[This feature was implemented for MSXML 5.0 for Microsoft Office Applications. XML digital signatures are not supported in MXSML 6.0 and later.]
This read/write property makes a certificate store available for use in an XML application. The certificate store is a CAPICOM 2.0 object of the
Visual Basic syntax
var objCertStore = objXMLDigitalSignature.store; objXMLDigitalSignature.store = objCertStore; Set objCertStore = objXMLDigitalSignature.store Set objXMLDigitalSignature.store = objCertStore
C/C++ Syntax Using Smart Pointers
IUnknownPtr objCertStore = objXMLDigitalSignature.store; objXMLDigitalSignature.store = objCertStore;
HRESULT get_store (IUnknown** objCertStore); HRESULT putref_store (IUnknown* objCertStore);
A certificate store object created as a CAPICOM 2.0 object of the
Getting or setting the store object succeeded.
Getting or setting the store object failed. The
objCertStore parameter returns NULL.
You can only set the store property if the
CERTIFICATES flag has been passed via the
fWriteKeyInfo parameter during the
sign method call. If this flag has been passed, and the
signature property has been set, an application can then set the
store property to specify the certificate store to use. From this store, certificates are retrieved and written to the
<ds:KeyInfo> element in the signed signature.
You might want your application to verify the authenticity of the certificate used to sign or verify. To do this, you can use the
store property to obtain the certificate store, enumerate the certificates there, and build a certificate chain to see if the certificate used can be trusted.
To create the CAPICOM 2.0
Store object, use the following ProgID:
"CAPICOM 2.0 Store"
For more information, see the following example.
This example illustrates the effect of setting the
store property on an
IXMLDigitalSignature object. When a signature is signed without setting this property and the CERTIFICATES flag is set in the call to the
sign method, the resultant signature document contains the certificate of the key used in
sign. However, when the signature is signed after this property is set to the certificate store, the resultant signature document contains all the certificates in the store, in addition to the certificate of the key used in
In this example, the certificate store has three certificates. So the signed signature document contains four
<ds:Certificate> entries, two of which are identical.
The example uses a resource file, signature_template.store.rsa.xml. We've provided source files for the sample in three languages: JScript, Visual Basic, and C++. The output is the same from each language.
MSXML 5.0 for Microsoft Office Applications and later