(DataFlex) SII XML Digital Signature

Example for SII XML Digital Signature.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoXmlToSign
    Handle hoGen
    Variant vXml1
    Handle hoXml1
    Variant vCert
    Handle hoCert
    Variant vSbXml
    Handle hoSbXml
    Handle hoVerifier
    Integer iNumSigs
    Integer iVerifyIdx
    Boolean iVerified
    String sTemp1

    Move True To iSuccess

    // Load the XML to be signed.
    Get Create (RefClass(cComChilkatXml)) To hoXmlToSign
    If (Not(IsComObjectCreated(hoXmlToSign))) Begin
        Send CreateComObject of hoXmlToSign
    End
    Get ComLoadXmlFile Of hoXmlToSign "c:/aaworkarea/eduardo/sii_unsigned.xml" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoXmlToSign To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // The sample XML to be signed looks like this:

    // <?xml version="1.0" encoding="ISO-8859-1"?>
    // <EnvioDTE xmlns="http://www.sii.cl/SiiDte" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sii.cl/SiiDte EnvioDTE_v10.xsd" version="1.0">
    // <SetDTE ID="SetDocF0T33_20240425_170512">
    //  <Caratula version="1.0">
    //   <RutEmisor>99999999-4</RutEmisor>
    //   <RutEnvia>12345678-6</RutEnvia>
    //   <RutReceptor>888888000-K</RutReceptor>
    //   <FchResol>2014-08-22</FchResol>
    //   <NroResol>80</NroResol>
    //   <TmstFirmaEnv>2024-04-25T17:05:13</TmstFirmaEnv>
    //   <SubTotDTE>
    //    <TpoDTE>33</TpoDTE>
    //    <NroDTE>1</NroDTE>
    //   </SubTotDTE>
    //  </Caratula>
    // <DTE version="1.0">
    // <Documento ID="F555T55">
    // ...
    // </Documento>
    // </EnvioDTE>

    Get Create (RefClass(cComChilkatXmlDSigGen)) To hoGen
    If (Not(IsComObjectCreated(hoGen))) Begin
        Send CreateComObject of hoGen
    End

    Set ComSigLocation Of hoGen To "EnvioDTE|SetDTE|DTE"
    Set ComSigLocationMod Of hoGen To 0
    Set ComSigNamespacePrefix Of hoGen To ""
    Set ComSigNamespaceUri Of hoGen To "http://www.w3.org/2000/09/xmldsig#"
    Set ComSignedInfoCanonAlg Of hoGen To "C14N"
    Set ComSignedInfoDigestMethod Of hoGen To "sha1"

    // -------- Reference 1 --------
    Get Create (RefClass(cComChilkatXml)) To hoXml1
    If (Not(IsComObjectCreated(hoXml1))) Begin
        Send CreateComObject of hoXml1
    End
    Set ComTag Of hoXml1 To "Transforms"
    Get ComUpdateAttrAt Of hoXml1 "Transform" True "Algorithm" "http://www.w3.org/TR/2001/REC-xml-c14n-20010315" To iSuccess

    Get pvComObject of hoXml1 to vXml1
    Get ComAddSameDocRef2 Of hoGen "F511T33" "sha1" vXml1 "" To iSuccess

    // Provide a certificate + private key. (PFX password is test123)
    Get Create (RefClass(cComChilkatCert)) To hoCert
    If (Not(IsComObjectCreated(hoCert))) Begin
        Send CreateComObject of hoCert
    End
    Get ComLoadPfxFile Of hoCert "qa_data/pfx/cert_test123.pfx" "test123" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoCert To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get pvComObject of hoCert to vCert
    Get ComSetX509Cert Of hoGen vCert True To iSuccess

    Set ComKeyInfoType Of hoGen To "X509Data+KeyValue"
    Set ComX509Type Of hoGen To "Certificate"

    // Load XML to be signed...
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbXml
    If (Not(IsComObjectCreated(hoSbXml))) Begin
        Send CreateComObject of hoSbXml
    End
    Get pvComObject of hoSbXml to vSbXml
    Get ComGetXmlSb Of hoXmlToSign vSbXml To iSuccess

    Set ComBehaviors Of hoGen To "IndentedSignature"

    // Sign the XML...
    Get pvComObject of hoSbXml to vSbXml
    Get ComCreateXmlDSigSb Of hoGen vSbXml To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoGen To sTemp1
        Showln sTemp1
        Procedure_Return
    End

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

    // Save the signed XML to a file.
    Get ComWriteFile Of hoSbXml "c:/temp/qa_output/signedXml.xml" "utf-8" False To iSuccess

    Get ComGetAsString Of hoSbXml To sTemp1
    Showln sTemp1

    // ----------------------------------------
    // Verify the signatures we just produced...
    Get Create (RefClass(cComChilkatXmlDSig)) To hoVerifier
    If (Not(IsComObjectCreated(hoVerifier))) Begin
        Send CreateComObject of hoVerifier
    End
    Get pvComObject of hoSbXml to vSbXml
    Get ComLoadSignatureSb Of hoVerifier vSbXml To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoVerifier To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComNumSignatures Of hoVerifier To iNumSigs
    Move 0 To iVerifyIdx
    While (iVerifyIdx < iNumSigs)
        Set ComSelector Of hoVerifier To iVerifyIdx
        Get ComVerifySignature Of hoVerifier True To iVerified
        If (iVerified <> True) Begin
            Get ComLastErrorText Of hoVerifier To sTemp1
            Showln sTemp1
            Procedure_Return
        End

        Move (iVerifyIdx + 1) To iVerifyIdx
    Loop

    Showln "All signatures were successfully verified."


End_Procedure