There are many information assurance schemes(i.e., evaluation criteria and methodology) for security assurance of information systems, since the security is one of the most important characteristics in the modem information systems. However, there are confusions among schemes and redundancies of assurance. In this paper, we survey and classify conventional information assurance schemes by view points of assurance targets, life-cycles and nations. We propose three new information assurance schemes as the result of survey. Those are as follows: the schemes of the assurance on the requirement itself which is evaluated and certificated after standardizing the security requirements about the organizations and the applications, on the developing information system, and on the accreditation and certification about new information system. This will be helpful to set up a security assurance of National Defense.