dheater

D(HE)ater is a proof-of-concept tool that demonstrates the D(HE)at denial-of-service attack, which targets servers by saturating their CPU through enforced Diffie-Hellman ephemeral (DHE) or elliptic-curve Diffie-Hellman ephemeral (ECDHE) key exchanges over TLS and SSH. It allows users to specify protocols and various settings like key exchange type, socket timeout, and the number of threads for executing the attack, making it suitable for defensive security testing and research purposes. The tool is built on Python 3.9+ and relies on the CryptoLyzer library for traffic generation and DHE/ECDHE support validation.