(SQL Server) Create AuthNRequest with embedded signature (HTTP-POST binding)

Demonstrates how to create a SAML AuthNRequest with embedded signature (HTTP-POST binding).

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    -- This example will sign the following SAML AuthNRequest:

    -- <samlp:AuthnRequest 
    --      xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
    --      xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"
    --      ID="pfx41d8ef22-e612-8c50-9960-1b16f15741b3"
    --      Version="2.0" ProviderName="SP test" IssueInstant="2014-07-16T23:52:45Z"
    --      Destination="http://idp.example.com/SSOService.php"
    --      ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
    --      AssertionConsumerServiceURL="http://sp.example.com/demo1/index.php?acs">
    --   <saml:Issuer>http://sp.example.com/demo1/metadata.php</saml:Issuer>
    --   <samlp:NameIDPolicy Format="urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress" AllowCreate="true"/>
    --   <samlp:RequestedAuthnContext Comparison="exact">
    --     <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef>
    --   </samlp:RequestedAuthnContext>
    -- </samlp:AuthnRequest>

    -- First we build the XML to be signed.
    -- 
    -- Use this online tool to generate the code from sample XML: 
    -- Generate Code to Create XML

    DECLARE @success int
    SELECT @success = 1
    DECLARE @xmlToSign int
    -- Use "Chilkat_9_5_0.Xml" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Xml', @xmlToSign OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @xmlToSign, 'Tag', 'samlp:AuthnRequest'
    EXEC sp_OAMethod @xmlToSign, 'AddAttribute', @success OUT, 'xmlns:samlp', 'urn:oasis:names:tc:SAML:2.0:protocol'
    EXEC sp_OAMethod @xmlToSign, 'AddAttribute', @success OUT, 'xmlns:saml', 'urn:oasis:names:tc:SAML:2.0:assertion'
    EXEC sp_OAMethod @xmlToSign, 'AddAttribute', @success OUT, 'ID', 'pfx41d8ef22-e612-8c50-9960-1b16f15741b3'
    EXEC sp_OAMethod @xmlToSign, 'AddAttribute', @success OUT, 'Version', '2.0'
    EXEC sp_OAMethod @xmlToSign, 'AddAttribute', @success OUT, 'ProviderName', 'SP test'
    EXEC sp_OAMethod @xmlToSign, 'AddAttribute', @success OUT, 'IssueInstant', '2014-07-16T23:52:45Z'
    EXEC sp_OAMethod @xmlToSign, 'AddAttribute', @success OUT, 'Destination', 'http://idp.example.com/SSOService.php'
    EXEC sp_OAMethod @xmlToSign, 'AddAttribute', @success OUT, 'ProtocolBinding', 'urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST'
    EXEC sp_OAMethod @xmlToSign, 'AddAttribute', @success OUT, 'AssertionConsumerServiceURL', 'http://sp.example.com/demo1/index.php?acs'
    EXEC sp_OAMethod @xmlToSign, 'UpdateChildContent', NULL, 'saml:Issuer', 'http://sp.example.com/demo1/metadata.php'
    EXEC sp_OAMethod @xmlToSign, 'UpdateAttrAt', @success OUT, 'samlp:NameIDPolicy', 1, 'Format', 'urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress'
    EXEC sp_OAMethod @xmlToSign, 'UpdateAttrAt', @success OUT, 'samlp:NameIDPolicy', 1, 'AllowCreate', 'true'
    EXEC sp_OAMethod @xmlToSign, 'UpdateAttrAt', @success OUT, 'samlp:RequestedAuthnContext', 1, 'Comparison', 'exact'
    EXEC sp_OAMethod @xmlToSign, 'UpdateChildContent', NULL, 'samlp:RequestedAuthnContext|saml:AuthnContextClassRef', 'urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport'

    -- Also see the online tool to generate the code from sample already-signed XML: 
    -- Generate XML Signature Creation Code from an Already-Signed XML Sample

    DECLARE @gen int
    -- Use "Chilkat_9_5_0.XmlDSigGen" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.XmlDSigGen', @gen OUT

    EXEC sp_OASetProperty @gen, 'SigLocation', 'samlp:AuthnRequest'
    EXEC sp_OASetProperty @gen, 'SigNamespacePrefix', 'ds'
    EXEC sp_OASetProperty @gen, 'SigNamespaceUri', 'http://www.w3.org/2000/09/xmldsig#'
    EXEC sp_OASetProperty @gen, 'SignedInfoCanonAlg', 'EXCL_C14N'
    EXEC sp_OASetProperty @gen, 'SignedInfoDigestMethod', 'sha1'

    -- -------- Reference 1 --------
    EXEC sp_OAMethod @gen, 'AddSameDocRef', @success OUT, 'pfx41d8ef22-e612-8c50-9960-1b16f15741b3', 'sha1', 'EXCL_C14N', '', ''

