-----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-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-15.0-stretch-amd64.iso a47de6f730dfef2702f9a12499b949fe26b126b7436ae812d4280235fe091911 turnkey-tomcat-15.0-stretch-amd64.iso $ sha512sum turnkey-tomcat-15.0-stretch-amd64.iso da6318060837ff688fb89aa676d461badd3cecbebb4b18e312c8b9b0c5082564b05af43c8e7ebeb14af468efcdf898a4226aea378c4b4406417e98751c633423 turnkey-tomcat-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-tomcat-15.0-stretch-amd64.iso.hash turnkey-tomcat-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-tomcat-15.0-stretch-amd64.iso.hash turnkey-tomcat-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluD9TwACgkQhcJelaFu uU1zGQgAkEIcUUpNo9ZajNMTgUDDCqFIbv5DiJtjlY9mUYuy+lGh0wzBvMf1q773 yuofCutp/N0NlzZkah3MkZ669mc6eN3v7Z3LleEcRZBce8IwAh0GWA3i8ZOoVo7t ScvAvdsxrGg9htVt3ykLbpb95I8oZw2nKNkxyHcXKtX/qAHF/RJD/uvBWcuevch2 Qz2gCRNg1SC4cdMeVSlKiDTJ5hr56sXR4XllX5TJ+Z09xVw10ieF0CDmf/SGHGlW MYCPhrC/sDeLEZStxDBD2b8Jxn3g71CMBhssde/u/17EXbpOT7vago9+B9hEFhWw C44YKfp+9pzV/ezcehDZhJvm4oO6Ww== =pnlK -----END PGP SIGNATURE-----