"Kenny Ho" <Kenny Ho@discussions.microsoft.com> wrote in message
news:7771F9DD-9D39-4042-9C14-C5E4E62A03BD@microsoft.com...
> Hi,
> I have written the following schema that contains the XML signature:
>
> -----------------------------------------------------------------------
> <?xml version="1.0" encoding="utf-8" ?>
> <xs:schema targetNamespace="http://mycompany/integrity/v1.0"
> elementFormDefault="qualified"
> xmlns="http://mycompany/integrity/v1.0"
> xmlns:ds="http://www.w3.org/2000/09/xmldsig#"
> xmlns:xs="http://www.w3.org/2001/XMLSchema">
> <xs:import namespace="http://www.w3.org/2000/09/xmldsig#"
> schemaLocation="http://www.w3.org/TR/2002/REC-xmldsig-core-20020212/xmldsig-core-schema.xsd"
> />
> <xs:element name="Integrity">
> <xs:complexType>
> <xs:sequence>
> <xs:element name="File" type="xs:string" minOccurs="1"
> maxOccurs="unbounded" />
> <xs:element ref="ds:Signature" minOccurs="0" maxOccurs="1" />
> </xs:sequence>
> </xs:complexType>
> </xs:element>
> </xs:schema>
> -----------------------------------------------------------------------
>
> I want to use the Enveloped Signature, and the xml file is like this:
>
> -----------------------------------------------------------------------
> <?xml version="1.0" encoding="utf-8"?>
> <Integrity xmlns="http://mycompany/integrity/v1.0"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://mycompany/integrity/v1.0">
> <File>room.vsd</File>
> <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/TR/2001/REC-xml-c14n-20010315" />
> <Transform
> Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
> </Transforms>
> <DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
> <DigestValue>pMTBUf9u//G8YAazstaFWQBBLWM=</DigestValue>
> </Reference>
> </SignedInfo>
>
> <SignatureValue>seM4iVh7tx1YN+a1+w0wYI86+27NN/a8kkXdappoM7+ySXUHrCFtrqkNmrh7t19cAZmUc1tGG0DgaPLvCPZ3hTE3qKIVsxOX7juA16WceYBd6j8if+4jpMpJhr0g49KJrINSKo5fk8hDyOf4Cy5KNpROc72Xt4TaECSa8Y4rVTI=</SignatureValue>
> <KeyInfo>
> <KeyValue xmlns="http://www.w3.org/2000/09/xmldsig#">
> <RSAKeyValue>
>
> <Modulus>tkZvN7OWALZazI2UnftRFP+ztxWKq8abaOgt3VEyUWN/4hGow+EA4aYe20yWl/jW8ZPGQm62pda/jwPGyyH4E5DMNUsSmcCZLtJWC3IqzbVmyF9EYGNUVwSDiYYsYLETODa2loMarbEEPnQmTWQCO6zkhwCxcC7aPkvKmkAX5lk=</Modulus>
> <Exponent>AQAB</Exponent>
> </RSAKeyValue>
> </KeyValue>
> </KeyInfo>
> </Signature>
> </Integrity>
> -----------------------------------------------------------------------
>
> However, when I run the xml schema validation, it shows the following
> error:
> -----------------------------------------------------------------------
> System.Exception: The 'URI' attribute has an invalid value according to
> its
> data
> type. An error occurred at , (8, 18).
> -----------------------------------------------------------------------
>
> The error location location is <Reference URI="">, in xml signature's
> part. It seems that the URI can't accept empty string.
> In fact, the xml data file is correct, but fails in schema validation.
> Does anybody know what the problem is? Is it a .Net's bug? Any way to
> solve
> this problem? Thanks so much!
>
> (I am using .NET 1.1; winXP sp2)
>
>
> Kenny Ho
>