D(HE)ater is a proof of concept implementation of the D(HE)at attack (CVE-2002-20001) through which denial-of-service can be performed by enforcing the Diffie-Hellman key exchange. (read-only clone of the original GitLab project)
Why do you think that https://github.com/CTXz/stm32f1-picopwner is a good alternative to dheater