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From Michael McIntosh <>
Subject Re: CanonicalizerSpi
Date Mon, 26 Jun 2006 14:41:51 GMT
Sean.Mullan@Sun.COM wrote on 06/26/2006 10:09:31 AM:

> Can you be more specific about what the problem is?

The problem is that there is no equivalent to _transformObject in the 
CanonicalizerSpi. An implementation of a Transform can include the 
following code in order to access any parameter values encapsulated in the 
Transform element:

protected XMLSignatureInput enginePerformTransform
        (XMLSignatureInput input)
        org.w3c.dom.Element elemTransform = 

there is no way to access the current CanonicalizationMethod element from 
within the implementation.

> Also, the next release of Apache XML Security (1.4) will include JSR 105 

> (Java XML DSig API). The JSR 105 API allows you to implement your own 
> Canonicalization (or Transform) algorithms (with support for input 
> parameters) by subclassing the javax.xml.crypto.dsig.TransformService 
> class. An initial beta of XMLSec 1.4 is now available for testing: 

How different is code written for 1.4 vs. 1.3? Are there easy to 
understand porting guidelines available?


> --Sean

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