Server Features » TLS Key exchange group » P-256
TLS Key exchange group: P-256
Percentage of IRC SSL/TLS servers with key exchange Elliptic Curve Diffie-Hellman (ECDH) using P-256 (prime256v1, secp256r1).Showing percentages by IRC server software.
About this test result: Elliptic Curve Diffie-Hellman (ECDH) using P-256 curve (also called: prime256v1, secp256r1).
This ECDH with classic cryptography is widely used today. However, it is not a PQC algorithm, so is vulnerable to Harvest now, decrypt later.
Table
Percentage of IRC SSL/TLS servers with key exchange Elliptic Curve Diffie-Hellman (ECDH) using P-256 (prime256v1, secp256r1).Showing percentages by IRC server software.
| Software | Dec 2025 |
|---|---|
| charybdis | 4% |
| Hybrid | 53% |
| InspIRCd | 54% |
| IRCNet | 7% |
| IRCU | 8% |
| Nefarious | 4% |
| ngircd | 7% |
| Ratbox | 84% |
| SynchronetIRCd | 100% |
| UnrealIRCd | 4% |