Authentication 1
Authentication 1 : (a) (Information Management) A method or process to ensure a communication from one source to another is authentic. (b) (Nonproliferation and National Security) Security measure designed to establish the validityof a transmission, message, station or originator, or a means of verifying an individual's eligibility to receive specific categories of classified or controlled information; or Certification that a document contains Top Secret Information (Document Accountability)