o5ng8e1 17m5b7qr/muCCPA2Qh7jwn2hqY7QrcqgahnW9M7IYWCkBvfsaJLrpboZ0JpiNMbX 2ftfRG14FUUqP3ihZEudh7uFCNzk+XCTdpn/rC3sC3qdbHFxzRfUCkDSYuYllu7P jiY5xygeJwQRasxJCKO/wLBIrfhHJtHmYMf0PcyqoA2Ruj2Xr4PlwP4b86wvPbnF a/EGbulgyLm8R6GL0SlxksYdkAIDoT3uikh0o9/VfNJ8+YHZrs211C7pFZcEJ+sz hcJErAk/lhAOiPiitHVf1bD0EIlRVg== =Xu5f -----END PGP SIGNATURE-----