Encryption Scheme Based on Expanded Reed-Solomon Codes [article]

Karan Khathuria and Joachim Rosenthal and Violetta Weger
<span title="2019-11-26">2019</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
We present a code-based public-key cryptosystem, in which we use Reed-Solomon codes over an extension field as secret codes and disguise it by considering its shortened expanded code over the base field. Considering shortened expanded codes provides a safeguard against distinguisher attacks based on the Schur product. Moreover, without using a cyclic or a quasi-cyclic structure we obtain a key size reduction of nearly 45 % compared to the classic McEliece cryptosystem proposed by Bernstein et al.
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