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end cryptographic unit (ECU)

Abbreviation(s) and Synonym(s):

ECU

Definition(s):

  Device that 1) performs cryptographic functions, 2) typically is part of a larger system for which the device provides security services, and 3) from the viewpoint of a supporting security infrastructure (e.g., a key management system) is the lowest level of identifiable component with which a management transaction can be conducted.
Source(s):
CNSSI 4009-2015