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(VB.NET UWP/WinRT) Subject Alternative Name

Demonstrates the usage of the SubjectAlternativeName property to get the certificate SAN (subject alternative name) as XML.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

' Note: Not all certificates contain a Subject Alternative Name.
' If it does not, the SubjectAlternativeName property will contain the empty string.

Dim cert As New Chilkat.Cert

Dim success As Boolean = cert.LoadFromFile("qa_data/certs/testIcpBrasil.cer")
If (success = False) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If


Dim subjectAltNameXml As String = cert.SubjectAlternativeName

Debug.WriteLine(subjectAltNameXml)

' Here's a sample of the subjectAltNameXml:

' <?xml version="1.0" encoding="utf-8"?>
' <SubjectAltName>
'     <name type="oid" oid="2.16.76.1.3.4">...</name>
'     <name type="oid" oid="2.16.76.1.3.2">...</name>
'     <name type="oid" oid="2.16.76.1.3.3">...</name>
'     <name type="oid" oid="2.16.76.1.3.7">...</name>
'     <rfc822Name>...</rfc822Name>
' </SubjectAltName>


' The XML can be parsed like this:

Dim xml As New Chilkat.Xml

xml.LoadXml(subjectAltNameXml)

Dim oid As String
Dim name As String

Dim i As Integer = 0
Dim count_i As Integer = xml.NumChildrenHavingTag("name")
While i < count_i
    xml.I = i
    oid = xml.ChilkatPath("name[i]|(oid)")
    name = xml.GetChildContent("name[i]")
    i = i + 1
End While
Dim rfc822Name As String = xml.GetChildContent("rfc822Name")

 

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