Swift

Set a TLS Client Certificate for IMAP

Demonstrates the Chilkat Imap.SetSslClientCert method, which supplies a client certificate for TLS client-certificate authentication. The only argument is a Cert object that must provide access to its private key. Call it before connecting. This example loads the certificate from a PFX file.

Note: The certificate path is relative to the application's current working directory. Supply the path to your own certificate file.

Background: Most IMAP servers authenticate with a username and password only. A few high-security deployments additionally require mutual TLS, where the client presents its own certificate during the handshake. Because that happens as part of connecting, the certificate must be set before Connect — setting it afterward has no effect on the already-established connection.

Chilkat Swift Downloads

Download Chilkat for Swift

Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the Imap.SetSslClientCert method, which supplies a client certificate for TLS
    //  client-certificate authentication.  The only argument is a Cert object.  It must be called
    //  before connecting.

    let imap = CkoImap()!

    imap.ssl = true
    imap.port = 993

    //  The PFX password is not hard-coded in source.  Insert code here to obtain it from an
    //  interactive prompt, environment variable, or a secrets vault.
    var pfxPassword: String?

    //  Load the client certificate (and its private key) from a PFX file.
    let cert = CkoCert()!
    success = cert.loadPfxFile(path: "qa_data/client.pfx", password: pfxPassword)
    if success == false {
        print("\(cert.lastErrorText!)")
        return
    }

    //  Provide the client certificate BEFORE connecting.
    success = imap.setSslClientCert(cert: cert)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    success = imap.connect(hostname: "imap.example.com")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    success = imap.login(login: "user@example.com", password: "myPassword")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    success = imap.disconnect()
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }


}