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Sponge Construction

Definition(s):

  The method originally specified in [Cryptographic sponge functions, version 0.1] for defining a function from the following: 1) an underlying function on bit strings of a fixed length, 2) a padding rule, and 3) a rate. Both the input and the output of the resulting function are bit strings that can be arbitrarily long.
Source(s):
NIST SP 800-185