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(AutoIt) Create XML Signature with Certificate's Private KeyDemonstrates how to create an XML digital signature using a certificate's RSA private key. This example loads the certificate from a PFX, and uses the cert's associated private key to sign. The public key is embedded in the XML signature as a ds:KeyInfo / ds:KeyValue / dsRSAKeyValue element. This example requires Chilkat v9.5.0.71 or greater.
; This example requires the Chilkat API to have been previously unlocked. ; See Global Unlock Sample for sample code. ; The SOAP XML to be signed in this example contains the following: ; <?xml version="1.0" encoding="UTF-8" standalone="no" ?> ; <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"> ; <SOAP-ENV:Header> ; <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" SOAP-ENV:mustUnderstand="1"></wsse:Security> ; </SOAP-ENV:Header> ; <SOAP-ENV:Body xmlns:SOAP-SEC="http://schemas.xmlsoap.org/soap/security/2000-12" SOAP-SEC:id="Body"> ; <z:FooBar xmlns:z="http://example.com" /> ; </SOAP-ENV:Body> ; </SOAP-ENV:Envelope> ; ; The above XML is available at https://www.chilkatsoft.com/exampleData/soapToSign.xml ; Fetch the XML and then sign it.. Local $sUrl = "https://www.chilkatsoft.com/exampleData/soapToSign.xml" $oHttp = ObjCreate("Chilkat.Http") $oSbSoapXml = ObjCreate("Chilkat.StringBuilder") Local $bSuccess = $oHttp.QuickGetSb($sUrl,$oSbSoapXml) If ($bSuccess <> True) Then ConsoleWrite($oHttp.LastErrorText & @CRLF) Exit EndIf ; Load a PFX file containing the certificate + private key. $oCert = ObjCreate("Chilkat.Cert") $bSuccess = $oCert.LoadPfxFile("/somedir/myPfx.pfx","pfx_password") If ($bSuccess <> True) Then ConsoleWrite($oCert.LastErrorText & @CRLF) Exit EndIf ; Get the RSA private key for signing... Local $oRsaKey = $oCert.ExportPrivateKey() If ($oCert.LastMethodSuccess <> True) Then ConsoleWrite($oCert.LastErrorText & @CRLF) Exit EndIf ; To create the XML digital signature (i.e. embed the signature within ; the SOAP XML), we specify what is desired, and then call the method to ; create the XML signature. ; ; For example, the application must provide the following: ; - Where to put the signature. ; - What to sign. ; - The algorithms to be used. ; - The key to be used for signing. ; $oXmlSigGen = ObjCreate("Chilkat.XmlDSigGen") ; In this example, we're going to put the signature within the wsse:Security element. ; To specify the location, set the SigLocation property to the XML path to this element, ; using vertical bar characters to separate tags. $oXmlSigGen.SigLocation = "SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security" ; An XML digital signature contains one or more references. These are references to the parts ; of the XML document to be signed (a same document reference), or can be external references. ; This example will add a single same-document reference. We'll add a reference to the XML fragment ; at SOAP-ENV:Body, which is indicated by providing the value of the "ID" attribute (where "ID" is case ; insensitive). For each same-document reference, we must also indicate the hash algorithm and XML canonicalization ; algorithm to be used. For this example we'll choose SHA-256 and Exclusive XML Canonicalization. $oXmlSigGen.AddSameDocRef("Body","sha256","EXCL_C14N","","") ; Let's provide the RSA key to be used for signing: $oXmlSigGen.SetPrivateKey($oRsaKey) ; We're leaving the following properties at their default values: ; ; - SigNamespacePrefix (default is "ds") ; - SigningAlg (for RSA keys. The default is PKCS1-v1_5, can be changed to RSASSA-PSS.) ; - SignedInfoCanonAlg (default is EXCL_C14N) ; - SignedInfoDigestMethod (default is sha256) ; - KeyInfoType (default is "KeyValue", where the RSA public key is included in the Signature) ; Note: