The Star Product of Uniformly Random Codes

Fuente: arXiv
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Auteurs principaux: Dinesen, Johan V., Freij-Hollanti, Ragnar, Hollanti, Camilla, Jany, Benjamin, Ravagnani, Alberto
Format: Preprint
Publié: 2025
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author Dinesen, Johan V.
Freij-Hollanti, Ragnar
Hollanti, Camilla
Jany, Benjamin
Ravagnani, Alberto
author_facet Dinesen, Johan V.
Freij-Hollanti, Ragnar
Hollanti, Camilla
Jany, Benjamin
Ravagnani, Alberto
contents We consider the problem of determining the expected dimension of the star product of two uniformly random linear codes that are not necessarily of the same dimension. We achieve this by establishing a correspondence between the star product and the evaluation of bilinear forms, which we use to provide a lower bound on the expected star product dimension. We show that asymptotically in both the field size q and the dimensions of the two codes, the expected dimension reaches its maximum. Lastly, we discuss some implications related to private information retrieval, secure distributed matrix multiplication, quantum error correction, and the potential for exploiting the results in cryptanalysis.
format Preprint
id arxiv_https___arxiv_org_abs_2511_17236
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle The Star Product of Uniformly Random Codes
Dinesen, Johan V.
Freij-Hollanti, Ragnar
Hollanti, Camilla
Jany, Benjamin
Ravagnani, Alberto
Information Theory
94B05
We consider the problem of determining the expected dimension of the star product of two uniformly random linear codes that are not necessarily of the same dimension. We achieve this by establishing a correspondence between the star product and the evaluation of bilinear forms, which we use to provide a lower bound on the expected star product dimension. We show that asymptotically in both the field size q and the dimensions of the two codes, the expected dimension reaches its maximum. Lastly, we discuss some implications related to private information retrieval, secure distributed matrix multiplication, quantum error correction, and the potential for exploiting the results in cryptanalysis.
title The Star Product of Uniformly Random Codes
topic Information Theory
94B05
url https://arxiv.org/abs/2511.17236