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From Reindl Harald <>
Subject Re: H2 compatible ciphers
Date Sat, 17 Oct 2015 09:50:56 GMT

Am 17.10.2015 um 11:18 schrieb Kaspar Brand:
> Another - quite radical - approach would consist of using a whitelist,
> which consists of a single cipher suite only: given that section 9.2 of
> RFC 7540 states
> "Implementations of HTTP/2 MUST use TLS version 1.2"
> and section 9.2.2 further says
> "deployments of HTTP/2 that use TLS 1.2 MUST support
> TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 [TLS-ECDHE] with the P-256
> elliptic curve [FIPS186]"
> then "H2Compliance on" would only have to make sure that this exact
> suite is negotiated. (What this MTI cipher suite also means, IINM, is
> that you can't run an RFC 7540 h2 compliant server with an ECDSA key
> only, actually... not sure if that was really an intended effect of this
> requirement.)

terrible idea because it would lead to disable new, safer and 
recommended ciphers in the future until somebody adds them to the whitelist

so users (clientside) would have to wait for openssl *and* apache after 
their browser has already support and with the current release cycles of 
all major browsers it's likely to end that way

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