Clifford Johnson wrote: > I'm attempting to use the 1.4.1 Java reference implementation to process > an XML KeyInfo element and am running into an issue with the KeyValue > object returned. At the moment, I can have a DSAKeyValue, an > RSAKeyValue, or an ECDSAKeyValue element in the KeyValue element. The > current DOMKeyValue implementation handles the DSA and RSA keys but not > the ECDSA keys - that's OK. > > The problem comes when I attempt to cast the KeyValue object returned to > a DOMStructure object to get the DOM Node (using DOMStructure.getNode) > so I can process the ECDSA key myself ... I get a ClassCastException > because the DOMKeyValue object extends > org.jcp.xml.dsig.internal.dom.DOMStructure instead of extending > javax.xml.crypto.dom.DOMStructure. > > The DOMKeyValue implementation keeps a reference to the unsupported > javax.xml.crypto.dom.DOMStructure but doesn't provide a means of > accessing it and org.jcp.xml.dsig.internal.dom.DOMStructure doesn't > provide access to the underlying DOM Node. > > Short of processing the KeyInfo element myself, does anyone have any > suggestions for getting around this limitation? [My application is > targeted at Java 5 -- I'm just trying to use as much "standard" XML code > as possible at this point.]
Not really, I think you would have to find the ECDSAKeyValue element yourself. > I don't know the history of this capability of the library ... am I just > trying to use this capability of the library too soon? (My expectation > is that any XMLStructure object returned from a getContents call built > using a DOM factory would be castable to a DOMStructure object so I can > make a getNode call.) Yes. It seems like it should. I'll open an RFE to address this. --Sean
