-----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-postgresql-14.2-jessie-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-postgresql-14.2-jessie-amd64.iso 2b4203b0d43c22c636a16899bc3ba3bd04d793038d38b0a8c76370851acc7c31 turnkey-postgresql-14.2-jessie-amd64.iso $ sha512sum turnkey-postgresql-14.2-jessie-amd64.iso 8294fb67df278aaee4636bc33152580d131ff486f4ef23e2894475d35179556ed60df721cb1dcb6111cbb034780511542e64401525c9d822a00a96672ab4d0f7 turnkey-postgresql-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-postgresql-14.2-jessie-amd64.iso.hash turnkey-postgresql-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-postgresql-14.2-jessie-amd64.iso.hash turnkey-postgresql-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZAJDpAAoJEIXCXpWhbrlNm7YH/R8lBCkqLBK1gl+Hlu30qGMU Xc6VTRXs/7HXYUnliHvdFsHA+L3QV9TG5Xyv9XQBIocCOhMPYQi+F6pWR8LZsyZb J6nWRZhGO/4oxLqAQ3j+rxv4KEE6h1MqeTN9+xPrB5FTGGWSXBO4wP9kKT15fYjV Lw6y9Si84ag2b8wLH8n6vxj3KFO5B0Dn/bkRVFUpsDSOIQ/29yyaml00HZ95vJ0N RPxlkoCpdzMZtfWdq3Bumk+QtM0GBKGYh1zifcHetoLp87dBdhq2UQ98t49myk+a GB8I4sT6oyWH4Hg4CEjMKMuJCyligH4KROWmJK+RvVK7+Rw8lKhiOLlHZb6DWRY= =25xW -----END PGP SIGNATURE-----