Still stuck with problem. Re: Problem decrypting elements

Hello all,

I'm still stuck with this problem and don't know what else to try.  I'm
basically using the sample code with some modifications to handle multiple
elements.

Encryption works fine with child elements or contents both when a single or
multiple elements with the same name are encrypted.  However, decryption
only works when there is a single element or content node to decrypt.  If
there are more, an exception is thrown:

  Oct 30, 2007 2:28:18 PM org.apache.xml.security.encryption.XMLCipher
    decryptToByteArray
  SEVERE: XMLCipher::decryptElement called without a key and unable to
    resolve Exception in thread "main"
    org.apache.xml.security.encryption.XMLEncryptionException: No Key
    Encryption Key loaded and cannot determine using key resolvers

Stepping through the code in my IDE, I can see that the key gets loaded. 
What is missing, though, is the KeyInfo.  Method
decryptToByteArray(Element element) in class XMLCipher tries to get the
KeyInfo:

   KeyInfo ki = encryptedData.getKeyInfo();

When ki gets evaluated it is null, however, and the exception is thrown. 
Again, it only happens when multiple elements are encrypted.

Obviously, I'm missing something here but neither the documentation nor the
email archive have given me any clues on how to solve this.  Any help will
be greatly appreciated.

Thanks,
Wolfgang







Quoting Wolfgang Freis <wolfgang.freis@xxxxxxxx>:

> Hello,
>
> I'm new to working with XML encryption and have come across a problem.
> Neither the email archive nor have brought me closer to a solution.
>
> Google Starting with the sample files Encrypter.java and Decrypter.java
> I
> have managed to en- and decrypt elements by name.  However, decryption
> works only when there is only one element encrypted.  If I encrypt
> multiple elements by name--as siblings or as children of different
> parents--the decryptor throws an exception:
>
> Oct 26, 2007 3:56:45 PM org.apache.xml.security.encryption.XMLCipher
>     decryptToByteArray
> SEVERE: XMLCipher::decryptElement called without a key and unable to
>     resolve
> Exception in thread "main"
> org.apache.xml.security.encryption.XMLEncryptionException:
>     No Key Encryption Key loaded and cannot determine using key
> resolvers
>
> My IDE tells that the key file was loaded and, as I said, the decryption
> works fine when only one element of the XML is encrypted.  I tried
> decrypting by iterating over the NodeList returned from
> getElementsByTagNameNS(namespaceURI, localName) and trying to just grab
> the first item.  Both generate the same exception.  From what I can see
> in
> the IDE is that the method decryptToByteArray(Element element) called
> from
> doFinal( document, encryptedDataElement) throws the exception, but it
> escapes me why that happens.
>
> Any help will be greatly appreciated.
>
> Thanks,
> Wolfgang
>
>
>