Re:Help with verifying the signature of enveloped -message using x509 certificates.

Re:Help with verifying the signature of enveloped -message using x509 

Hey Friends,
I have an xml given by our partner trying to integrating with us and i have 
their certificate with public key installed in both personal and trusted 
people folders.
when i am using the following code to check the signature of message signed 
by my certificate i am able to verify the signature but when i am trying to 
check the signature of the message of our partner using the same following 
code i am not able to verify the message. the message sent by our partner is 
right below the code.I would even be intrested in giving the public 
certificate of the partner if anyone intrested in helping me out in finding 
the bug.
I would be thankful if someone can reply to me what am i missing here.
XmlDocument aobDocument = new XmlDocument();

aobDocument.PreserveWhitespace = true;


X509Certificate2 FoundCert = RetrieveCertificate();//This method gets me the 
certificate of the partner we are integrating with i have checked the method 
and retrieves the proper certificate from the certificate store.

SignedXML SignedXML = new 

XmlNode dsig = aobDocument.GetElementsByTagName("Signature",



if (SignedXML.CheckSignature(FoundCert, false))   //FoundCert is the 
certificate of the partner thatz being retirieved from the store.


// Signature verified.

return true;




//Signature verification failed.

return false;


  <?xml version="1.0" encoding="UTF-8" ?>
- <B:Envelope xmlns:B="" 
- <SOAP:Header 
- <SOAP-SEC:Signature SOAP:mustUnderstand="1">
- <Signature xmlns="" 
- <SignedInfo>
Algorithm="" />
  <SignatureMethod Algorithm="" />
- <Reference URI="#Body">
- <Transforms>
  <Transform Algorithm="" />
  <DigestMethod Algorithm="" />
- <KeyInfo>
- <X509Data>
  <X509Certificate />
- <X509IssuerSerial>
  <X509IssuerName> Ref. LIABILITY LTD.(c)97 
VeriSign, OU=VeriSign International Server CA - Class 3, OU="VeriSign, 
Inc.", O=VeriSign Trust Network</X509IssuerName>
- <B:Body id="Body" 
- <A:Diagnostic>
- <A:DiagnosticMessage>

param (22)
12/2/2006 4:05:22 AM
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