Java: XML canonicalization
The Canonicalizer class at Apache XML Security project.
Initialize the library.
org.apache.xml.security.Init.init(); Convert your XML.
Canonicalizer canon = Canonicalizer.getInstance(Canonicalizer.ALGO_ID_C14N_OMIT_COMMENTS);byte canonXmlBytes[] = canon.canonicalize(yourXmlBytes);String canonXmlString = new String(canonXmlBytes);
Another option is nu.xom.canonical.Canonicalizer if you're using XOM, or if you don't otherwise have a need for Apache XML Security.