Unicode C

Generate CSR with Uncommon Fields

See more CSR Examples

Demonstrates how to generate a new RSA key and a Certificate Signing Request (CSR) for this:

csr.common.name=Admin forInformation-MainShop
csr.serial.number=1-XYZ|2-2.0|3-999695
csr.organization.identifier=990099994100099
csr.organization.unit.name=9999910000
csr.organization.name=9999910000
csr.country.name=SA
csr.invoice.type=1100
csr.location.address=King Fahed Road
csr.industry.business.category=MainOffice

Unicode C

#include <C_CkRsaW.h>
#include <C_CkPrivateKeyW.h>
#include <C_CkCsrW.h>
#include <C_CkFileAccessW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkRsaW rsa;
    HCkPrivateKeyW privKey;
    HCkCsrW csr;
    const wchar_t *pemStr;
    HCkFileAccessW fac;

    success = FALSE;

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

    // First generate an RSA private key.
    rsa = CkRsaW_Create();

    // Generate a random 2048-bit RSA key.
    privKey = CkPrivateKeyW_Create();
    success = CkRsaW_GenKey(rsa,2048,privKey);
    if (success == FALSE) {
        wprintf(L"%s\n",CkRsaW_lastErrorText(rsa));
        CkRsaW_Dispose(rsa);
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    // Create the CSR object and set properties.
    csr = CkCsrW_Create();

    CkCsrW_putCommonName(csr,L"Admin forInformation-MainShop");

    // Country Name (2 letter code)
    CkCsrW_putCountry(csr,L"SA");

    // Organization Name (eg, company)
    CkCsrW_putCompany(csr,L"9999910000");

    // Organizational Unit Name (eg, secion/division)
    CkCsrW_putCompanyDivision(csr,L"9999910000");

    // See https://www.alvestrand.no/objectid/2.5.4.html for OIDs for the following fields:

    // csr.serial.number=1-XYZ|2-2.0|3-999695
    // 2.5.4.5 - id-at-serialNumber 
    CkCsrW_SetSubjectField(csr,L"2.5.4.5",L"1-XYZ|2-2.0|3-999695",L"UTF8String");

    // csr.organization.identifier=990099994100099
    // 2.5.4.45 - id-at-uniqueIdentifier   Don't know if this is correct.
    CkCsrW_SetSubjectField(csr,L"2.5.4.45",L"1100",L"UTF8String");

    // csr.invoice.type=1100
    // Don't know what this OID would be...
    CkCsrW_SetSubjectField(csr,L"2.5.4.99",L"1100",L"UTF8String");

    // csr.location.address=King Fahed Road
    // 2.5.4.9 - id-at-streetAddress 
    CkCsrW_SetSubjectField(csr,L"2.5.4.9",L"King Fahed Road",L"UTF8String");

    // csr.industry.business.category=MainOffice
    // 2.5.4.15 - id-at-businessCategory 
    CkCsrW_SetSubjectField(csr,L"2.5.4.15",L"MainOffice",L"UTF8String");

    // Create the CSR using the private key.
    pemStr = CkCsrW_genCsrPem(csr,privKey);
    if (CkCsrW_getLastMethodSuccess(csr) != TRUE) {
        wprintf(L"%s\n",CkCsrW_lastErrorText(csr));
        CkRsaW_Dispose(rsa);
        CkPrivateKeyW_Dispose(privKey);
        CkCsrW_Dispose(csr);
        return;
    }

    // Save the private key and CSR to a files.
    CkPrivateKeyW_SavePkcs8EncryptedPemFile(privKey,L"password",L"qa_output/privKey1.pem");

    fac = CkFileAccessW_Create();
    CkFileAccessW_WriteEntireTextFile(fac,L"qa_output/csr1.pem",pemStr,L"utf-8",FALSE);

    // Show the CSR.
    wprintf(L"%s\n",pemStr);

    // Sample output:
    // The CSR PEM can be checked here:
    // https://www.networking4all.com/en/support/tools/csr+check/
    // Copy-and-paste the PEM into the online CSR Decoding / CSR Verification form

    // 	-----BEGIN CERTIFICATE REQUEST-----
    // 	MIIC6jCCAdICAQAwgaQxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
    // ...
    // ...
    // 	hJnYCvjzFz4O9VtT+JtP9ldRHWV3KpZ8ne3AjD+F
    // 	-----END CERTIFICATE REQUEST-----


    CkRsaW_Dispose(rsa);
    CkPrivateKeyW_Dispose(privKey);
    CkCsrW_Dispose(csr);
    CkFileAccessW_Dispose(fac);

    }