-----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-15.3-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-15.3-stretch-amd64.iso f8abf7ad7a8914a1079fc555b58328f520358f70edf8e68553d6a86f58a1e614 turnkey-processmaker-15.3-stretch-amd64.iso $ sha512sum turnkey-processmaker-15.3-stretch-amd64.iso e54fec52f459f58d2feecc30e75d2a2c57f20b95be86f8afb1d08744253bb809204e3da4fc0d5271c5e1006fe126c445c21b18b1a90fc0375cd8271df5f27f58 turnkey-processmaker-15.3-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-processmaker-15.3-stretch-amd64.iso.hash turnkey-processmaker-15.3-stretch-amd64.iso: OK $ sha512sum -c turnkey-processmaker-15.3-stretch-amd64.iso.hash turnkey-processmaker-15.3-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlyZ3P0ACgkQhcJelaFu uU3W5QgA51x0ifqR8LruxD1s/GLsRaK5KYQ5NNrCyLTvwVlaTxFt8dx1ejpaPbLu 8426uPWTt87desr2kcBX3vpR5YPtB3fYzYHGAt2qD66NAvDE4jXWu2RrgobjBeVN YBHTjxNqaDUdtno0N3ZH4IgEIJN+ss74U/DjliqHCFwOChrFa7WbLDHKRz56QGWL 1YD0WKXSelLnY36viwNpc3BPJhYybF2RJsOPN9aBs7Ho8bsplIZrr0DPSmpzPJ0J zMRdN5mz3utJWDQj0k7BMLOeLejhojCfbNDgrnT/H1HUA6JGthC+SWYAeVbAaP7t pIvkCk7QzqnR0CgPgMdnAgDkoegK6Q== =+3MA -----END PGP SIGNATURE-----