Paper 2024/1306
Scloud+: a Lightweight LWE-based KEM without Ring/Module Structure
Abstract
We present Scloud+, an LWE-based key encapsulation mechanism (KEM). The key feature of Scloud+ is its use of the unstructured-LWE problem (i.e., without algebraic structures such as rings or modules) and its incorporation of ternary secrets and lattice coding to enhance performance. A notable advantage of the unstructured-LWE problem is its resistance to potential attacks exploiting algebraic structures, making it a conservative choice for constructing high-security schemes. However, a key disadvantage of such schemes is their limited computational and communication efficiency. Scloud+ utilizes ternary secrets and
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Minor revision. SSR 2024
- Keywords
- post-quantum cryptographykey encapsulation mechanismlearning with errorslattice codeBarnes-Wall lattice
- Contact author(s)
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anyuwang @ tsinghua edu cn
zhengzx @ cuc edu cn
zhaochunhuan @ huawei com
qiuzhiyuan @ sdibc cn
zengguang13 @ huawei com
yuanye44 @ huawei com
mchangchun @ pbc gov cn
xiaoyunwang @ tsinghua edu cn - History
- 2024-11-30: revised
- 2024-08-21: received
- See all versions
- Short URL
- https://ia.cr/2024/1306
- License
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CC BY
BibTeX
@misc{cryptoeprint:2024/1306, author = {Anyu Wang and Zhongxiang Zheng and Chunhuan Zhao and Zhiyuan Qiu and Guang Zeng and Ye Yuan and Changchun Mu and Xiaoyun Wang}, title = {Scloud+: a Lightweight {LWE}-based {KEM} without Ring/Module Structure}, howpublished = {Cryptology {ePrint} Archive, Paper 2024/1306}, year = {2024}, url = {https://eprint.iacr.org/2024/1306} }