Cannot find private match with certificate cka id / cka label

[kifle...@gmail.com]

Hi guys, 

Im working on signing using private key in usb token which have multilple certificate inside it. So i need to get private key which match with the valid certificate...

List<ObjectAttribute> privateKeyAttributes = new List<ObjectAttribute>();

privateKeyAttributes.Add(new ObjectAttribute(CKA.CKA_CLASS, CKO.CKO_PRIVATE_KEY));

privateKeyAttributes.Add(new ObjectAttribute(CKA.CKA_KEY_TYPE, CKK.CKK_RSA));

List<ObjectHandle> foundPrivateKeys = session.FindAllObjects(privateKeyAttributes);

Console.WriteLine("Total private Key found : " + foundPrivateKeys.Count); // total = 2

Then to match current valid certificate... id add cka id for attribute

List<ObjectAttribute> privateKeyAttributes = new List<ObjectAttribute>();

privateKeyAttributes.Add(new ObjectAttribute(CKA.CKA_CLASS, CKO.CKO_PRIVATE_KEY));

privateKeyAttributes.Add(new ObjectAttribute(CKA.CKA_KEY_TYPE, CKK.CKK_RSA));

privateKeyAttributes.Add(new ObjectAttribute(CKA.CKA_ID, "11e333453512212")); // add this CKA_ID or CKA_LABEL

List<ObjectHandle> foundPrivateKeys = session.FindAllObjects(privateKeyAttributes);

Console.WriteLine("Total private Key found : " + foundPrivateKeys.Count); // total = 0

but when i count the private key , its get 0 ...already use cka or cka label.. but still dont get the private key match..

Please help if someone has experience this before .. Thank you