Server Features » TLS Negotiated cipher » CHACHA20 » UnrealIRCd

TLS negotiated cipher: CHACHA20

Percentage of IRC SSL/TLS servers with cipher negotiated as CHACHA20. Showing percentages for UnrealIRCd servers only.

About this test result: ChaCha20-Poly1305 is a widely used secure encryption algorithm. It is said to provide similar security to well-known AES-256 but with better speed, especially on mobile devices. See also this cloudflare blog post for more information. It is one of the 3 ciphers used in TLSv1.3, the others being AES-128 and AES-256. It is also available in TLSv1.2 as an option.
Note on statistics: there is a difference in the gathering of TLS servers between 2017-2019 and 2020-onwards, see SSL/TLS statistics on the data page.

Table

Percentage of IRC SSL/TLS servers with cipher negotiated as CHACHA20. Showing percentages for UnrealIRCd servers only.
Version Sep 2017Dec 2018Dec 2019Dec 2020Dec 2021Dec 2022Dec 2023
3.2 0% 0% 0% 0% 0% 0% 1%
4.0 0% 22% 18% 14% 15% 13% 9%
4.2 0% 51% 53% 54% 52% 48% 48%
5.0 0% 0% 71% 77% 82% 85% 85%
5.2 0% 0% 0% 0% 87% 91% 93%
6.0 0% 0% 0% 0% 90% 93% 89%
6.1 0% 0% 0% 0% 0% 0% 94%
(Download JSON data sets)