C#

Load a CSR and Get the SANs (Subject Alternative Names)

See more CSR Examples

Demonstrates how to load a Certificate Signing Request (CSR) and get the Subject Alternative Names (if any).

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

C#

bool success = false;

//  Note: Requires Chilkat v9.5.0.91 or greater.

//  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-----
//  MIIDnzCCAocCAQAwgZ4xFDASBgNVBAMMC2V4YW1wbGUuY29tMRQwEgYDVQQHDAtM
//  b3MgQW5nZWxlczETMBEGA1UECAwKQ2FsaWZvcm5pYTEUMBIGA1UECgwLRXhhbXBs
//  ZSBJbmMxFDASBgNVBAsMC1NTTCBTdXBwb3J0MSIwIAYJKoZIhvcNAQkBFhNleGFt
//  cGxlQGV4YW1wbGUuY29tMQswCQYDVQQGEwJVUzCCASIwDQYJKoZIhvcNAQEBBQAD
//  ggEPADCCAQoCggEBALhIT/q7y1xwpYaR0Coplktwn7RGaJpEBCgbJWxOVPTGL540
//  erlhc6MrSEr6fo/HNtAbn6MNWm5F0MwjEU7H1Jxc7DYav+ps3hyhGaK9jalE99Sm
//  yFOzKMLDPyWTPpxfT4QBO4rpWxMT2lgixDkZlaNqmC6pUGXArfH+H1F3C0gtH4ZU
//  XN/Ipyk6r6ozWnJvIefdMe1JmeMD3RSoVcXd9bNWSpiD4uJnV+2pewkkNzhcGzBH
//  MGi4ZjIbpPiYLlri/79fPb6u7wYkYLzCWRKzq6EaJkqY6OQgE33SC1GQKjC/fFRx
//  wogub1s9cRjfL6vdqWbTJ5xhOkPeBO3UzHBHIksCAwEAAaCBujCBtwYJKoZIhvcN
//  AQkOMYGpMIGmMAkGA1UdEwQCMAAwCwYDVR0PBAQDAgWgMB0GA1UdJQQWMBQGCCsG
//  AQUFBwMBBggrBgEFBQcDAjBtBgNVHREEZjBkggtleGFtcGxlLmNvbYIPd3d3LmV4
//  YW1wbGUuY29tgg9mdHAuZXhhbXBsZS5jb22CD3N2bi5leGFtcGxlLmNvbYIQc210
//  cC5leGFtcGxlLmNvbYIQaW1hcC5leGFtcGxlLmNvbTANBgkqhkiG9w0BAQsFAAOC
//  AQEAsIEDMlZViEVtuQWpfa6vUl5RfqQrop+hh9l4UmEOnERLEzyVO+9Kn7jNxyOR
//  Gg7O9H4BYTfet6YwfpawbnQ1HBexduRZaUnET8RiYgKch0vWr/HbP7jvc23XUz2P
//  NOAiet/tyTU6U5xJn0H4q1VFIbHjntpBSL+n+aiv8glIUepG8BwTu+vBe2/kVzKG
//  ro2tudhbpEJYOwurlHCoubhCah9ryIkDeYEnycsrB6VnaxeGK0/5S2JBQo22/F9s
//  T+q0Gee936ISvypLwNoIX+YFAjw2KnqucUM3RKHAAheJin5WNIQXdHHKGsImapun
//  VqmPwLN6Kgm+kFVS0H5eyULSnA==
//  -----END CERTIFICATE REQUEST-----

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

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

//  Get the SANs
Chilkat.StringTable st = new Chilkat.StringTable();

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

int i = 0;
int numSans = st.Count;
while (i < numSans) {
    Debug.WriteLine(st.StringAt(i));
    i = i + 1;
}