B4X

CSR Get Extension Request

See more CSR Examples

If a CSR contains a 1.2.840.113549.1.9.14 extensionRequest, then this method will return the extension request in XML format.

Note: This example requires Chilkat v9.5.0.91 or greater.

B4X

Dim success As Boolean = False

'  This requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

Dim csr As ChilkatCsr
csr.Initialize

'  Load a CSR PEM file.  The file should contain content that looks like this:
'  
'  	-----BEGIN CERTIFICATE REQUEST-----
'  	MII...
'  	....
'  	....
'  	....
'  	-----END CERTIFICATE REQUEST-----

Dim fac As ChilkatFileAccess
fac.Initialize
Dim csrPem As String = fac.ReadEntireTextFile("qa_data/csr/sample.pem", "utf-8")

success = csr.LoadCsrPem(csrPem)
If success <> True Then
    Log(csr.LastErrorText)
    Return
End If


Dim xml As ChilkatXml
xml.Initialize

success = csr.GetExtensionRequest(xml)
If success <> True Then
    Log("CSR has no extensionRequest.")
    Return
End If


Dim xmlStr As String = xml.GetXml
Log(xmlStr)

'  Sample output:

'  <?xml version="1.0" encoding="utf-8"?>
'  <set>
'      <sequence>
'          <sequence>
'              <oid>1.3.6.1.4.1.311.20.2</oid>
'              <asnOctets>
'                  <printable>ZATCA-Code-Signing</printable>
'              </asnOctets>
'          </sequence>
'          <sequence>
'              <oid>2.5.29.17</oid>
'              <asnOctets>
'                  <sequence>
'                      <contextSpecific tag="4" constructed="1">
'                          <sequence>
'                              <set>
'                                  <sequence>
'                                      <oid>2.5.4.4</oid>
'                                      <utf8>334623324234325</utf8>
'                                  </sequence>
'                              </set>
'                              <set>
'                                  <sequence>
'                                      <oid>0.9.2342.19200300.100.1.1</oid>
'                                      <utf8>310122393500003</utf8>
'                                  </sequence>
'                              </set>
'                              <set>
'                                  <sequence>
'                                      <oid>2.5.4.12</oid>
'                                      <utf8>0000</utf8>
'                                  </sequence>
'                              </set>
'                              <set>
'                                  <sequence>
'                                      <oid>2.5.4.26</oid>
'                                      <utf8>Sample E</utf8>
'                                  </sequence>
'                              </set>
'                              <set>
'                                  <sequence>
'                                      <oid>2.5.4.15</oid>
'                                      <utf8>Sample Business</utf8>
'                                  </sequence>
'                              </set>
'                          </sequence>
'                      </contextSpecific>
'                  </sequence>
'              </asnOctets>
'          </sequence>
'      </sequence>
'  </set>

'  Use this online tool to generate parsing code from sample XML: 
'  Generate Parsing Code from XML