#
logjam
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This repository offers a thorough explanation of the Diffie-Hellman export grade attack, accompanied by a demo.
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Apr 18, 2025 - Python
Browser-based downgrade demo — RFC 8446. Strip X25519MLKEM768 from the ClientHello and watch two PQ-capable endpoints agree on bare X25519. Success is the alarm. Negotiation happens before authentication — the fix isn't detection, it's binding the transcript into the key. FREAK and Logjam were this shape. No backends.
tls cryptography cryptanalysis x25519 post-quantum-cryptography freak logjam tls13 downgrade-attack crypto-lab ml-kem rfc8446 hybrid-key-exchange transcript-binding
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Sep 22, 2026 - TypeScript
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