Re: [TLS] weird ECDSA interop problem with cloudflare/nginx

Viktor Dukhovni <ietf-dane@dukhovni.org> Mon, 25 July 2016 20:15 UTC

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From: Viktor Dukhovni <ietf-dane@dukhovni.org>
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Subject: Re: [TLS] weird ECDSA interop problem with cloudflare/nginx
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> On Jul 25, 2016, at 3:08 PM, Martin Rex <mrex@sap.com> wrote:
> 
> https://regmedia.co.uk/2015/07/14/giant_weta_mike_locke_flicker_cc_20.jpg

FWIW, OpenSSL interoperates with this server:

Peer signing digest: SHA512
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 4169 bytes and written 310 bytes
---
New, TLSv1.2, Cipher is ECDHE-ECDSA-AES128-GCM-SHA256
Server public key is 256 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.2
    Cipher    : ECDHE-ECDSA-AES128-GCM-SHA256
    Session-ID: 740096F3B8F9BD08D40028405CA2631E0348BE65BE7453635E1A970081CAE3CE
    Session-ID-ctx:
    Master-Key: 17FDD891614358874800B6F152D4297E715FE20C74205A43BD803DA91CD891287677672AE4E4F7FBCD989FFE675BF22F
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    TLS session ticket lifetime hint: 64800 (seconds)

The server then responds to an HTTP "HEAD" request:

HTTP/1.1 404 Not Found
Date: Mon, 25 Jul 2016 20:09:52 GMT
Content-Type: text/html
Connection: keep-alive
Set-Cookie: __cfduid=dc03aaa6d430491fcd2a736eaa790f5e11469477392; expires=Tue, 25-Jul-17 20:09:52 GMT; path=/; domain=.regmedia.co.uk; HttpOnly
Cache-Control: private, no-cache, no-store, max-age=0
Accept-Ranges: bytes
Server: cloudflare-nginx
CF-RAY: 2c8240858296187c-EWR

-- 
	Viktor.