Find a unsigned long attribute in the builder that has the type attr_type
, is of the correct unsigned long size, and is not
invalid in the PKCS#11 sense.
If multiple attributes exist for the given attribute type, then the first one is returned.
this |
the builder |
attr_type |
the type of attribute to find |
value |
the location to place the found value |
whether a valid unsigned long attribute was found |