(Swift 2) Create CAdES-BES .p7m using Smart Card or USB Token

Demonstrates how to create a CAdES BES invoice.xml.p7m using a certificate stored on a smart card or USB token.

Note: This example requires Chilkat v9.5.0.77 and at the time of this writing is restricted to the Windows operating system.

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func chilkatTest() {
    // Note: Requires Chilkat v9.5.0.77 or greater.

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

    let crypt = CkoCrypt2()

    // Use a certificate on a smartcard or USB token.
    let cert = CkoCert()
    // Load the certificate on the smartcard currently in the reader (or on the USB token).
    // Pass an empty string to allow Chilkat to automatically choose the CSP (Cryptographi Service Provider).
    // See Load Certificate on Smartcard for information about explicitly selecting a particular CSP.
    var success: Bool = cert.LoadFromSmartcard("")
    if success != true {
        print("\(cert.LastErrorText)")
        return
    }

    // Provide the smartcard PIN.
    // If the PIN is not explicitly provided here, the Windows OS should
    // display a dialog for the PIN.
    cert.SmartCardPin = "000000"

    // Provide the certificate for signing.
    success = crypt.SetSigningCert(cert)
    if success != true {
        print("\(crypt.LastErrorText)")
        return
    }

    // Indicate that SHA-256 should be used.
    crypt.HashAlgorithm = "sha256"

    // Specify the signed attributes to be included.
    // (This is what makes it CAdES-BES compliant.)
    let jsonSignedAttrs = CkoJsonObject()
    jsonSignedAttrs.UpdateInt("contentType", value: 1)
    jsonSignedAttrs.UpdateInt("signingTime", value: 1)
    jsonSignedAttrs.UpdateInt("messageDigest", value: 1)
    jsonSignedAttrs.UpdateInt("signingCertificateV2", value: 1)
    crypt.SigningAttributes = jsonSignedAttrs.Emit()

    var inFile: String? = "qa_data/xml/IT01234567890_11002.xml"
    var sigFile: String? = "qa_output/IT01234567890_11002.xml.p7m"

    // Create the CAdES-BES signature, which contains the original data.
    success = crypt.CreateP7M(inFile, p7mPath: sigFile)
    if success == false {
        print("\(crypt.LastErrorText)")
        return
    }

    print("Success.")

}