What's a smooth function in cryptography?

Ramón Santana Fernández @Ramon-Santana-Fernandez

19 May 2014 1 5K Report

I'm working with cancelable templates in biometric cryptography and I need to know what a locally smooth function and globally non smooth function are.

James F. Peters

A good overview of smooth functions and cryptography is given in

I.E. Shparlinski, Anatomy of integers and cryptography (starting on page 5):

http://www.di.ens.fr/pub/Main/CryptoSeminaire/AnatInt_Shparlinski.pdf

Another good paper to consider is

Y. Lamzouri, Smooth values of the iterates of the Euler's Phi-function:

http://www.math.yorku.ca/~lamzouri/smooth.pdf

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