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  Consists of the information passed down from the previous layer.
NIST SP 800-113

  The input data to the CCM generation-encryption process that is both authenticated and encrypted.
NIST SP 800-38C

  Elements of the spacecraft that provide (commercial, scientific, or other) services to end-users.
NIST IR 8401 from NASA/TP-20210021263 - adapted
NIST IR 8441 from NASA/TP-20210021263 - Adapted

  Mission-specific items of the overall satellite that are not part of the overall operations or “flying” of the satellite.
NIST IR 8270