Paper 2024/1054

Optimized Computation of the Jacobi Symbol

Jonas Lindstrøm, Mysten Labs
Kostas Kryptos Chalkias, Mysten Labs
Abstract

The Jacobi Symbol is an essential primitive in cryptographic applications such as primality testing, integer factorization, and various encryption schemes. By exploring the interdependencies among modular reductions within the algorithmic loop, we have developed a refined method that significantly enhances computational efficiency. Our optimized algorithm, implemented in the Rust language, achieves a performance increase of 72% over conventional textbook methods and is twice as fast as the previously fastest known Rust implementation. This work not only provides a detailed analysis of the optimizations but also includes comprehensive benchmark comparisons to illustrate the practical advantages of our methods. Our algorithm is publicly available under an open-source license, promoting further research on foundational cryptographic optimizations.

Metadata
Available format(s)
PDF
Category
Implementation
Publication info
Preprint.
Keywords
jacobi symboloptimizationcryptographyprimality testingRust
Contact author(s)
jonas @ mystenlabs com
kostas @ mystenlabs com
History
2024-06-30: approved
2024-06-28: received
See all versions
Short URL
https://ia.cr/2024/1054
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2024/1054,
      author = {Jonas Lindstrøm and Kostas Kryptos Chalkias},
      title = {Optimized Computation of the Jacobi Symbol},
      howpublished = {Cryptology {ePrint} Archive, Paper 2024/1054},
      year = {2024},
      url = {https://eprint.iacr.org/2024/1054}
}
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