Dart Requires Chilkat v11.0.0+
Dart
Sign SOAP XML using a wsse:SecurityTokenReference
See more XML Digital Signatures Examples
This example signs SOAP XML such that the KeyInfo in the XML Signature is a wsse:SecurityTokenReference to the X.509 certificate embedded elsewhere in the SOAP XML.Chilkat Dart Downloads
import 'package:chilkat/chilkat.dart';
void main() {
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// To begin, we'll need a PFX containing a certificate and private key, and the SOAP XML to be signed.
// Chilkat provides sample data at chilkatsoft.com and chilkatdownload.com, and our first step is to download.
// -------------------------------------------------------------------------
// Step 1: Get the SOAP XML template to be signed.
//
final sbXml = CkStringBuilder();
final http = CkHttp();
try {
http.quickGetSb('https://www.chilkatsoft.com/exampleData/wssSoapTemplate.xml', sbXml);
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
// The SOAP XML template contains this:
// <?xml version="1.0" encoding="UTF8"?>
// <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
// <SOAP-ENV:Header>
// <wsse:Security xmlns:ds="http://www.w3.org/2000/09/xmldsig#"
// xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd"
// xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd"
// xmlns:xenc="http://www.w3.org/2001/04/xmlenc#" SOAP-ENV:mustUnderstand="1">
// <wsse:BinarySecurityToken
// EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary"
// ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509"
// wsu:Id="x509cert00">BASE64_CERT</wsse:BinarySecurityToken>
// </wsse:Security>
// </SOAP-ENV:Header>
// <SOAP-ENV:Body xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="TheBody">
// <getVersion xmlns="http://msgsec.wssecfvt.ws.ibm.com"/>
// </SOAP-ENV:Body>
// </SOAP-ENV:Envelope>
//
// -------------------------------------------------------------------------
// Step 2: Get the test certificate and private key stored in a .pfx
//
final pfxData = CkBinData();
try {
http.quickGetBd('http://chilkatdownload.com/example_data/testcertificate.pfx', pfxData);
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
final pfx = CkPfx();
final password = 'test';
try {
pfx.loadPfxEncoded(pfxData.getEncoded('base64'), 'base64', password);
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
// -------------------------------------------------------------------------
// Step 3: Get the certificate from the PFX.
//
final cert = CkCert();
try {
pfx.certAt(0, cert);
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
// -------------------------------------------------------------------------
// Step 4: Replace "BASE64_CERT" with the actual base64 encoded certificate.
//
final bdCert = CkBinData();
cert.exportCertDerBd(bdCert);
final numReplaced = sbXml.replace('BASE64_CERT', bdCert.getEncoded('base64'));
// -------------------------------------------------------------------------
// Step 5: Build the wsse:SecurityTokenReference XML.
// This will be the CustomKeyInfoXml (see below).
//
final refXml = CkXml();
refXml.tag = 'wsse:SecurityTokenReference';
refXml.updateAttrAt('wsse:Reference', true, 'URI', '#x509cert00');
refXml.updateAttrAt('wsse:Reference', true, 'ValueType', 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509');
// The above lines of code builds the following XML:
// <wsse:SecurityTokenReference>
// <wsse:Reference URI="#x509cert00" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509" />
// </wsse:SecurityTokenReference>
//
refXml.emitXmlDecl = false;
print(refXml.getXml());
// -------------------------------------------------------------------------
// Step 6: Setup the XML Digital Signature Generator and add the XML Signature.
//
final gen = CkXmlDSigGen();
gen.sigLocation = 'SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security';
gen.signedInfoPrefixList = 'wsse SOAP-ENV';
gen.addSameDocRef('TheBody', 'sha1', 'EXCL_C14N', '', '');
gen.keyInfoType = 'Custom';
refXml.emitCompact = true;
gen.customKeyInfoXml = refXml.getXml();
gen.setX509Cert(cert, true);
try {
gen.createXmlDSigSb(sbXml);
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
// Examine the signed XML
print(sbXml.getAsString());
// Pretty-printed, the XML signature looks as shown here:
// (The exact XML signature is shown below. Pretty-printing invalidates the XML signature.)
