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  An ordered (re)arrangement of the elements of a (finite) set; a function that is both a one-to-one and onto mapping of a set to itself.
NIST SP 800-133 [Superseded]
NIST SP 800-133 Rev.1 [Superseded]
NIST SP 800-133 Rev. 2

  An invertible function.
NIST SP 800-38B
NIST SP 800-38D