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(Classic ASP) Create XML Signature with KeyInfo / X509Data / X509SKIThis example demonstrates how to create an XML Digital Signature where the KeyInfo element contains an X509Data element,
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <% ' 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 to be signed. ' ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.StringBuilder") set sbXml = Server.CreateObject("Chilkat.StringBuilder") ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Http") set http = Server.CreateObject("Chilkat.Http") success = http.QuickGetSb("https://www.chilkatsoft.com/exampleData/soapToSign.xml",sbXml) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>" Response.End End If ' The SOAP XML contains this: ' <?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> ' ------------------------------------------------------------------------- ' Step 2: Get the test certificate and private key stored in a .pfx ' ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.BinData") set pfxData = Server.CreateObject("Chilkat.BinData") success = http.QuickGetBd("https://chilkatdownload.com/example_data/testcertificate.pfx",pfxData) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>" Response.End End If ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Pfx") set pfx = Server.CreateObject("Chilkat.Pfx") password = "test" success = pfx.LoadPfxEncoded(pfxData.GetEncoded("base64"),"base64",password) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( pfx.LastErrorText) & "</pre>" Response.End End If ' ------------------------------------------------------------------------- ' Step 3: Get the certificate from the PFX. ' ' cert is a Chilkat.Cert Set cert = pfx.GetCert(0) If (pfx.LastMethodSuccess <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( pfx.LastErrorText) & "</pre>" Response.End End If ' Prepare for signing... ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.XmlDSigGen") set gen = Server.CreateObject("Chilkat.XmlDSigGen") ' Indicate where the Signature will be inserted. gen.SigLocation = "SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security" ' Add a reference to the fragment of the XML to be signed. ' Note: "Body" refers to the XML element having an "id" equal to "Body", where "id" is case insensitive ' and where any namespace might qualify the attribute. In this case, the SOAP-ENV:Body fragment is signed ' NOT because the tag = "Body", but because it has SOAP-SEC:id="Body" success = gen.AddSameDocRef("Body","sha1","EXCL_C14N","","") ' (You can read about the SignedInfoPrefixList in the online reference documentation. It's optional..) gen.SignedInfoPrefixList = "wsse SOAP-ENV" ' Provide the private key for signing via the certificate, and indicate that ' we want only the Subject Key Identifier (SKI) of the certificate embedded in the KeyInfo. gen.KeyInfoType = "X509Data" gen.X509Type = "SKI" ' Note: Because our certificate was loaded from a PFX which also contained the private key, ' Chilkat automatically knows and has the private key associated with the certificate. ' We set bUsePrivateKey to tell the SetX509Cert method to automatically use the private key ' associated with the certificate for signing. If, for example, we obtained the certificate ' by loading from a .cer file, then we would not already have the associated private key. ' In that case, the application could explicitly load the cert's private key from some ' other source, such as a .key, .pem, etc. and then call gen.SetPrivateKey. bUsePrivateKey = 1 success = gen.SetX509Cert(cert,bUsePrivateKey) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( gen.LastErrorText) & "</pre>" Response.End End If ' Everything's specified. Now create and insert the Signature success = gen.CreateXmlDSigSb(sbXml) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( gen.LastErrorText) & "</pre>" Response.End End If ' Examine the XML with the digital signature inserted Response.Write "<pre>" & Server.HTMLEncode( sbXml.GetAsString()) & "</pre>" ' Here is the actual output. A pretty-printed version of the output is shown below, but the addition of whitespace ' in the XML invalidates 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/2000/09/xmldsig#sha1"/><ds:DigestValue>PIiVPpuMc1jGpWaL8ftzTOcc4gc=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>Rlta8LplnFH0q8L+UeVmh4Smdn6oVETi4RoUmpT/KQX3RNAIOdCVE3b7gjmx5+3vp3DhjphOsZvW6dXzkI46xt9pD5otp3b/ZppGqKzltggo9gyQtPvJ8ltJZqVKYOGo5uElRFF/xm/zcx5Y3E14t+LYVSlv2lbem/zZ5zQ7ai8DmGD33id7nGu+MXVwb3kGkJFYoB/GOXtwsep+bcilMglTp8/7SBfBaVFKxWVBp4N2NW7bGlyDct8FaCk9hXQDNm/kqne9GU87tgh8/rbsFCYgyqIRMIvMPvhRWr2EKdEKyLtlZ8w0KYJYpgsf4T7SDghemzXkJoJPrfUQmHudIw==</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509SKI>bDMtm8bAimMlGLU2M/82W8+y3tM=</ds:X509SKI></ds:X509Data></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> ' ---------------------------------------------------------------- ' Pretty-printed output (invalidates the signature) ' This makes it easier to see the X509IssuerSerial contained within the KeyInfo. ' <?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/2000/09/xmldsig#sha1" /> ' <ds:DigestValue>PIiVPpuMc1jGpWaL8ftzTOcc4gc=</ds:DigestValue> ' </ds:Reference> ' </ds:SignedInfo> ' <ds:SignatureValue>Rlta8LplnFH0q8L+UeVmh4Smdn6oVETi4RoUmpT/KQX3RNAIOdCVE3b7gjmx5+3vp3DhjphOsZvW6dXzkI46xt9pD5otp3b/ZppGqKzltggo9gyQtPvJ8ltJZqVKYOGo5uElRFF/xm/zcx5Y3E14t+LYVSlv2lbem/zZ5zQ7ai8DmGD33id7nGu+MXVwb3kGkJFYoB/GOXtwsep+bcilMglTp8/7SBfBaVFKxWVBp4N2NW7bGlyDct8FaCk9hXQDNm/kqne9GU87tgh8/rbsFCYgyqIRMIvMPvhRWr2EKdEKyLtlZ8w0KYJYpgsf4T7SDghemzXkJoJPrfUQmHudIw==</ds:SignatureValue> ' <ds:KeyInfo> ' <ds:X509Data> ' <ds:X509SKI>bDMtm8bAimMlGLU2M/82W8+y3tM=</ds:X509SKI> ' </ds:X509Data> ' </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> %> </body> </html> |
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