The algorithms contained in BS ISO 20215:2015 are recommended for use on space missions with a requirement for information (e.g., data, voice, and video) confidentiality, authentication, or authenticated confidentiality. The algorithms may be employed on any or all mission communications links such as the forward space link (e.g., telecommand), the return space link (e.g., telemetry, science data), as well as across the ground data network. They could as well be used to ensure confidentiality and authenticity of stored data.

A symmetric algorithm assumes that all communicating entities possess a shared secret (i.e., a 'key') which enables them to encrypt, decrypt, and authenticate information shared among them. The manner in which the shared secret is distributed and managed (key management) is not within the scope of this document. Further information on key management can be found in Space Missions Key Management Concept (reference [B22]).


Cross References:
NIST 197:2001
NIST 800-38A:2001
RFC 3686:2004
NIST 800-38D:2007
RFC 4106:2005
NIST 198-1:2008
NIST 800-107:2009
NIST 186-3:2009
NIST 800-38B:2005
NIST 180-4:2012
ISO/IEC 19772:2009
ISO/IEC 18033-3:2010
CCSDS 350.0-G-2:2006
RFC 4346:2006
RFC 4301:2005
RFC 4303:2005
RFC 2404:1998
CCSDS 350.5-G-0
RFC 3602:2003
CCSDS 350.2-G-1:2008
PKCS 1:2002
PKCS 3:1993
RFC 2560:1999
CCSDS 351.0-M-0:2012
CCSDS 350.1-G:2006
RFC 2104:1997
RFC 4634:2011
CCSDS 350.8-G-0
CCSDS 350.6-G-1:2011
CCSDS 355 .0-R-2:2012


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