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(Visual Basic 6.0) Verify SOAP XML using a wsse:SecurityTokenReferenceThis example verifies a SOAP XML Digital Signature where the KeyInfo in the XML Signature is a wsse:SecurityTokenReference to the X.509 certificate embedded elsewhere in the SOAP XML.
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. ' The SOAP XML with digital signature verified in this example is available at ' https://www.chilkatsoft.com/exampleData/signedSoapBinarySecurityToken.xml Dim signedSoapXmlUrl As String signedSoapXmlUrl = "https://www.chilkatsoft.com/exampleData/signedSoapBinarySecurityToken.xml" ' First, let's get the signed SOAP XML.. Dim http As New ChilkatHttp Dim sbXml As New ChilkatStringBuilder Dim success As Long success = http.QuickGetSb(signedSoapXmlUrl,sbXml) If (success <> 1) Then Debug.Print http.LastErrorText Exit Sub End If ' The signed XML downloaded from the above URL contains the following. ' Note: Everything we need to verify the signature is already available within the signed XML. ' The KeyInfo part of the Signature contains a reference to the wsse:BinarySecurityToken ' For clarity, here is the KeyInfo section extracted from the Signature below: ' ' <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> ' ' Chilkat has the capability to automatically follow the SecurityTokenReference. It will automatically locate the ' certificate contained in the wsse:BinarySecurityToken element (in this case identified by Id="x509cert00"), ' automatically extracts the public key from the base64 X.509 certificate, and uses it to verify the 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">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> ' ' To verify this signature, we simply load and verify: Dim verifier As New ChilkatXmlDSig success = verifier.LoadSignatureSb(sbXml) If (success <> 1) Then Debug.Print verifier.LastErrorText Exit Sub End If Dim bVerified As Long bVerified = verifier.VerifySignature(1) If (bVerified <> 1) Then Debug.Print verifier.LastErrorText Exit Sub End If Debug.Print "Signature verified!" |
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