(Delphi DLL) Create EBICS Signature (XMLDSIG)

See more EBICS Examples

Demonstrates how to create an EBICS signature. (EBICS is the Electronic Banking Internet Communication Standard)

Note: This example requires Chilkat v11.0.0 or greater.

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Chilkat non-ActiveX DLL for Delphi

Chilkat ActiveX DLL for Delphi

* The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, StringBuilder, PublicKey, XmlDSigGen, Cert, XmlDSig;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
sbXml: HCkStringBuilder;
gen: HCkXmlDSigGen;
cert: HCkCert;
verifier: HCkXmlDSig;
pubKey: HCkPublicKey;

begin
success := False;

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

// This is the sample XML to be signed:

// <?xml version="1.0" encoding="UTF-8"?>
// <ebicsRequest
//   xmlns="urn:org:ebics:H005"
//   xmlns:ds="http://www.w3.org/2000/09/xmldsig#"
//   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
//   xsi:schemaLocation="urn:org:ebics:H005 ebics_request_H005.xsd"
//   Version="H005" Revision="1">
//   <header authenticate="true">
//     <static>
//       <HostID>EBIXHOST</HostID>
//       <Nonce>BDA2312973890654FAC9879A89794E65</Nonce>
//       <Timestamp>2005-01-30T15:30:45.123Z</Timestamp>
//       <PartnerID>CUSTM001</PartnerID>
//       <UserID>USR100</UserID>
//       <Product Language="en" InstituteID="Institute ID">Product Identifier</Product>
//       <OrderDetails>
//         <AdminOrderType>BTU</AdminOrderType>
//         <BTUOrderParams>
//           <Service>
//             <ServiceName>SCT</ServiceName>
//             <MsgName>pain.001</MsgName>
//           </Service>
//         </BTUOrderParams>
//       </OrderDetails>
//       <BankPubKeyDigests>
//         <Authentication Version="X002" Algorithm="http://www.w3.org/2001/04/xmlenc#sha256">1H/rQr2Axe9hYTV2n/tCp+3UIQQ=</Authentication>
//         <Encryption Version="E002" Algorithm="http://www.w3.org/2001/04/xmlenc#sha256">2lwiueWOIER823jSoiOkjl+woeI=</Encryption>
//       </BankPubKeyDigests>
//       <SecurityMedium>0000</SecurityMedium>
//       <NumSegments>2</NumSegments>
//     </static>
//     <mutable>
//       <TransactionPhase>Initialisation</TransactionPhase>
//     </mutable>
//   </header>
//   <body>
//     <PreValidation authenticate="true">
//       <DataDigest SignatureVersion="A006"> MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTI=</DataDigest>
//     </PreValidation>
//     <DataTransfer>
//       <DataEncryptionInfo authenticate="true">
//         <EncryptionPubKeyDigest Version="E002" Algorithm="http://www.w3.org/2001/04/xmlenc#sha256">..here hash value of the public bank key for encryption..</EncryptionPubKeyDigest>
//         <TransactionKey>EIGI4En6KEB6ArEzw+iq4N1wm6EptcyxXxStA...</TransactionKey>
//         <HostID>EBIXHOST</HostID>
//       </DataEncryptionInfo>
//       <SignatureData authenticate="true">n6KEB6ArEzw+iq4N1wm6EptcyxXxStAO...</SignatureData>
//       <DataDigest SignatureVersion="A006"> MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTI=</DataDigest>
//     </DataTransfer>
//   </body>
// </ebicsRequest>

// Load the above XML from a file.
sbXml := CkStringBuilder_Create();
success := CkStringBuilder_LoadFile(sbXml,'qa_data/xml_dsig/ebics/fileToSign.xml','utf-8');
if (success = False) then
  begin
    Memo1.Lines.Add('Failed to load XML input file.');
    Exit;
  end;

gen := CkXmlDSigGen_Create();

// We're going to insert the signature between the </header> and the <body>
CkXmlDSigGen_putSigLocation(gen,'ebicsRequest|header');

// Set the SigLocationMod = 1 to insert *after* the SigLocation
CkXmlDSigGen_putSigLocationMod(gen,1);

// We wish to use "ds" for the namespace..
CkXmlDSigGen_putSigNamespacePrefix(gen,'ds');
CkXmlDSigGen_putSigNamespaceUri(gen,'http://www.w3.org/2000/09/xmldsig#');

// Specify canonicalization and hash algorithms
CkXmlDSigGen_putSignedInfoCanonAlg(gen,'C14N');
CkXmlDSigGen_putSignedInfoDigestMethod(gen,'sha256');

// Add the reference.
// For EBICS signatures, we pass the special keyword "EBICS" in the 1st argument.
// This tells Chilkat to create the reference using URI="#xpointer(//*[@authenticate='true'])"
CkXmlDSigGen_AddSameDocRef(gen,'EBICS','sha256','C14N','','');

// Provide our certificate + private key. (PFX password is test123)
// (You'll use your own certificate, which can be loaded from many different sources by Chilkat, including smart cards.)
cert := CkCert_Create();
success := CkCert_LoadPfxFile(cert,'qa_data/pfx/cert_test123.pfx','test123');
if (success = False) then
  begin
    Memo1.Lines.Add(CkCert__lastErrorText(cert));
    Exit;
  end;

success := CkXmlDSigGen_SetX509Cert(gen,cert,True);
if (success = False) then
  begin
    Memo1.Lines.Add(CkXmlDSigGen__lastErrorText(gen));
    Exit;
  end;

// We don't want a KeyInfo to be included.
CkXmlDSigGen_putKeyInfoType(gen,'None');

// Request an indented signature for readability.
// This can be removed after debugging (for a more compact signature).
CkXmlDSigGen_putBehaviors(gen,'IndentedSignature');