Each Reference has it's own specified algorithms for XML canonicalization and hashing, ; and the actual signature part (the SignedInfo) has it's own algorithms for the same. ; They may or may not be the same. In this example, we use Exclusive XML Canonicalization and SHA-256 throughout. ; Finally, we're going to set one property that's optional, but commonly used. ; It's the SignedInfoPrefixList. In this case, we're using Exclusive Canonicalization, and the signature ; will be placed in a location within the XML document where namespace prefixes are used in the ancestors. ; Specifically, the "wsse" and "SOAP-ENV" namespace prefixes are used. $oXmlSigGen.SignedInfoPrefixList = "wsse SOAP-ENV" ; OK, everything's specified, so let's create the XML digital signature: ; This in-place signs the XML. If successful, sbSoapXml will contain the ; XML with the digital signature at the specified location. $bSuccess = $oXmlSigGen.CreateXmlDSigSb($oSbSoapXml) If ($bSuccess <> True) Then ConsoleWrite($oXmlSigGen.LastErrorText & @CRLF) Exit EndIf ; Examine the signed SOAP XML: ConsoleWrite($oSbSoapXml.GetAsString() & @CRLF) ; This is the signed SOAP XML. ; Chilkat emits the Signature in compact form on a single line. Whitespace in XML signatures ; matters. Chilkat's opinion is that writing the Signature without whitespace minimizes the chance ; for problems with whatever software might be verifying the signature. ; <?xml version="1.0" encoding="UTF-8" standalone="no" ?> ; <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"> ; <SOAP-ENV:Header> ; <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" SOAP-ENV:mustUnderstand="1"><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="#Body"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>OwgHPZNfDkXnZsjpfzXqAcT3RV3HzmTsEy2bP44FJ0M=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>C+7FWngUpJ33Q1yq8uuscjCyPN2IO4cJhpMv03Jrrht1V+4gvJQLIBk6HHjo1uPQyfYj6zji3pg+fOyGUptp17CsRvjCzSpP35vB2lEzHeS8dcY8XfrEtTP/0FNn75LmhhkOPy0wjWkgDVbgzhXpEk9az8r8fQVTM3vrcmXT+WdMWJXKBRFt6PLAhsFt0scOFTWAkLGyCwygzimDKX2nT63TOit9BigtIx7fPRuMkbybMKCGGABq2DiEbvrPOiN3SUYpyMNR9KehRAGN+OWnESaDC6DhOvbKR88XHkM+GeaRe9PWdrRHrwGfp3qgolKjR/wFRSa1YGSBKAhDJFBcdg==</ds:SignatureValue><ds:KeyInfo><ds:KeyValue><ds:RSAKeyValue><ds:Modulus>sXeRhM55P13FbpNcXAMR3olbw2Wa6keZIHu5YTZYUBTlYWId+pNiwUz3zFIEo+0IfYR0H27ybIycQO+1IIzJofUFNMAL3tZps2OKPlsjuCPls6kXpXhv/gvhux8LrCtp4PcKWqJ6QVOZKChc7WAx40qFWzHi57ueqRTv3x0kESqGg/VjsqyTEvb55psJO2RsfhLT7+YVh3hImRM3RDaJdkTkPuOxeFyT6N7VXD09329sLuS3QkUbE9zEKDnz9X3d8dEQdJhSI9ba5fxl8R7fu8pB67ElfzFml96X1jLFtzy1pzOT5Fc4ROcaqlYckVzdBq9sxezm6MYmDBjNAcibRw==</ds:Modulus><ds:Exponent>AQAB</ds:Exponent></ds:RSAKeyValue></ds:KeyValue></ds:KeyInfo></ds:Signature></wsse:Security> ; </SOAP-ENV:Header> ; <SOAP-ENV:Body xmlns:SOAP-SEC="http://schemas.xmlsoap.org/soap/security/2000-12" SOAP-SEC:id="Body"> ; <z:FooBar xmlns:z="http://example.com" /> ; </SOAP-ENV:Body> ; </SOAP-ENV:Envelope> ; Here's the signature part formatted for easier reading. ; (Adding whitespace to the SignedInfo breaks the signature, so you wouldn't want to do this..) ; <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="#Body"> ; <ds:Transforms> ; <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" /> ; </ds:Transforms> ; <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" /> ; <ds:DigestValue>OwgHPZNfDkXnZsjpfzXqAcT3RV3HzmTsEy2bP44FJ0M=</ds:DigestValue> ; </ds:Reference> ; </ds:SignedInfo> ; <ds:SignatureValue>C+7FWngUp....BKAhDJFBcdg==</ds:SignatureValue> ; <ds:KeyInfo> ; <ds:KeyValue> ; <ds:RSAKeyValue> ; <ds:Modulus>sXeRhM55P13FbpNcXAMR....MYmDBjNAcibRw==</ds:Modulus> ; <ds:Exponent>AQAB</ds:Exponent> ; </ds:RSAKeyValue> ; </ds:KeyValue> ; </ds:KeyInfo> ; </ds:Signature> |
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