Wednesday, August 26, 2009

So that's what WebLogic Certificate Registry is for...

<11/08/2009 12h10min32s ACT> <Error> <> <BEA-000000> <CertPathBuilder does not support building cert path from class [Security:090596]The WebLogicCertPathProvider was passed an unsupported CertPathSelector.

In a previous post I talked a little bit about how the WebLogic Sercurity Framework can be extended to support OCSP and CRL checking. Besides being used in SSL validation, the CertificationProviders are used in validating signatures in web services messages. When a response is received, it is typically signed. The way that the certificate that signed the response is identified is through a <wsee:SecurityTokenReference> This refernce can be of several types - SubjectKeyIdentifier, IssuerSerialNumber, Thumbprint#SHA1. You can use use what is called a direct-reference, which is to say the actual certificate itself is passed in the message.

Assuming that you don't want to pass the certificate itself (they're big), and you're passing one of the referenced tokens back to WebLogic Server, how should it find it? CLV = Certificate Lookup and Validation. In the OCSP/CRL check post, we focused more on the validation part of the CertificationProvider. Here, we're interested in lookup. The OOTB CertificationProvider which essentially wraps the JDK's provider only supports direct references (X509). In order to support more other references, like say SubjectKeyIdentifier, you need to configure the a CertificateRegistry provider. You add the list of certificates from the WLS admin console, and now the signature on the response can be validated.

Basically, if you're using WS-Security, then you need to configure a CertificateRegistry.

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