.NET Core C#

Use HTTPS Client Certificate from .cer and .key Files

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Demonstrates how to load a cert + private key from .cer and .key (base64) files and use it for mutual TLS authentication (client-side certificate). .NET Core C#

bool success = false;

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

Chilkat.Http http = new Chilkat.Http();

Chilkat.Cert cert = new Chilkat.Cert();
Chilkat.PrivateKey privKey = new Chilkat.PrivateKey();

// Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
success = cert.LoadFromFile("qa_data/certs/sample_cert_a.cer");
if (success != true) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// Load the private key.
Chilkat.BinData bd = new Chilkat.BinData();
success = bd.LoadFile("qa_data/certs/sample_key_a.key");
success = privKey.LoadAnyFormat(bd,"privateKeyPasswordIfNecessary");
if (success != true) {
    Debug.WriteLine(privKey.LastErrorText);
    return;
}

// Associate the private key with the cert.
success = cert.SetPrivateKey(privKey);
if (success != true) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// Set the certificate to be used for mutual TLS authentication
// (i.e. sets the client-side certificate for two-way TLS authentication)
success = http.SetSslClientCert(cert);
if (success != true) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

// At this point, the HTTP object instance is setup with the client-side cert, and any SSL/TLS
// connection will automatically use it if the server demands a client-side cert.