Unicode C

Generate a CSR with SAN (Subject Alternative Name) Extension

See more CSR Examples

Demonstrates how to generate a private key and a Certificate Signing Request (CSR) that includes the SAN extension. 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.
    //  (It is also possible to create CSRs based on ECDSA private keys..)
    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();

    //  Specify the Common Name. 
    CkCsrW_putCommonName(csr,L"mysubdomain.mydomain.com");

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

    //  State or Province Name (full name)
    CkCsrW_putState(csr,L"Yorks");

    //  Locality Name (eg, city)
    CkCsrW_putLocality(csr,L"York");

    //  Organization Name (eg, company)
    CkCsrW_putCompany(csr,L"Internet Widgits Pty Ltd");

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

    //  Email address
    CkCsrW_putEmailAddress(csr,L"support@mydomain.com");

    //  Add Subject Alternative Names
    //  (The AddSan method is added in Chilkat v9.5.0.84)
    //  Call AddSan for each alternative name.
    success = CkCsrW_AddSan(csr,L"dnsName",L"mydomain.com");
    success = CkCsrW_AddSan(csr,L"dnsName",L"mysubdomain.mydomain.com");
    success = CkCsrW_AddSan(csr,L"ipAddress",L"192.168.0.123");

    //  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:

    //  	-----BEGIN CERTIFICATE REQUEST-----
    //  	MIIC6jCCAdICAQAwgaQxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
    //  	bTELMAkGA1UEBhMCR0IxDjAMBgNVBAgMBVlvcmtzMQ0wCwYDVQQHDARZb3JrMSEw
    //  	HwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQxCzAJBgNVBAsMAklUMSMw
    //  	IQYJKoZIhvcNAQkBFhRzdXBwb3J0QG15ZG9tYWluLmNvbTCCASIwDQYJKoZIhvcN
    //  	AQEBBQADggEPADCCAQoCggEBALnQ0un/wF8whk+gPuiAlf3qvx14jgAOV6Erm6EB
    //  	H7WACPCpnKcm/8KP+7uoPiwRQaENhMeCgf45vcivl2p6aAn/spLXyEkXyw2d8wFb
    //  	YYAGRkiz4Xf7ASJiKuwcOtORz+sSDzgtdfokHfXU1cYeFE2yQhSdLUY5fMn425+g
    //  	KoEEsRSjSDe6AKru4+4iGNrLKd8pB9IA5/jOE139IkWlB9r5fEPD5bUTsgqXk9eb
    //  	68O0gc712V2eZK07N24lDmFC4bIMTD4csDWocR5hFHXj7NX7c8sOBDcpEb9mPIk4
    //  	elxubnhkfnjhOi4J3lDHcT/0ALnbLhf9LnaiKqs+5VcVZvECAwEAAaAAMA0GCSqG
    //  	SIb3DQEBBQUAA4IBAQC0AETLIcP3foh5nbu2hVFS8uCUNZ5hEIR1eXmYZmZoBQq2
    //  	26ZAoT4CZwixlggC+n7WvAXJ5Pzxpl4wLV4loTiQzaKPX1w0ERo5ZRwLy0n56oG2
    //  	6QG+WTViT1C8rlgtVwkCFNOXr0kSSRs8FdaPllqKxK1hxYSL7zwNpumsk39F2cDt
    //  	vhcekvH0V3BuGrQFm3dKN/0azW6GOod9+Vq4VzSyOe3kp15oxLBsZOFOu/REujcw
    //  	Tzu2jt1asQKUm60CZ9wNHpYepR0Ww40uP1slbehEaFDa6V8b60/tlHHmBbJ4/fy5
    //  	hJnYCvjzFz4O9VtT+JtP9ldRHWV3KpZ8ne3AjD+F
    //  	-----END CERTIFICATE REQUEST-----


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

    }