-----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-espocrm-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-espocrm-15.0-stretch-amd64.iso 1dfbedd4cb3a62b8be029e824691cd8beb078dec1c4887a0bb43dc1bb57589b3 turnkey-espocrm-15.0-stretch-amd64.iso $ sha512sum turnkey-espocrm-15.0-stretch-amd64.iso fdfcff7f04699f154e79d3e752df15c4bbe12086499a17ece8e4ac5595f7449b07bbcfe5683f9f82591f61b06ab1c308a05f2d95d8d2390ae0d861e3eaeac6c3 turnkey-espocrm-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-espocrm-15.0-stretch-amd64.iso.hash turnkey-espocrm-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-espocrm-15.0-stretch-amd64.iso.hash turnkey-espocrm-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlTkACgkQhcJelaFu uU1Ydgf+I2Hj0e6pQ3wMKSaN/W6rtp+dPLsNsjk9ezAoS7KrmH4bNng0Z43FnR5P o03vJAC8D7eBjzodURlWRa7Bq1q3N5M8gObvYU9iPvWCOwckL8vsT69luLaGZJiF xWQgGJwmnAT0a8WbSGL/Zy40V1M3NvtMEBAZgGZK7tjzvSl/WyWoTmIQFHnACMhf CatzBGhxy0oavpF5v4Cr9quoNU473gad2r89TQoRp/mE3xa4XUfP+qK/62KPZSxm UBid9Co0GIy17CO2s4EUzDifSQ7Y2EOIiiGRMbASC5JgmTBoz8B3nO9LiIdmF/u9 89xnA/PYylmx1h1PCmswmWkdzi4Hpg== =IYJv -----END PGP SIGNATURE-----