// Sign the XML.
success := CkXmlDSigGen_CreateXmlDSigSb(gen,sbXml);
if (success = False) then
  begin
    Memo1.Lines.Add(CkXmlDSigGen__lastErrorText(gen));
    Exit;
  end;

// This is the XML with the EBICS signature added:

// <?xml version="1.0" encoding="UTF-8"?>
// <ebicsRequest
// xmlns="urn:org:ebics:H005"
// xmlns:ds="http://www.w3.org/2000/09/xmldsig#"
// xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
// xsi:schemaLocation="urn:org:ebics:H005 ebics_request_H005.xsd"
// Version="H005" Revision="1">
//   <header authenticate="true">
//     <static>
//       <HostID>EBIXHOST</HostID>
//       <Nonce>BDA2312973890654FAC9879A89794E65</Nonce>
//       <Timestamp>2005-01-30T15:30:45.123Z</Timestamp>
//       <PartnerID>CUSTM001</PartnerID>
//       <UserID>USR100</UserID>
//       <Product Language="en" InstituteID="Institute ID">Product Identifier</Product>
//       <OrderDetails>
//         <AdminOrderType>BTU</AdminOrderType>
//         <BTUOrderParams>
//           <Service>
//             <ServiceName>SCT</ServiceName>
//             <MsgName>pain.001</MsgName>
//           </Service>
//         </BTUOrderParams>
//       </OrderDetails>
//       <BankPubKeyDigests>
//         <Authentication Version="X002" Algorithm="http://www.w3.org/2001/04/xmlenc#sha256">1H/rQr2Axe9hYTV2n/tCp+3UIQQ=</Authentication>
//         <Encryption Version="E002" Algorithm="http://www.w3.org/2001/04/xmlenc#sha256">2lwiueWOIER823jSoiOkjl+woeI=</Encryption>
//       </BankPubKeyDigests>
//       <SecurityMedium>0000</SecurityMedium>
//       <NumSegments>2</NumSegments>
//     </static>
//     <mutable>
//       <TransactionPhase>Initialisation</TransactionPhase>
//     </mutable>
//   </header><AuthSignature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
//   <ds:SignedInfo>
//     <ds:CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
//     <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
//     <ds:Reference URI="#xpointer(//*[@authenticate='true'])">
//       <ds:Transforms>
//         <ds:Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
//       </ds:Transforms>
//       <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
//       <ds:DigestValue>jjLD90BedcIVxFENHse6pOnRubVUlHpKjXUF5BUd00k=</ds:DigestValue>
//     </ds:Reference>
//   </ds:SignedInfo>
//   <ds:SignatureValue>TlVgCXGf+3kKZ4LLwqxKoMaDZSBdiDRcGpdKB+tFZ7MZse9jDqtCai7PxcvRLC7yRGRj3XWrAB6IVqXh6tXGqiAtRfa7XjezvJTmUdMEJ3hTEgKqm7cKjjZX5C+lN5XTJghOy0X1bZBl/NBJu/aqY9s8PKsD5Cpm8bFkl2ReBBTCTSF5CRK3XZr+fvWuUX2sFrFS5UDXG8/cmhaKHT15LBOJgYuLYr80dtL251Jy20rIJ5KK8xUz9gpexE61Y/ml6mUPLm8YgdACRdNvCOPRLjCqYwFbnfgaVO6MtSRG819rWyNtBhqVxdzbntiV1UobKbwFiJ1LMMHF0NCo2LGLCw==</ds:SignatureValue>
// </AuthSignature>
//   <body>
//     <PreValidation authenticate="true">
//       <DataDigest SignatureVersion="A006"> MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTI=</DataDigest>
//     </PreValidation>
//     <DataTransfer>
//       <DataEncryptionInfo authenticate="true">
//         <EncryptionPubKeyDigest Version="E002" Algorithm="http://www.w3.org/2001/04/xmlenc#sha256">..here hash value of the public bank key for encryption..</EncryptionPubKeyDigest>
//         <TransactionKey>EIGI4En6KEB6ArEzw+iq4N1wm6EptcyxXxStA...</TransactionKey>
//         <HostID>EBIXHOST</HostID>
//       </DataEncryptionInfo>
//       <SignatureData authenticate="true">n6KEB6ArEzw+iq4N1wm6EptcyxXxStAO...</SignatureData>
//       <DataDigest SignatureVersion="A006"> MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTI=</DataDigest>
//     </DataTransfer>
//   </body>
// </ebicsRequest>

Memo1.Lines.Add('Here''s the EBICS signed XML:');
Memo1.Lines.Add(CkStringBuilder__getAsString(sbXml));
Memo1.Lines.Add('----');

// Verify the signature we just produced...
verifier := CkXmlDSig_Create();
success := CkXmlDSig_LoadSignatureSb(verifier,sbXml);
if (success = False) then
  begin
    Memo1.Lines.Add(CkXmlDSig__lastErrorText(verifier));
    Exit;
  end;

// The signature has no KeyInfo, so we must externally provide the key.
pubKey := CkPublicKey_Create();
CkCert_GetPublicKey(cert,pubKey);

success := CkXmlDSig_SetPublicKey(verifier,pubKey);
if (success = False) then
  begin
    Memo1.Lines.Add(CkXmlDSig__lastErrorText(verifier));
    Exit;
  end;

success := CkXmlDSig_VerifySignature(verifier,True);
if (success = False) then
  begin
    Memo1.Lines.Add(CkXmlDSig__lastErrorText(verifier));
    Exit;
  end;

Memo1.Lines.Add('EBICS signature verified.');

CkStringBuilder_Dispose(sbXml);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
CkXmlDSig_Dispose(verifier);
CkPublicKey_Dispose(pubKey);

end;