Re: Verify Signed XML document in compact framework

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From: Robbe Morris [C# MVP] (info_at_turnkeytools.com)
Date: 02/17/05 

Date: Wed, 16 Feb 2005 19:52:45 -0500

Actually, it isn't included in the current release of the .NET CF SP2.

Sorry... 

-- 
2005 Microsoft MVP C#
Robbe Morris
http://www.robbemorris.com
http://www.mastervb.net/home/ng/forumvbcode/post10017013.aspx
http://www.eggheadcafe.com/articles/adonet_source_code_generator.asp
"dani" <dani@writeme.com> wrote in message 
news:762a3382.0502161326.204c61e2@posting.google.com...
>I want to convert following VB.Net code to cf Code:
>
> Is there any way to do this? Please help me. Do not say only
> System.Security.Cryptography.Xml is not included in cf..
>
> Here is the working code in vb.Net:
> (the public key is included in the xml file)
>
>
>    Public Function VerifyXMLDocument(ByVal sXMLFileName As String, _
>                                      ByVal sXMLPublicKey As String)
> As Boolean
>
>        ' Load the signed XML file.
>        Dim xmldoc As New XmlDocument
>        xmldoc.Load(sXMLFileName)
>
>        ' Create an RSA crypto service provider from the embedded
>        ' XML document resource (the public key).
>        Dim csp As New RSACryptoServiceProvider
>        csp.FromXmlString(sXMLPublicKey)
>
>        ' Create the signed XML object.
>        Dim sxml As New SignedXml(xmldoc)
>
>        ' Verify the signature.
>        If sxml.CheckSignature(csp) Then
>            Return True
>        Else
>            Return False
>        End If
>
>    End Function
>
>
> Here is the signed XML File:
>
> <?xml version="1.0" encoding="utf-16"?>
> <license>
>  <ComputerName>
>  </ComputerName>
>  <ComputerMAC>0030BD61F98A</ComputerMAC>
>  <CompanyName>
>  </CompanyName>
>  <UserName>
>  </UserName>
>  <IsServerLicense>False</IsServerLicense>
>  <MaxUser>0</MaxUser>
>  <Info>License InetConnector Proxy 1.0.1.1</Info>
> 
> <Guid>c51bfefcdfce4260923e98038fe737644967464699484c6bab54b8dcf6841b4d</Guid>
>  <PublicKey>
>    <RSAKeyValue>
> 
> <Modulus>wOP27h39Vi5oL92X9kJH4gHOlvOIQRXJZrM32pzLGlwNMm1+Ewi0o5NWmZFHTjHamRjGUQyLEOaGyBixFL7nFvOf+CwM8l1Psi4l5uCZ9deDxcfoH/w9a7KDxNDJhdd5joTvSFSupHYd+GEEpV68RQDeRy4npzcgQtfQYSXFUOc=</Modulus>
>      <Exponent>AQAB</Exponent>
>    </RSAKeyValue>
>  </PublicKey>
>  <Tool>
>    <ToolName>InetConnector Proxy</ToolName>
>    <DateCreated>20050111</DateCreated>
>    <DateExpire>99991231</DateExpire>
>    <IsTrial>False</IsTrial>
>    <IsLicensed>True</IsLicensed>
>    <SerialNumber>
>    </SerialNumber>
>    <DongleWithMAC>
>    </DongleWithMAC>
>    <Project>
>    </Project>
>    <Segment>
>    </Segment>
>    <ToolInfo>1.0.1.1</ToolInfo>
>  </Tool>
>  <Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
>    <SignedInfo>
>      <CanonicalizationMethod
> Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
>      <SignatureMethod
> Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
>      <Reference URI="">
>        <Transforms>
>          <Transform
> Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
>        </Transforms>
>        <DigestMethod
> Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
>        <DigestValue>4lgI4IIJ4aDWn6dutwvtZcXR1sk=</DigestValue>
>      </Reference>
>    </SignedInfo>
> 
> <SignatureValue>jlraLE6t3iUb5+96pjIRLA3NX/B7l6nMuh7cnObVrdHDnkZcb2DGNQfENeBy6IspvThb1mZtNJK4LwUyU5EE7b3SLiC+0l3Hk7kpCKWSYFth4+ElsSBAROCWPHVWRRQQLpQNmfC4eOZ79gqNXLhQVPE9sssLTwDKuzneqgORYQ8=</SignatureValue>
>  </Signature>
> </license>

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