Re: [jetty-users] Trusting all client certificates still causes certific

[Chris Haynes <chris@xxxxxxxxxxxxxxxxx>]

I'm no expert in this, but I did explore this area about 5 years ago and try similar experiments.

If my memory serves me right I think you will find that:

1) The level you are working at is the SSL protocol negotiation between the Java SSL/TLS socket and the browser. It is below the level at which Jetty is involved,

2) The sever 'advertises' to the client a list of certificate nodes which it will accept,

3) The client finds a client certificate which 'matches' one of those  nodes offered by the server and sends that certificate to the server,

4) The server checks the client certificate and, only then, if all is well, establishes the SSH session.

By 'matches' I mean this:

All certificates have a chain of authorities which have authenticated that certificate.

The Java server has a list of trusted root certificates.

To be accepted, a client certificate has to have been authenticated by one of the authorities listed in the Java security set-up, and that authority must have been specifically named in the SSL hand-shake.

It is possible to use your own private set of client certificates by:

1) Creating your own 'root' certificate,

2) Putting that root certificate into the Java security system's list of trusted roots,

3) Identifying that root in the SSL set-up (using the API provided by j
Jetty),

4) Having that root certificate sign a batch of client certificates,

5) Giving each browser client one of this family of certificates.

To the best of my knowledge it is not possible to just use any 'random' client certificate and have it passed through to your Applet under Jetty for you to do your own authentication.

HTH

Chris Haynes


On Monday, February 18, 2013 at 4:25:23 PM, Ago Allikmaa wrote:
> With 9.0.0.RC0, the certificate list popups were the same (Firefox and
> Chrome listed the ones in trust store, Opera listed all), but once I 
> select a trusted certificate, I get the same error I got with M3 when 
> there were no compatible certificates in my local certificate list or I
> chose one in Opera that wasn't in the trust store (Firefox: "The 
> connection was interrupted", Chrome: "Error 107 
> (net::ERR_SSL_PROTOCOL_ERROR)", Opera: "Could not connect to remote 
> server"). So now even the certificates in trust store don't work. I 
> double-checked this, switched between RC0 and M3 several times with no
> other changes. "setTrustAll(true)" had no effect at all, the results 
> were exactly the same as without it.

> Ago

> On 18.02.2013 3:57, Joakim Erdfelt wrote:
>> Update to 9.0.0.RC0 and try again.

>> There have been many updates to that area of the code since 9.0.0.M3

>> --
>> Joakim Erdfelt <joakim@xxxxxxxxxxx <mailto:joakim@xxxxxxxxxxx>>
>> webtide.com <http://www.webtide.com/>
>> Developer advice, services and support
>> from the Jetty & CometD experts
>> eclipse.org/jetty <http://eclipse.org/jetty/> - cometd.org 
>> <http://cometd.org/>


>> On Sun, Feb 17, 2013 at 3:47 PM, Ago Allikmaa <maxorator@xxxxxxxxx 
>> <mailto:maxorator@xxxxxxxxx>> wrote:

>>     Hello,

>>     I am trying to implement a simple SSL server which requires a
>>     client certificate, but all certificates are "trusted", as I plan
>>     to implement the validity check separately later. My problem is
>>     that it doesn't seem to be possible to bypass the trust store, not
>>     even by setting "trustAll" to true. I am using Jetty version 9.0.0.M3.

>>     I have two test certificates. One of them is in the trust store,
>>     the other one isn't. I added both certificates to Firefox (18.02),
>>     Opera (12.12) and Chrome (25.0.1364.84). Firefox and Chrome only
>>     show the trusted certificate in the popup where it asks me to
>>     choose the certificate (how does the browser even know which ones
>>     server "trusts", does it send all of its certificates to the
>>     server and asks if they're trusted?), Opera actually lists both,
>>     but using the one that is not in the server's trusted lists
>>     results with "Could not connect to remote server".

>>     Not having any certificates in browser's certificate list also
>>     produces odd results - instead of some kind of informative error
>>     Firefox informs me that the "connection was reset", Chrome says
>>     "Error 107 (net::ERR_SSL_PROTOCOL_ERROR)" and Opera says "Could
>>     not connect to remote server". On most websites I have
>>     encountered, the error is a bit more informative (such as
>>     ssl_error_handshake_failure_alert). Is this intentional or just
>>     too insignificant to fix?

>>     Here is the code for the SSL context (I'm using embedded mode):

>>             SslContextFactory contextFactory = new SslContextFactory();
>>             contextFactory.setTrustAll(true);
>>             contextFactory.setKeyStorePath("./jettystore.jks");
>>             contextFactory.setKeyStorePassword("testpass");
>>             contextFactory.setTrustStorePath("./truststore.jks");
>>             contextFactory.setTrustStorePassword("testpass");
>>             contextFactory.setNeedClientAuth(true);

>>     (The application is really simple at the moment, without imports
>>     it's barely 40 lines.)

>>     Also, while I'm already asking, are there any examples out there
>>     for accessing certificate information (will specify later) using
>>     HttpServletRequest and HttpServletResponse objects passed to a
>>     servlet? I'd like to do the actual verification in a servlet, so I
>>     could invent my own output in both failed and succeeded
>>     certificate check. The actual verification is basically an OCSP
>>     query, but I figured since I have an example for the exact
>>     verification I need to do in the form of a call to openssl, I
>>     might invoke that until I find a way to do it more elegantly. The
>>     information I need to access are the equivalents of Apache's
>>     SSL_CLIENT_CERT and SSL_CLIENT_I_DN_CN. The OCSP server
>>     certificate file and CA certificate file for the OCSP query depend
>>     the value of SSL_CLIENT_I_DN_CN.

>>     The verification itself verifies a smart card certificate. One
>>     reference implementation of it using PHP and openssl can be found
>>     at http://id.ee/index.php?id=30338 (not in English, the link named
>>     "Näidisrakenduses" near the end of the article points to the .zip
>>     file). There's also a description for verifying them offline by
>>     using revocation lists ( http://www.id.ee/index.php?id=35753 ),
>>     but I'd prefer a real-time check. If some good person really wants
>>     to help or cannot bear the thought of invoking a separate
>>     application for verifying the certificate (portability! IT'S
>>     GONE!), maybe you can suggest a good way to implement the same
>>     thing properly/elegantly in Java.

>>     Thanks for taking the time to read this,
>>     Ago
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