-----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-tomcat-apache-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-tomcat-apache-15.0-stretch-amd64.iso 7c440de2cfe32d4361ae7cdb359f408e7b3f40eb1b48ceec06c0c2afd32c03af turnkey-tomcat-apache-15.0-stretch-amd64.iso $ sha512sum turnkey-tomcat-apache-15.0-stretch-amd64.iso 727156cdef6e271e6837ea36d60d256a1808319a09629e01b8d191e77645a86aac5ff5e456234885930870afbc635b915fbbdd2eba77240b149310fdee3daf65 turnkey-tomcat-apache-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-tomcat-apache-15.0-stretch-amd64.iso.hash turnkey-tomcat-apache-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-tomcat-apache-15.0-stretch-amd64.iso.hash turnkey-tomcat-apache-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluD9TwACgkQhcJelaFu uU2LDwgAmRu9gdSzbwGqV85v0AopFJy2fedkGdnCh1rXZxwRHdvwIprM7fh8ICAG tW0Sd62urcwPSHsCaF2LgZosqTyqUjxbJlGFOPkQqzhWnIXCUylgqxkM+hoEp+zZ hGO34q5ZNY32jHxGYNEPH27Uiom0BW2c9j+1qFYTGcFR4xzjPg+s8b6z8KXE/fi+ J00JqZ17yJXt4fCVF9sr0H7+f0Wd4tBTtBpZRjIKtUkYEYrs9PxhQsZLh5EpPnw1 2vnZLhnAQq/sYNJ47JKasW2vJotsnUYNzFGqs8++EZAgucnvSb7E6REHUpG1i7LH kfb/f8QPJycvK7DnWcy17w11L1xESg== =WyPy -----END PGP SIGNATURE-----