-----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-suitecrm-15.2-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-suitecrm-15.2-stretch-amd64.iso 6ddaf5e927cc022ff4c61d1e5bc941f80d8fac4489ff25817e128ccb0ce6dbfa turnkey-suitecrm-15.2-stretch-amd64.iso $ sha512sum turnkey-suitecrm-15.2-stretch-amd64.iso 8615eb176517f89061f21d265b6e2af3bed668db4f0a447b499860e78e452caf78c066d835b701979bfe377d800c8af64bb4a19aa21c3b527682e8aac0eb95f1 turnkey-suitecrm-15.2-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-suitecrm-15.2-stretch-amd64.iso.hash turnkey-suitecrm-15.2-stretch-amd64.iso: OK $ sha512sum -c turnkey-suitecrm-15.2-stretch-amd64.iso.hash turnkey-suitecrm-15.2-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/pjkACgkQhcJelaFu uU3maggA6eGjgVaZ79key6HiiDGIBEuP1mJwlsNvfIsgnumIxGWDKePw1UzmJA+1 JC+5Mpgj2D3397pPA8cCIp93X4r+POV3bTx0kZ4/Em6GF9iJzkuXgYpF6EBPBUPi 11KCniPDbu53amzYMJDYDfvJ9eYhCPSk4XLZfW5Gn4re98QKsViMCrWTTYh8aNDO 1hEAzUJgEVxymYunhcPkDG1ldQGeVRgP4aOpqJ+3jhnbsp2/gqiLfaiJE2TZfGm8 d4mpmorI8FVFMYAGhCFcGBxhS5MypIsDMPyY3VgcziuH70G0D15ihoeqvA3OAYwq EhHmR2rqKv7Fa82F34vXhPlfexwchA== =IUwm -----END PGP SIGNATURE-----