Server Features » TLS Key exchange group » X25519MLKEM768 » Nefarious
TLS Key exchange group: X25519MLKEM768
Percentage of IRC SSL/TLS servers with key exchange Elliptic Curve Diffie-Hellman (ECDH) using X25519 plus MLKEM-768 (Post Quantum Cryptography).Showing percentages for Nefarious servers only.
About this test result: Elliptic Curve Diffie-Hellman (ECDH) using X25519 curve plus MLKEM-768.
This combines classic cryptography with PQC and therefore protects against classical Harvest now, decrypt later. Many IRCds use OpenSSL for SSL/TLS and stable support for this was only added by OpenSSL 3.5.x in April 2025. Support in Linux distros is limited as of 2025 (notably Debian 13 has it, Ubuntu 26.04 will have it in 2026).
Table
Percentage of IRC SSL/TLS servers with key exchange Elliptic Curve Diffie-Hellman (ECDH) using X25519 plus MLKEM-768 (Post Quantum Cryptography).Showing percentages for Nefarious servers only.
| Version | Dec 2025 |
|---|---|
| 2.0 | 8% |