    -- Provide a certificate + private key. (PFX password is test123)
    DECLARE @cert int
    -- Use "Chilkat_9_5_0.Cert" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Cert', @cert OUT

    EXEC sp_OAMethod @cert, 'LoadPfxFile', @success OUT, 'qa_data/pfx/cert_test123.pfx', 'test123'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @cert, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @xmlToSign
        EXEC @hr = sp_OADestroy @gen
        EXEC @hr = sp_OADestroy @cert
        RETURN
      END
    EXEC sp_OAMethod @gen, 'SetX509Cert', @success OUT, @cert, 1

    EXEC sp_OASetProperty @gen, 'KeyInfoType', 'X509Data'
    EXEC sp_OASetProperty @gen, 'X509Type', 'Certificate'

    -- Load XML to be signed...
    DECLARE @sbXml int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbXml OUT

    EXEC sp_OAMethod @xmlToSign, 'GetXmlSb', @success OUT, @sbXml

    EXEC sp_OASetProperty @gen, 'Behaviors', 'IndentedSignature,ForceAddEnvelopedSignatureTransform'

    -- Sign the XML...
    EXEC sp_OAMethod @gen, 'CreateXmlDSigSb', @success OUT, @sbXml
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @gen, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @xmlToSign
        EXEC @hr = sp_OADestroy @gen
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @sbXml
        RETURN
      END

    -- Save the signed XMl to a file.
    EXEC sp_OAMethod @sbXml, 'WriteFile', @success OUT, 'qa_output/signedXml.xml', 'utf-8', 0

    -- A sample of the signed XML is shown below..
    EXEC sp_OAMethod @sbXml, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    -- ----------------------------------------
    -- Verify the signature we just produced...
    DECLARE @verifier int
    -- Use "Chilkat_9_5_0.XmlDSig" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.XmlDSig', @verifier OUT

    EXEC sp_OAMethod @verifier, 'LoadSignatureSb', @success OUT, @sbXml
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @verifier, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @xmlToSign
        EXEC @hr = sp_OADestroy @gen
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @sbXml
        EXEC @hr = sp_OADestroy @verifier
        RETURN
      END

    DECLARE @verified int
    EXEC sp_OAMethod @verifier, 'VerifySignature', @verified OUT, 1
    IF @verified <> 1
      BEGIN
        EXEC sp_OAGetProperty @verifier, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @xmlToSign
        EXEC @hr = sp_OADestroy @gen
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @sbXml
        EXEC @hr = sp_OADestroy @verifier
        RETURN
      END

    PRINT 'This signature was successfully verified.'

    -- -----------------------------------------
    -- Sample output of AuthNRequest signed XML:
    -- (Line-breaks and some indenting added for readability..)

    -- <?xml version="1.0" encoding="utf-8"?>
    -- <samlp:AuthnRequest 
    --   xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" 
    --   xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" 
    --   ID="pfx41d8ef22-e612-8c50-9960-1b16f15741b3" 
    --   Version="2.0" ProviderName="SP test" 
    --   IssueInstant="2014-07-16T23:52:45Z" 
    --   Destination="http://idp.example.com/SSOService.php" 
    --   ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" 
    --   AssertionConsumerServiceURL="http://sp.example.com/demo1/index.php?acs">
    --     <saml:Issuer>http://sp.example.com/demo1/metadata.php</saml:Issuer>
    --     <samlp:NameIDPolicy Format="urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress" AllowCreate="true"/>
    --     <samlp:RequestedAuthnContext Comparison="exact">
    --         <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef>
    --     </samlp:RequestedAuthnContext>
    -- 	<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/2000/09/xmldsig#rsa-sha1"/>
    -- 	    <ds:Reference URI="#pfx41d8ef22-e612-8c50-9960-1b16f15741b3">
    -- 	      <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/2000/09/xmldsig#sha1"/>
    -- 	      <ds:DigestValue>5d+/YNShy4qnvZcvik8fHHg2SWQ=</ds:DigestValue>
    -- 	    </ds:Reference>
    -- 	  </ds:SignedInfo>
    -- 	  <ds:SignatureValue>QS16H5...U5LQ==</ds:SignatureValue>
    -- 	  <ds:KeyInfo>
    -- 	    <ds:X509Data>
    -- 	      <ds:X509Certificate>MIIF...tjlF4=</ds:X509Certificate>
    -- 	    </ds:X509Data>
    -- 	  </ds:KeyInfo>
    -- 	</ds:Signature>
    -- </samlp:AuthnRequest>
    -- 

    EXEC @hr = sp_OADestroy @xmlToSign
    EXEC @hr = sp_OADestroy @gen
    EXEC @hr = sp_OADestroy @cert
    EXEC @hr = sp_OADestroy @sbXml
    EXEC @hr = sp_OADestroy @verifier


END
GO