In this post, I showed how to verify XML digital signature or XmlDSig. In this post, I’m going to show how to sign an XML using a signing certificate. For the XmlDSig to be valid, it requires a custom Filter transformation. This tells which node in the XML content to be signed. Then, we add … [Read more…]
In the previous post, I showed how to verify XML digital signature using SignedXml object from namespace System.Security.Cryptography.Xml. However that method could only verify signatures signed by .Net and fails to verify a valid signature signed via front end using Javascript or a valid signature with custom transform nodes. Chilkat is not a free library … [Read more…]
In my last post, I showed how to read an XML digital signature. In this post, I’m going to show how to verify the XML digital signature to check if it’s valid or not.
For a project I’m working on, I have to read in an XML digital signature – XmlDSig. In this post, I’m going to show how to read an XmlDsig value using SignedXml object from namespace System.Security.Cryptography.Xml. I add a class to hold my signature data The following is the function to read the XmlDsig value