(Swift 3,4,5...) Create CAdES (p7m) Signature using ARSS (Aruba Remote Signing Service)

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Demonstrates creating a CAdES (p7m) signature using the Aruba Remote Signing Service.

Note: This example requires Chilkat v9.5.0.96 or later.

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

    // Load the certificate used for signing.  The certificate's private key is stored on 
    // the Aruba.it server and the signing will happen remotely using the
    // ARSS (Aruba Remote Signing Service).
    // However, we still need the certificate locally (without private key).
    let cert = CkoCert()!
    var success: Bool = cert.load(fromFile: "qa_data/certs/myCert.cer")
    if success == false {
        print("\(cert.lastErrorText!)")
        return
    }

    // To sign using the Aruba Remote Signing Service, 
    // add the following lines of code to specify your authentication credentials,
    // and the ID of the certificate w/ private key on the server to be used.
    let jsonArss = CkoJsonObject()!

    // Set the "service" equal to "ARSS" to tell Chilkat to use ARSS for signing.
    jsonArss.update("service", value: "ARSS")
    // Specify the certificate ID, such as "AS0"
    // This certificate should match the certificate loaded in the above code.
    jsonArss.update("certID", value: "YOUR_ARSS_CERT_ID")
    jsonArss.update("otpPwd", value: "YOUR_OTP_PWD")
    jsonArss.update("typeOtpAuth", value: "demoprod")
    jsonArss.update("user", value: "YOUR_ARSS_USERNAME")
    jsonArss.update("userPWD", value: "YOUR_ARSS_PASSWORD")
    success = cert.setCloudSigner(jsonArss)

    let crypt = CkoCrypt2()!

    success = crypt.setSigning(cert)
    if success == false {
        print("\(crypt.lastErrorText!)")
        return
    }

    // The CadesEnabled property applies to all methods that create PKCS7 signatures. 
    // To create a CAdES-BES signature, set this property equal to true.
    crypt.cadesEnabled = true

    crypt.hashAlgorithm = "sha256"

    let signedAttrs = CkoJsonObject()!
    signedAttrs.updateInt("contentType", value: 1)
    signedAttrs.updateInt("signingTime", value: 1)
    signedAttrs.updateInt("messageDigest", value: 1)
    signedAttrs.updateInt("signingCertificateV2", value: 1)
    crypt.signingAttributes = signedAttrs.emit()

    // You can sign any type of file..
    var inputXmlPath: String? = "qa_data/e-Invoice.xml"
    var outputP7mPath: String? = "qa_output/signed.p7m"

    // Create the CAdES-BES attached signature, which contains the original data.
    // Chilkat will build the .p7m locally, but will (internally) use ARSS
    // to do the RSA signing remotely.
    success = crypt.createP7M(inputXmlPath, p7mPath: outputP7mPath)
    if success == false {
        print("\(crypt.lastErrorText!)")
        return
    }

    print("Success.")

}