Xojo Plugin

Subject Alternative Name for ICP Brasil Certs

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Demonstrates how to access the multiple names contained in the Subject Alternative Name of a certificate. This example is for an ICP Brasil certificate. Xojo Plugin

Dim success As Boolean
success = False

Dim cert As New Chilkat.Cert

success = cert.LoadFromFile("qa_data/certs/testIcpBrasil.cer")
If (success = False) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

// If the cert's Subject Alternative Name contains multiple values, each specified by an OID,
// then the Rfc822Name property returns XML.
Dim subjectAltNameXml As String
subjectAltNameXml = cert.Rfc822Name

System.DebugLog(subjectAltNameXml)

// Here's a sample of the subjectAltNameXml:

// <SubjectAltName>
//     <name type="oid" oid="2.16.76.1.3.4">290999653223955019700000000000000000000150424SRJUXPTS</name>
//     <name type="oid" oid="2.16.76.1.3.2">JOAO SILVA</name>
//     <name type="oid" oid="2.16.76.1.3.3">02408939000115</name>
//     <name type="oid" oid="2.16.76.1.3.7">000000000000</name>
// </SubjectAltName>

// The XML can be parsed like this:

Dim xml As New Chilkat.Xml
success = xml.LoadXml(subjectAltNameXml)

Dim oid As String
Dim name As String

Dim i As Int32
i = 0
Dim count_i As Int32
count_i = xml.NumChildrenHavingTag("name")
While i < count_i
    xml.I = i
    oid = xml.ChilkatPath("name[i]|(oid)")
    name = xml.GetChildContent("name[i]")
    System.DebugLog(oid + ": " + name)
    i = i + 1
Wend