In 2013, Chrome 31 deployed new TLS cipher suites based on Prof. Dan Bernstein's ChaCha20 and Poly1305 algorithms. This was later standardized, with small tweaks, at the IETF as RFC 7539 and RFC 7905. We shipped the standardized variant early in 2016 with Chrome 49. We are now removing the pre-standard variants.


Specification link

Specification currently under development in a Working Group

Status in Chromium


Removed (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No signal
  • No signal
  • No signals


Search tags

ssl, tls,

Last updated on 2022-05-09