Signature does not preserve whitspace which causes interoperability problems

[bseddon]

The constructor in class XadesSignature that is passed a stream does not enable the option to preserve whitespace when the XML document is created. This means that any signature created which includes whitespace in <SignedInfo> will not pass the check of the <SignatureValue> digest in the method CheckSignature.

The fix is simple: after the XML document instance is created on line 63 add the line:

document.PreserveWhitespace = true;

This flag is already set when the XML document is created in method CreateSignature.