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(Unicode C) Alliance Access LAU Sign Message (XML Signature using HMAC-SHA-256)Demonstrates how to sign XML according to the requirements for Alliance Access LAU (Local Authentication) using HMAC-SHA-256.
#include <C_CkXmlW.h> #include <C_CkXmlDSigGenW.h> #include <C_CkStringBuilderW.h> void ChilkatSample(void) { BOOL success; HCkXmlW xmlToSign; HCkXmlDSigGenW gen; HCkStringBuilderW sbXml; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // We begin with this message: // <?xml version="1.0" encoding="utf-8"?> // <Saa:DataPDU xmlns:Saa="urn:swift:saa:xsd:saa.2.0" xmlns:Sw="urn:swift:snl:ns.Sw" // xmlns:SwGbl="urn:swift:snl:ns.SwGbl" xmlns:SwInt="urn:swift:snl:ns:SwInt" xmlns:SwSec="url:swift:snl:ns.SwSec"> // <Saa:Revision>2.0.7</Saa:Revision> // <Saa:Header> // <Saa:Message> // <test>blah blah</test> // </Saa:Message> // </Saa:Header> // <Saa:Body>...</Saa:Body> // <Saa:LAU> // </Saa:LAU> // </Saa:DataPDU> // And we want so sign to create this as the result: // The signed XML we'll create will not be indented and pretty-printed like this. // Instead, we'll use the "CompactSignedXml" behavior to produce compact single-line XML. // <?xml version="1.0" encoding="utf-8"?> // <Saa:DataPDU xmlns:Saa="urn:swift:saa:xsd:saa.2.0" xmlns:Sw="urn:swift:snl:ns.Sw" // xmlns:SwGbl="urn:swift:snl:ns.SwGbl" xmlns:SwInt="urn:swift:snl:ns:SwInt" xmlns:SwSec="url:swift:snl:ns.SwSec"> // <Saa:Revision>2.0.7</Saa:Revision> // <Saa:Header> // <Saa:Message> // <test>blah blah</test> // </Saa:Message> // </Saa:Header> // <Saa:Body>...</Saa:Body> // <Saa:LAU> // <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#"/> // <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#hmac-sha256"/> // <ds:Reference URI=""> // <ds:Transforms> // <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/> // <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>Y7oScHnYOUQvni/TSzZbDec+HR+mWIFH149GXpwj1Ws=</ds:DigestValue> // </ds:Reference> // </ds:SignedInfo> // <ds:SignatureValue>6ynF/FcwbPsHrtlj3h2agJigdnvpbO6hOzKSRGzqkw0=</ds:SignatureValue> // </ds:Signature> // </Saa:LAU> // </Saa:DataPDU> success = TRUE; // Create the XML to be signed... // (The XML does not need to be created this way. It can be loaded from a file or a string.) // Also, use this online tool to generate code from sample XML: // Generate Code to Create XML xmlToSign = CkXmlW_Create(); CkXmlW_putTag(xmlToSign,L"Saa:DataPDU"); CkXmlW_AddAttribute(xmlToSign,L"xmlns:Saa",L"urn:swift:saa:xsd:saa.2.0"); CkXmlW_AddAttribute(xmlToSign,L"xmlns:Sw",L"urn:swift:snl:ns.Sw"); CkXmlW_AddAttribute(xmlToSign,L"xmlns:SwGbl",L"urn:swift:snl:ns.SwGbl"); CkXmlW_AddAttribute(xmlToSign,L"xmlns:SwInt",L"urn:swift:snl:ns:SwInt"); CkXmlW_AddAttribute(xmlToSign,L"xmlns:SwSec",L"url:swift:snl:ns.SwSec"); CkXmlW_UpdateChildContent(xmlToSign,L"Saa:Revision",L"2.0.7"); CkXmlW_UpdateChildContent(xmlToSign,L"Saa:Header|Saa:Message|test",L"blah blah"); CkXmlW_UpdateChildContent(xmlToSign,L"Saa:Body",L"..."); CkXmlW_UpdateChildContent(xmlToSign,L"Saa:LAU",L""); gen = CkXmlDSigGenW_Create(); CkXmlDSigGenW_putSigLocation(gen,L"Saa:DataPDU|Saa:LAU"); CkXmlDSigGenW_putSigLocationMod(gen,0); CkXmlDSigGenW_putSigNamespacePrefix(gen,L"ds"); CkXmlDSigGenW_putSigNamespaceUri(gen,L"http://www.w3.org/2000/09/xmldsig#"); CkXmlDSigGenW_putSignedInfoCanonAlg(gen,L"EXCL_C14N"); CkXmlDSigGenW_putSignedInfoDigestMethod(gen,L"sha256"); // You may alternatively choose "IndentedSignature" instead of "CompactSignedXml" CkXmlDSigGenW_putBehaviors(gen,L"CompactSignedXml"); CkXmlDSigGenW_AddSameDocRef(gen,L"",L"sha256",L"EXCL_C14N",L"",L""); // Specify the HMAC key. // For example, if the HMAC key is to be the us-ascii bytes of the string "secret", // the HMAC key can be set in any of the following ways (and also more ways not shown here..) CkXmlDSigGenW_SetHmacKey(gen,L"secret",L"ascii"); // or CkXmlDSigGenW_SetHmacKey(gen,L"c2VjcmV0",L"base64"); // or CkXmlDSigGenW_SetHmacKey(gen,L"736563726574",L"hex"); // Sign the XML.. sbXml = CkStringBuilderW_Create(); CkXmlW_GetXmlSb(xmlToSign,sbXml); success = CkXmlDSigGenW_CreateXmlDSigSb(gen,sbXml); if (success != TRUE) { wprintf(L"%s\n",CkXmlDSigGenW_lastErrorText(gen)); CkXmlW_Dispose(xmlToSign); CkXmlDSigGenW_Dispose(gen); CkStringBuilderW_Dispose(sbXml); return; } // Save the signed XML to a file. success = CkStringBuilderW_WriteFile(sbXml,L"qa_output/signedXml.xml",L"utf-8",FALSE); // Show the signed XML. wprintf(L"%s\n",CkStringBuilderW_getAsString(sbXml)); CkXmlW_Dispose(xmlToSign); CkXmlDSigGenW_Dispose(gen); CkStringBuilderW_Dispose(sbXml); } |
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