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- W4377121451 abstract "The hard mathematical problems that assure the security of our current public-key cryptography (RSA, ECC) are broken if and when a quantum computer appears rendering them ineffective for use in the quantum era. Lattice based cryptography is a novel approach to public key cryptography, of which the mathematical investigation (so far) resists attacks from quantum computers. By choosing a module learning with errors (MLWE) algorithm as the next standard, National Institute of Standard & Technology (NIST) follows this approach. The multiplication of polynomials is the central bottleneck in the computation of lattice based cryptography. Because public key cryptography is mostly used to establish common secret keys, focus is on compact area, power and energy budget and to a lesser extent on throughput or latency. While most other work focuses on optimizing number theoretic transform (NTT) based multiplications, in this paper we highly optimize a Toom-Cook based multiplier. We demonstrate that a memory-efficient striding Toom-Cook with lazy interpolation, results in a highly compact, low power implementation, which on top enables a very regular memory access scheme. To demonstrate the efficiency, we integrate this multiplier into a Saber post-quantum accelerator, one of the four NIST finalists. Algorithmic innovation to reduce active memory, timely clock gating and shift-add multiplier has helped to achieve 38% less power than state-of-the art PQC core, 4x less memory, 36.8% reduction in multiplier energy and 118x reduction in active power with respect to state-of-the-art Saber accelerator (not silicon verified). This accelerator consumes 0.158mm2 active area which is lowest reported till date despite process disadvantages of the state-of-the-art designs." @default.
- W4377121451 created "2023-05-20" @default.
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- W4377121451 date "2023-05-17" @default.
- W4377121451 modified "2023-10-16" @default.
- W4377121451 title "A 334$mu$W 0.158mm$^2$ ASIC for Post-Quantum Key-Encapsulation Mechanism Saber with Low-latency Striding Toom-Cook Multiplication Authors Version" @default.
- W4377121451 doi "https://doi.org/10.48550/arxiv.2305.10368" @default.
- W4377121451 hasPublicationYear "2023" @default.
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