-----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-processmaker-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-processmaker-15.2-stretch-amd64.iso 0471bd293dbeb5d133b21277f2abf325e57c56339e5189f9a3c9994aea7e1cef turnkey-processmaker-15.2-stretch-amd64.iso $ sha512sum turnkey-processmaker-15.2-stretch-amd64.iso 83b2126d9f3fa0c0917becacaa3f93ce978f364f5113a06bebe2376c012f58f4d63388a404dde70d6b697967c6376dd15a02fdb43e64d7122cec510a73dd72df turnkey-processmaker-15.2-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-processmaker-15.2-stretch-amd64.iso.hash turnkey-processmaker-15.2-stretch-amd64.iso: OK $ sha512sum -c turnkey-processmaker-15.2-stretch-amd64.iso.hash turnkey-processmaker-15.2-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlxhNwEACgkQhcJelaFu uU18kgf/fqj2WDPWIXkzow9zy/+hjh9P1XH9XFIo7t4GgJwF8DMothBgR/1n2zzH C1Td78Zq3RUKAXs1p1jTE1ibhrJyR3tfQN8XA+3Uulgqanlh49gjtBxtA3baEBMi vgMpmWTv5ClKIisyPkoTas7OomzZY8EIU+56q6n6eCtDzv+hMh0M6ACpXxfIhuCz pf/8Jnb4UCl5b/uSr+Nmw7ctyKBhR5E6vVe2naR1x9cnKjaFdoCu+HQrAupLJbMS QuHySQF1ZOqSFX+5dZWyiGhp8fKcTzJmrMhSMP6uSDg4i+AshUpQu0OlckYlqaSd Hlx/37XItR5zThZKmBoAFlDmJYAzmg== =XS6q -----END PGP SIGNATURE-----