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Generate DH Parameters

Security & TLS · pro · solved in-browser (no VM needed) · 3 tiered hints

Write the bash script /home/player/gen-dhparam.sh (bash shebang first) that uses 'set -euo pipefail' for safety and generates 2048-bit Diffie-Hellman parameters into /etc/ssl/dhparam.pem via openssl, then tightens that file to mode 0644. Use 'openssl dhparam -out /etc/ssl/dhparam.pem 2048' and a chmod 644 on the output. (Authored config, graded structurally — the engine isn't run here.)

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How it works

Open the challenge and an in-page editor appears — write your answer and tmpfs.tech grades it server-side against the same checks a real box would run. No VM, no install, no signup needed to try.

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FAQ

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Do I need to install anything? No. Everything runs in your browser.

How is it graded? Automatically and deterministically — your work is checked against the exact rules the live box would apply.