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Highly Efficient Parallel Row-Layered Min-Sum MDPC Decoder for McEliece Cryptosystem by Cai, Jiaxuan; Zhang, Xinmiao is a scholarly article available to read on EtoBox.

What is Highly Efficient Parallel Row-Layered Min-Sum MDPC Decoder for McEliece Cryptosystem about?

The medium-density parity-check (MDPC) code-based McEliece cryptosystem remains a finalist of the post-quantum cryptography standard. The Min-sum decoding algorithm achieves better performance-complexity tradeoff than other algorithms for MDPC codes. However, the prior Min-sum MDPC decoder requires large memories, whose complexity dominates the overall complexity. Besides, its actual achievable parallelism is limited. This paper has four contributions: For the first time, the row-layered scheduling scheme is exploited to substantially reduce the memory requirement of MDPC decoders; A low-complexity scheme is developed to mitigate the performance loss caused by finite precision representation of the messages and high column weights of MDPC codes in row-layered decoding; Constraints are added to the parity check matrix construction to enable effective parallel processing with negligible impacts on the decoder performance and resilience towards attacks; A novel parity check matrix division scheme for highly efficient parallel processing is proposed and the corresponding parallel row-layered decoder architecture is designed. The number of clock cycles for each decoding iteration is red

Author

Cai, Jiaxuan; Zhang, Xinmiao

Published

2024

Language

EN