Server Features » TLS Key exchange group » DH » charybdis

TLS Key exchange group: DH

Percentage of IRC SSL/TLS servers with key exchange Diffie-Hellman (DH) - Any bit size (old, rarely used).
Showing percentages for charybdis servers only.

About this test result: Old-style Diffie-Hellman (DH) key exchange. This uses static keys and provides no Forward Secrecy. It's old and rarely used.

Table

Percentage of IRC SSL/TLS servers with key exchange Diffie-Hellman (DH) - Any bit size (old, rarely used).
Showing percentages for charybdis servers only.
Version Dec 2025
3.4 50%
3.5 5%
(Download JSON data sets)