Validating a SWT Token REST WCF Service

Question

I'm currently working on a WPF client, which obtains a SWT token from Windows Azure AppFabric ACS. With this token I want to consume a RESTful WCF Service. I used this tutorial to obtain the SWT token and it works perfect. With the help of this MSDN tutorial I created the RESTful WCF service.

The problem is that the token may have the wrong format, because the token validator can't validate it (Error in the IsHMACValid method of the token validator, swtWithSignatur.Length == 1).

Example of a token with which I contact the server:

{"appliesTo":"http://localhost:7100/Service/Default.aspx","context":null,"created":1326996221,"expires":1326999821,"securityToken":"<?xml version="1.0" encoding="utf-16"?><wsse:BinarySecurityToken wsu:Id="uuid:74ba5667-04ea-4074-9544-aaafb570c648" ValueType="http://schemas.xmlsoap.org/ws/2009/11/swt-token-profile-1.0" EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">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</wsse:BinarySecurityToken>","tokenType":"http://schemas.xmlsoap.org/ws/2009/11/swt-token-profile-1.0"}

In the Windows Azure Management Portal I've selected SWT as token format for my Relying Party Application. According to the first tutorial the format for the SWT token looks good, but the token validator won't accept it.

PS: If someone is trying the second tutorial (How To: Authenticate to a REST WCF Service Deployed to Windows Azure Using ACS): I think there is an error in point 11 in step 3, where you have to modify theweb.config file (the system/webService section doesn't exist). The configuration should look something like this:

<?xml version="1.0"?>
<configuration>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true">
      <add name="SWTModule" type="SecurityModule.SWTModule, SecurityModule" />
    </modules>
  </system.webServer>
</configuration>

Answer 1

Hallo Robar666,

Ich sehe Du hast es gelöst:

Validating a SWT Token REST WCF Service

„The base64 string inside of the BinarySecurityToken is the SWT you're looking for.  If you run Convert.FromBase64() on it, you'll get the standard name-value pairs of a SWT.“

Noch ein Interessanter Link zum lesen (man sieht die Implementation von IsHMACValid)

How To Request SWT Token From ACS And How To Validate It At The REST WCF Service Hosted In Windows Azure

Robert

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Robert Breitenhofer, MICROSOFT 
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