// <?xml version="1.0" encoding="UTF8" ?>
// <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
// <SOAP-ENV:Header>
// <wsse:Security xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:xenc="http://www.w3.org/2001/04/xmlenc#" SOAP-ENV:mustUnderstand="1">
// <wsse:BinarySecurityToken EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509" wsu:Id="x509cert00">MIID...</wsse:BinarySecurityToken>
// <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
// <ds:SignedInfo>
// <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#">
// <InclusiveNamespaces xmlns="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="wsse SOAP-ENV" />
// </ds:CanonicalizationMethod>
// <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256" />
// <ds:Reference URI="#TheBody">
// <ds:Transforms>
// <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
// </ds:Transforms>
// <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
// <ds:DigestValue>VhsSnaEAFsY0OYegKQh99v9csXg=</ds:DigestValue>
// </ds:Reference>
// </ds:SignedInfo>
// <ds:SignatureValue>Ynp3H4rtzpXIh4TaVxkpEkS1bMCCu672aeCzUOzheNNfnpmLsCZz3+zQjMBbchPggCayC5ihpEdhRe3XvPXjPXXAgxDP4mic091QPmjHlmUcu8yqRKfxnPtD35nqaxDtCYw+jGIzj+ch094vA4RPCfY8JQnb1mpy1ZjjsMW8741CIh1epbsd/0bZt6tfINUQ37seg07yvLbCJZ/Zf+h8FlFryQk6lHTTeZl/GfQ9NlDBcShby3x8Hc1KwW++zFqEA7G783R9AYPYn3fWTOBhYk5gkgFc+HaPRLR/L0Bp7ZPbmOR/iZQ+HK4W672tTdN/R2GdN7/deV7QTp2DYK1Z8w==</ds:SignatureValue>
// <ds:KeyInfo>
// <wsse:SecurityTokenReference>
// <wsse:Reference URI="#x509cert00" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509" />
// </wsse:SecurityTokenReference>
// </ds:KeyInfo>
// </ds:Signature>
// </wsse:Security>
// </SOAP-ENV:Header>
// <SOAP-ENV:Body xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="TheBody">
// <getVersion xmlns="http://msgsec.wssecfvt.ws.ibm.com" />
// </SOAP-ENV:Body>
// </SOAP-ENV:Envelope>
//
// --------------------------------------------------------------------------------------------
// This is the XML signature, which is also available at https://www.chilkatsoft.com/exampleData/signedSoapBinarySecurityToken.xml
//
// <?xml version="1.0" encoding="UTF8"?>
// <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
// <SOAP-ENV:Header>
// <wsse:Security xmlns:ds="http://www.w3.org/2000/09/xmldsig#"
// xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd"
// xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd"
// xmlns:xenc="http://www.w3.org/2001/04/xmlenc#" SOAP-ENV:mustUnderstand="1">
// <wsse:BinarySecurityToken
// EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary"
// ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509"
// wsu:Id="x509cert00">MIIDg...</wsse:BinarySecurityToken>
// <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"><InclusiveNamespaces xmlns="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="wsse SOAP-ENV"/></ds:CanonicalizationMethod><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#TheBody"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/><ds:DigestValue>VhsSnaEAFsY0OYegKQh99v9csXg=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>Ynp3H4rtzpXIh4TaVxkpEkS1bMCCu672aeCzUOzheNNfnpmLsCZz3+zQjMBbchPggCayC5ihpEdhRe3XvPXjPXXAgxDP4mic091QPmjHlmUcu8yqRKfxnPtD35nqaxDtCYw+jGIzj+ch094vA4RPCfY8JQnb1mpy1ZjjsMW8741CIh1epbsd/0bZt6tfINUQ37seg07yvLbCJZ/Zf+h8FlFryQk6lHTTeZl/GfQ9NlDBcShby3x8Hc1KwW++zFqEA7G783R9AYPYn3fWTOBhYk5gkgFc+HaPRLR/L0Bp7ZPbmOR/iZQ+HK4W672tTdN/R2GdN7/deV7QTp2DYK1Z8w==</ds:SignatureValue><ds:KeyInfo><wsse:SecurityTokenReference><wsse:Reference URI="#x509cert00" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509" /></wsse:SecurityTokenReference></ds:KeyInfo></ds:Signature></wsse:Security>
// </SOAP-ENV:Header>
// <SOAP-ENV:Body xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="TheBody">
// <getVersion xmlns="http://msgsec.wssecfvt.ws.ibm.com"/>
// </SOAP-ENV:Body>
// </SOAP-ENV:Envelope>
//
}