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(PowerBuilder) Get Certificate CRL Distribution Points

Demonstrates how to get a certificate's CRL Distribution Points extension data (assuming it exists). In the vast majority of cases, there will be one CRL Distribution Point.

Note: This example requires Chilkat v9.5.0.76 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Cert
integer li_Success
string ls_ExtensionXmlStr
oleobject loo_Xml
oleobject loo_SbDistPoint

loo_Cert = create oleobject
li_rc = loo_Cert.ConnectToNewObject("Chilkat_9_5_0.Cert")
if li_rc < 0 then
    destroy loo_Cert
    MessageBox("Error","Connecting to COM object failed")
    return
end if

li_Success = loo_Cert.LoadFromFile("qa_data/certs/test_haswdt.cer")
if li_Success <> 1 then
    Write-Debug loo_Cert.LastErrorText
    destroy loo_Cert
    return
end if

//  Get the CRL Distribution Points extension, which is at OID 2.5.29.31
ls_ExtensionXmlStr = loo_Cert.GetExtensionAsXml("2.5.29.31")
if loo_Cert.LastMethodSuccess = 0 then
    Write-Debug "Certificate does not have the CDP extension."
    destroy loo_Cert
    return
end if

loo_Xml = create oleobject
li_rc = loo_Xml.ConnectToNewObject("Chilkat_9_5_0.Xml")

loo_Xml.LoadXml(ls_ExtensionXmlStr)

//  See what we have..
Write-Debug loo_Xml.GetXml()

//  We should get XML like this:

//  <?xml version="1.0" encoding="utf-8" ?>
//  <sequence>
//      <sequence>
//          <contextSpecific tag="0" constructed="1">
//              <contextSpecific tag="0" constructed="1">
//                  <contextSpecific tag="6" constructed="0">aHR0cDovL2NybC5jb21vZG9jYS5jb20vQ09NT0RPUlNBQ2xpZW50QXV0aGVudGljYXRpb25hbmRTZWN1
//  cmVFbWFpbENBLmNybA==</contextSpecific>
//              </contextSpecific>
//          </contextSpecific>
//      </sequence>
//  </sequence>
// 

//  Assuming there is one CRL Distribution Point...
loo_SbDistPoint = create oleobject
li_rc = loo_SbDistPoint.ConnectToNewObject("Chilkat_9_5_0.StringBuilder")

li_Success = loo_Xml.GetChildContentSb("sequence|contextSpecific|contextSpecific|contextSpecific",loo_SbDistPoint)
if li_Success = 1 then
    loo_SbDistPoint.Decode("base64","utf-8")
    Write-Debug "CRL Distribution Point:  " + loo_SbDistPoint.GetAsString()
end if

//  Sample output:
//  CRL Distribution Point:  http://crl.comodoca.com/COMODORSAClientAuthenticationandSecureEmailCA.crl


destroy loo_Cert
destroy loo_Xml
destroy loo_SbDistPoint

 

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