CoARX: A coprocessor for ARX-based cryptographic algorithms

Khawar Shahzad, Ayesha Khalid, Zoltán Endre Rákossy, Goutam Paul, Anupam Chattopadhyay

Research output: Chapter in Book/Report/Conference proceedingConference contribution

18 Citations (Scopus)


Cryptographic coprocessors are inherent part of modern Systemon- Chips. It serves dual purpose - efficient execution of cryptographic kernels and supporting protocols for preventing IP-piracy. Flexibility in such coprocessors is required to provide protection against emerging cryptanalytic schemes and to support different cryptographic functions like encryption and authentication. In this context, a novel crypto-coprocessor, named CoARX, supporting multiple cryptographic algorithms based on Addition (A), Rotation (R) and eXclusive-or (X) operations is proposed. CoARX supports diverse ARX-based cryptographic primitives. We show that compared to dedicated hardware implementations and general-purpose microprocessors, it offers excellent performance-flexibility trade-off including adaptability to resist generic cryptanalysis.

Original languageEnglish
Title of host publicationProceedings of the 50th Annual Design Automation Conference, DAC 2013
Publication statusPublished - 12 Jul 2013
Event50th Annual Design Automation Conference, DAC 2013 - Austin, TX, United States
Duration: 29 May 201307 Jun 2013


Conference50th Annual Design Automation Conference, DAC 2013
Country/TerritoryUnited States
CityAustin, TX


  • ARX
  • CGRA
  • Coprocessor
  • Cryptography

ASJC Scopus subject areas

  • Computer Science Applications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Modelling and Simulation


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