-----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-15.0-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-suitecrm-15.0-stretch-amd64.iso 5bde1aeed00f7a5e4795404edbb508ebc3d3411deb8da8b2bdebd19af15749ca turnkey-suitecrm-15.0-stretch-amd64.iso $ sha512sum turnkey-suitecrm-15.0-stretch-amd64.iso 8890ba403f4de6bfd5298bf4d11e02e2e5ac3fb355803d606829075bf74c558bf16003c81d86d76617ac76816ccc9573f9b0440058c16a5c7a6bbc18f62f56a5 turnkey-suitecrm-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-suitecrm-15.0-stretch-amd64.iso.hash turnkey-suitecrm-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-suitecrm-15.0-stretch-amd64.iso.hash turnkey-suitecrm-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluD9TwACgkQhcJelaFu uU1TWggAqSJ8mC0y6bZhOEAwJMKNIlK3Ms+iZMJ5KMQxW03qZI24Y6rUhzgca3X8 O4AdP7f+1zVCblImh7C1CtVBykZDGM7xQRYB0hBsAqtFtKez3D5Jd1Pox5GVgZzT 4dXRuQBc0yixVvquKNtETlhgsXntBMJZiiYBOpJQnpZ72zw5tQrGxKhFBnCi9PCL aSvN+0mJ7b+4Nh3IALQPyYAOCUqE6wGWJmL5zJcLjDFkUkXcvxEAGX35jWh1DvZZ b1AbPt0MHRBnJI2llue1vTJGoGtm7vbtUoGpdTtzy+1zzqZwJpOOlMRppzlt2udG CokfQ3TIhJxLLRS8naCWXFV0ZjOAbw== =LfeV -----END PGP SIGNATURE-----