Last year, we raised the minimum TLS Diffie-Hellman group size from 512-bit to 1024-bit. As mentioned then, 1024-bit is insufficient for the long-term. However, metrics report that around 95% of DHE connections seen by Chrome use 1024-bit DHE. This, compounded with how DHE is negotiated in TLS, makes it difficult to move past 1024-bit. Servers should upgrade to ECDHE if available. Otherwise, ensure a plain-RSA cipher suite is enabled.


Specification link

Final published standard: Recommendation, Living Standard, Candidate Recommendation, or similar final form

Status in Chromium


Deprecated (tracking bug)

Consensus & Standardization

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


Search tags

tls, ssl, dhe,

Last updated on 2022-01-14