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(Swift 2) PKCS11 Certificate Chain

See more PKCS11 Examples

Demonstrates how to make CA certs available for the certificate chain to be included when creating a signature (using a PKCS11 compatible smart card / USB token) such as for PDF, XMLDSig, etc.

Note: This example requires Chilkat v9.5.0.88 or later.

Chilkat Downloads for the Swift Programming Language

MAC OS X (Cocoa) Objective-C/Swift Libs

iOS Objective-C/Swift Libs

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

    // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

    let pkcs11 = CkoPkcs11()

    // You will use the DLL (or shared lib) provided by your smart card vendor, or a DLL compatible with your smart card.
    // On Windows, if the DLL is located in C:\Windows\System32, specify only the filename.
    // Otherwise provide the full path.
    pkcs11.SharedLibPath = "bit4xpki.dll"

    var success: Bool = pkcs11.Initialize()
    if success == false {
        print("\(pkcs11.LastErrorText)")
        return
    }

    // Pass -1 for the slotID to open a session on the first non-empty slot.
    var slotID: Int = -1

    // Open a session.
    var readWrite: Bool = true
    success = pkcs11.OpenSession(slotID, readWrite: readWrite)
    if success == false {
        print("\(pkcs11.LastErrorText)")
        return
    }

    // Make it an authenticated session by calling Login.
    var userType: Int = 1
    // Make sure to use the correct PIN for your smart card..
    var pin: String? = "0000"
    success = pkcs11.Login(userType, pin: pin)
    if success == false {
        print("\(pkcs11.LastErrorText)")
        success = pkcs11.CloseSession()
        return
    }

    // Get the certificate (on the smart card) that has a private key.
    let cert = CkoCert()
    success = pkcs11.FindCert("privateKey", partValue: "", cert: cert)
    if success == true {
        print("Cert with private key: \(cert.SubjectCN)")
    }
    else {
        print("No certificates having a private key were found.")
        success = pkcs11.CloseSession()
        return
    }

    // If the certificates in the chain of authentication were contained on the smart card,
    // then Chilkat would already have them (via the FindCert function) and the certs in the chain will be automatically used
    // as needed when signing occurs.

    // If you have CA certs located elsewhere, such as in .cer files, you can make them available to Chilkat in the following way:

    let certVault = CkoXmlCertVault()
    // Please review the methods available in the XML certificate vault class.  Different methods exist for adding certificates
    // from various sources, such as PEM, PFX, or in-memory sources..
    success = certVault.AddCertFile("someDir/caIntermediateCert.cer")
    // ...
    success = certVault.AddCertFile("someDir/caCert.cer")
    // (Your code should check the return value to make sure it succeeded.)

    success = cert.UseCertVault(certVault)
    if success == false {
        print("\(cert.LastErrorText)")
        success = pkcs11.CloseSession()
        return
    }

    // --------------------------------------------------------------------------
    // At this point, we have the cert (and certs in the chain of authentication) to be used for signing.
    // The code for using the certificate in creating the digital signature, such as for a PDF, XML, etc., go here...

    // --------------------------------------------------------------------------

    // Revert to an unauthenticated session by calling Logout.
    success = pkcs11.Logout()
    if success == false {
        print("\(pkcs11.LastErrorText)")
        success = pkcs11.CloseSession()
        return
    }

    // When finished, close the session.
    // It is important to close the session (memory leaks will occur if the session is not properly closed).
    success = pkcs11.CloseSession()
    if success == false {
        print("\(pkcs11.LastErrorText)")
        return
    }

    print("Success.")

}

 

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