IOP: Create CSR from UA Expert fails for ECC certificates

[mregen]

Type of issue

• Bug
• Enhancement
• Compliance
• Question
• Help wanted

Current Behavior

see ECC branch

Opc.Ua.Core.dll!Opc.Ua.CertificateFactory.CreateSigningRequest(System.Security.Cryptography.X509Certificates.X509Certificate2 certificate, System.Collections.Generic.IList<string> domainNames) Line 312
   at D:\Source\Repos\UA-.NETStandard5\Stack\Opc.Ua.Core\Security\Certificates\CertificateFactory.cs(312)

System.ArgumentNullException
 HResult=0x80004003
 Message=Value cannot be null. (Parameter 'key')
 Source=System.Private.CoreLib
 StackTrace:
  at System.ArgumentNullException.Throw(String paramName)
  at System.ArgumentNullException.ThrowIfNull(Object argument, String paramName)
  at System.Security.Cryptography.X509Certificates.CertificateRequest..ctor(X500DistinguishedName subjectName, RSA key, HashAlgorithmName hashAlgorithm, RSASignaturePadding padding)
  at Opc.Ua.CertificateFactory.CreateSigningRequest(X509Certificate2 certificate, IList`1 domainNames) in D:\Source\Repos\UA-.NETStandard5\Stack\Opc.Ua.Core\Security\Certificates\CertificateFactory.cs:line 312

Expected Behavior

CSR is returned to UA Expert

Steps To Reproduce

Connect to ECC enabled ref server with sysadmin credentials, export CSR, null pointer exception

Environment

- OS: Windows
- Environment:
- Runtime:
- Nuget Version: 1.5.375 preview  --> ECC branch
- Component:
- Server:
- Client:

Anything else?

No response

[romanett]

reproducable with these input parameters:

CertificateFactory.CreateSigningRequest defaults to RSA, we need to check here for ECC Certs:

[romanett]

fixed with: 3306aa9

#2398