Encryption (SCIP 23x)
The security used by the multinational and national modes of SCIP is defined by the SCIP 23x family of documents. SCIP 231 defines AES based cryptography which can be used multinationally. SCIP 232 defines an alternate multinational cryptographic solution. Several nations have defined, or are defining, their own national security modes for SCIP.
Read more about this topic: Secure Communications Interoperability Protocol