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Decisional second-preimage resistance: When does SPR imply PRE?
cryptographic hash functions preimage resistance second-preimage resistance
2019/5/21
There is a well-known gap between second-preimage resistance and preimage resistance for length-preserving hash functions. This paper introduces a simple concept that fills this gap. One consequence o...
Characterizing Collision and Second-Preimage Resistance in Linicrypt
collision resistance second-preimage resistance
2018/5/22
Linicrypt (Carmer & Rosulek, Crypto 2016) refers to the class of algorithms that make calls to a random oracle and otherwise manipulate values via fixed linear operations. We give a characterization o...
Cryptographic Hash-Function Basics:Definitions, Implications, and Separations for Preimage Resistance, Second-Preimage Resistance,and Collision Resistance
collision resistance cryptographic hash functions preimage resistance
2009/3/23
We consider basic notions of security for cryptographic hash functions: collision resistance,
preimage resistance, and second-preimage resistance. We give seven different definitions that
correspond...