I need to read an XML file that has chars in some node contents and I need to keep that chars as is and avoid converting them into new lines. Those nodes have xmldsig signatures and converting chars into new lines invalidate the signatures.
I have tried loading the XML with XmlDocument.Load, XmlReader, StreamReader and the special chars ends up converted into new lines.
CodePudding user response：
If the CR characters are literal 0x0D bytes, any conformant XML parser is obliged to drop these or convert them to newlines, under the rules for normalizing line endings in the XML recommendation: see https://www.w3.org/TR/REC-xml/#sec-line-ends.
Generally, any processing of an XML file is going to make changes at the binary level, for example whitespace between attributes will be lost. Your expectation that you can parse and serialize an XML file while preserving its binary representation is fundamentally wrong.
However, the algorithm for XML digital signatures is careful to ignore such variations. It works at a logical level, and should ignore things such as the whitespace within start tags, or the exact representation of line endings. You state that converting CR to NL is invalidating the signature: that sounds wrong to me. The signature should be unaffected.
CodePudding user response：
There are a few ways to read an XML file with carriage return in its contents:
Use an XML parser that supports
as a line ending character.Use a text editor that supports
as a line ending character.Use a tool that can convert
to a different line ending character.