3.2.5.2.2.5 SecurityToken

This parameter MUST be a Base64-encoded [RFC4648] security token conforming to [MS-MWBF] section 2.2.4.2. This is the security token that the server would normally issue in the wresult parameter of [MS-MWBF]. The process for generating this value is specified in [MS-MWBF].