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When will Firefox support CipherSuite TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384?

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  • 9 have this problem
  • Last reply by guigs

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When will Firefox support CipherSuite TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384?

The only browser I found that works is Internet Explorer Windows 8. I also only tested this cipher suite on IIS on a Windows 2012 server. I need to have this work in both android mobile and windows desktop browsers.

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I did some research and it looks like the logic a while back happened here: however this is slightly outdated. But it looks like it was implemented:

This is the more updated reference as I do not see that configuration in the security entries of about:config:

More research I found that for RFC5288 only these were supported:

GCM patch seems to be submitted but not sure whats next

I do not have an estimated date for you however the security mailing list may also be a good place to ask:

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Thanks guigs2,

I copied the wrong Ciphersuite. The one we are using is:


I guess we have to wait for NSS to support these higher cipher suites. Also I will need this to work on the Android Firefox client in the future.

Modified by mjbusch

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HI mjbusch, I pinged the bug, I would recommend filing a security bug in reference to this, but afaik they use the same NSS version on mobile.