(Swift 3,4,5...) Create CAdES Signature (.p7s) Compliant with ICP-Brazil Digital Signature Standard PA AD RB v2.2

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Demonstrates how to create a CMS signature w/ policy ID that is compliant with the ICP-Brazil Digital Signature Standard PA AD RB v2.2

For more information, see https://validar.iti.gov.br/

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

    // ------------------------------------------------------------------------------------------------------
    // Note: This example creates a CMS signature (.p7s) that contains the PDF.
    // It is different than signing a PDF.  To sign a PDF where the resulting PDF contains the CMS signature,
    // see this example:  Sign PDF for ICP-Brasil
    // ------------------------------------------------------------------------------------------------------

    let crypt = CkoCrypt2()!

    let cert = CkoCert()!
    var success: Bool = cert.loadPfxFile("mySigningCert.pfx", password: "pfxPassword")
    if success != true {
        print("\(cert.lastErrorText!)")
        return
    }

    crypt.setSigning(cert)

    // Create JSON to indicate which signing attributes to include.
    let attrs = CkoJsonObject()!
    attrs.updateBool("contentType", value: true)
    attrs.updateBool("signingTime", value: true)
    attrs.updateBool("messageDigest", value: true)
    attrs.updateBool("signingCertificateV2", value: true)

    attrs.update("policyId.hashAlg", value: "SHA256")

    // Listed here are the currently existing profiles. (Chilkat will add additional ICP Brasil policy profiles in future versions as new ones are created.)
    // See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital for more information.
    // 
    // PA_AD_RA --> 2.16.76.1.7.1.5.1
    // PA_AD_RA_v1_1 --> 2.16.76.1.7.1.5.1.1
    // PA_AD_RA_v1_2 --> 2.16.76.1.7.1.5.1.2
    // PA_AD_RA_v2_0 --> 2.16.76.1.7.1.5.2
    // PA_AD_RA_v2_1 --> 2.16.76.1.7.1.5.2.1
    // PA_AD_RA_v2_2 --> 2.16.76.1.7.1.5.2.2
    // PA_AD_RA_v2_3 --> 2.16.76.1.7.1.5.2.3
    // PA_AD_RA_v2_4 --> 2.16.76.1.7.1.5.2.4
    // PA_AD_RB --> 2.16.76.1.7.1.1.1
    // PA_AD_RB_v1_1 --> 2.16.76.1.7.1.1.1.1
    // PA_AD_RB_v2_0 --> 2.16.76.1.7.1.1.2
    // PA_AD_RB_v2_1 --> 2.16.76.1.7.1.1.2.1
    // PA_AD_RB_v2_2 --> 2.16.76.1.7.1.1.2.2
    // PA_AD_RB_v2_3 --> 2.16.76.1.7.1.1.2.3
    // PA_AD_RC --> 2.16.76.1.7.1.4.1
    // PA_AD_RC_v1_1 --> 2.16.76.1.7.1.4.1.1
    // PA_AD_RC_v2_0 --> 2.16.76.1.7.1.4.2
    // PA_AD_RC_v2_1 --> 2.16.76.1.7.1.4.2.1
    // PA_AD_RC_v2_2 --> 2.16.76.1.7.1.4.2.2
    // PA_AD_RC_v2_3 --> 2.16.76.1.7.1.4.2.3
    // PA_AD_RT --> 2.16.76.1.7.1.2.1
    // PA_AD_RT_v1_1 --> 2.16.76.1.7.1.2.1.1
    // PA_AD_RT_v2_0 --> 2.16.76.1.7.1.2.2
    // PA_AD_RT_v2_1 --> 2.16.76.1.7.1.2.2.1
    // PA_AD_RT_v2_2 --> 2.16.76.1.7.1.2.2.2
    // PA_AD_RT_v2_3 --> 2.16.76.1.7.1.2.2.3
    // PA_AD_RV --> 2.16.76.1.7.1.3.1
    // PA_AD_RV_v1_1 --> 2.16.76.1.7.1.3.1.1
    // PA_AD_RV_v2_0 --> 2.16.76.1.7.1.3.2
    // PA_AD_RV_v2_1 --> 2.16.76.1.7.1.3.2.1
    // PA_AD_RV_v2_2 --> 2.16.76.1.7.1.3.2.2
    // PA_AD_RV_v2_3 --> 2.16.76.1.7.1.3.2.3

    // Set the policy OID and the profile name
    // Typically you should use the latest version.
    attrs.update("policyId.id", value: "2.16.76.1.7.1.1.2.3")
    attrs.update("policyId.profile", value: "PA_AD_RB_v2_3")

    // If you wish to use another, such as v2.2
    attrs.update("policyId.id", value: "2.16.76.1.7.1.1.2.2")
    attrs.update("policyId.profile", value: "PA_AD_RB_v2_2")

    crypt.signingAttributes = attrs.emit()

    // The input file can be any type of file.
    var inFile: String? = "toBeSigned.pdf"
    var outFile: String? = "signed.pdf.p7s"

    success = crypt.createP7M(inFile, p7mPath: outFile)
    if success == false {
        print("\(crypt.lastErrorText!)")
        return
    }

    print("Success.")

}