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Dynamics 365 Community / Forums / Microsoft Dynamics NAV (Archived) / Signature for XML file
Microsoft Dynamics NAV (Archived)

Signature for XML file

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Posted on by Andrey Baludin 3,943

Hello Team. I really stuck in a rut with next problem:

  1. I generate XML file from NAV 2018.(web request)
  2. I have *.crt and *cer files (signed certificate)
  3. I need to generate signature for XML file using *.cer or *.crt file and I have no idea how to do it using NAV.

I even agree to use C/AL and dotnet variables in NAV2018 instead of AL and extensions if there is any way to generate signature (because i suppose that it's impossible to do without dotnet).

Any help will be appreciate.

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I have the same question (0)
  • Olister Rumao Profile Picture
    Olister Rumao 4,009 on at

    Hi Andrey,
     Why don't you use Azure Functions and call it from the NAV side

  • Suggested answer
    Stefano Demiliani Profile Picture
    Stefano Demiliani 37,172 Most Valuable Professional on at

    Without using DotNet I think it's actually not possible. Personally for a task like that I've created a DotNet addin that I'm using from NAV.

  • Andrey Baludin Profile Picture
    Andrey Baludin 3,943 on at

    Is it possible for somebody to share .net code? Or show a libraries which can be used for this task?

  • Verified answer
    Andrey Baludin Profile Picture
    Andrey Baludin 3,943 on at

    I found System.Security.Cryptography.Xml

    Thanks for inspiring me!

  • Suggested answer
    Stefano Demiliani Profile Picture
    Stefano Demiliani 37,172 Most Valuable Professional on at

    Yes if you want I can share it. I've only to return at my office for doing that :)

  • Andrey Baludin Profile Picture
    Andrey Baludin 3,943 on at

    It'll be great!

  • Andrey Baludin Profile Picture
    Andrey Baludin 3,943 on at

    Stefano Demiliani have you had a chance to look for code? I'll be very appreciate.

  • Andrey Baludin Profile Picture
    Andrey Baludin 3,943 on at

    So now i have next code:

    CSPParams := CSPParams.CspParameters;

// Here is main issue ->
//CSPParams.KeyContainerName = 'DevRootCA';
//<-

RSA := RSA.RSACryptoServiceProvider(CSPParams);

XmlDocument := XmlDocument.XmlDocument;
XmlDocument.PreserveWhitespace(FALSE);
XmlDocument.Load(XmlTextReader.XmlTextReader('C:\Temp\Data.xml'));

SignedXml := SignedXml.SignedXml(XmlDocument);
SignedXml.SigningKey(RSA);

Reference := Reference.Reference;
Reference.Uri := '';

Env := Env.XmlDsigEnvelopedSignatureTransform;
Reference.AddTransform(Env);

SignedXml.AddReference(Reference);

SignedXml.ComputeSignature;
XmlDigSignature := SignedXml.GetXml;
MESSAGE(XmlDigSignature.InnerXml);


    I Have dotnet variable CSPParams which I took from mscorlib:

    System.Security.Cryptography.CspParameters.'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'

    And the problem is that it doesn't have .KeyContainerName field. So I can't set it and get the key. As I understood - I just need to set SSL certificate name there? Has anyone encountered a similar problem?

    I'm moving through next instruction:

    docs.microsoft.com/.../how-to-sign-xml-documents-with-digital-signatures

  • Verified answer
    Andrey Baludin Profile Picture
    Andrey Baludin 3,943 on at

    And the answer is:

    CSPParams := CSPParams.CspParameters(1, 'Microsoft Base Cryptographic Provider v1.0', 'DevRootCA');

RSA := RSA.RSACryptoServiceProvider(CSPParams);

XmlDocument := XmlDocument.XmlDocument;
XmlDocument.PreserveWhitespace(FALSE);
XmlDocument.Load(XmlTextReader.XmlTextReader('C:\Temp\Data.xml'));

SignedXml := SignedXml.SignedXml(XmlDocument);
SignedXml.SigningKey := RSA;

Reference := Reference.Reference;
Reference.Uri := '';

Env := Env.XmlDsigEnvelopedSignatureTransform;
Reference.AddTransform(Env);

SignedXml.AddReference(Reference);

SignedXml.ComputeSignature;
XmlDigSignature := SignedXml.GetXml;
MESSAGE(XmlDigSignature.InnerXml);


  • Suggested answer
    Stefano Demiliani Profile Picture
    Stefano Demiliani 37,172 Most Valuable Professional on at

    Hi Andrey, I've checked and my addin performs criptography with signed certificate (with RSACryptoServiceProvider).

    I think this is not exactly what you was searching. Nice to see that you've solved your problem.

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