SDN - Secure Data Networks

Standards published by National Security Agency. They are not publically available. They provide some of the security standards used in MMHS.

   
SDN 701 Message Security Protocol (MSP)
SDN.703 MISSI Management Protocol (MMP)
SDN 705 Strong Authentication for X.400, X.500, and X.700
SDN 706 X.509 Certificate and CRL Profiles and Certificate Path Processing Rules for MISSI
SDN 801 Access Control Concepts and Mechanisms