C#

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.

C#

bool success = false;

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

Chilkat.Csr csr = new Chilkat.Csr();

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

Chilkat.FileAccess fac = new Chilkat.FileAccess();
string csrPem = fac.ReadEntireTextFile("qa_data/csr/sample.pem","utf-8");

success = csr.LoadCsrPem(csrPem);
if (success != true) {
    Debug.WriteLine(csr.LastErrorText);
    return;
}

Chilkat.Xml xml = new Chilkat.Xml();

success = csr.GetExtensionRequest(xml);
if (success != true) {
    Debug.WriteLine("CSR has no extensionRequest.");
    return;
}

string xmlStr = xml.GetXml();
Debug.WriteLine(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