1) You are signing an XML file and want to have XML signature in a
*separate* XML file.
In this case, you might sign the XML file using external XML signature
and then this file will be treated as a binary file (i.e., never parsed->no need
in c14n)
2) You have an XML file and you want to insert XML signature in the *same* file (or construct a new XML file that contains original file *and*
thew signature).
In this case you must do cannonicalization because c14n is a way to "serialize"
XML document from DOM representation to a binary file.
BTW, what kind of file are you trying to sign and do you use xmlsec library?
Some people did performance testing for xmlsec and it showed pretty good
results (for example, signing 10 MB file in 55 sec).
Aleksey.
David Wen wrote:
Hi,
We have an application where the XML file is
huge and it takes hours to canonize it but the
signature is very fast. My understanding of the
XML Dsig spec is that, although the canonization
algorithm is mandatory, but it is ok to not apply
it, right?
Thanks!
David Wen
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