Template Attack of LWE/LWR-Based Schemes with Cyclic Message Rotation

The side-channel security of lattice-based post-quantum cryptography has gained extensive attention since the standardization of post-quantum cryptography. Based on the leakage mechanism in the decapsulation stage of LWE/LWR-based post-quantum cryptography, a message recovery method, with templates...

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Main Authors: Yajing Chang, Yingjian Yan, Chunsheng Zhu, Pengfei Guo
Format: Article
Language:English
Published: MDPI AG 2022-10-01
Series:Entropy
Subjects:
Online Access:https://www.mdpi.com/1099-4300/24/10/1489
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author Yajing Chang
Yingjian Yan
Chunsheng Zhu
Pengfei Guo
author_facet Yajing Chang
Yingjian Yan
Chunsheng Zhu
Pengfei Guo
author_sort Yajing Chang
collection DOAJ
description The side-channel security of lattice-based post-quantum cryptography has gained extensive attention since the standardization of post-quantum cryptography. Based on the leakage mechanism in the decapsulation stage of LWE/LWR-based post-quantum cryptography, a message recovery method, with templates and cyclic message rotation targeting the message decoding operation, was proposed. The templates were constructed for the intermediate state based on the Hamming weight model and cyclic message rotation was used to construct special ciphertexts. Using the power leakage during operation, secret messages in the LWE/LWR-based schemes were recovered. The proposed method was verified on CRYSTAL-Kyber. The experimental results demonstrated that this method could successfully recover the secret messages used in the encapsulation stage, thereby recovering the shared key. Compared with existing methods, the power traces required for templates and attack were both reduced. The success rate was significantly increased under the low SNR, indicating a better performance with lower recovery cost. The message recovery success rate could reach 99.6% with sufficient SNR.
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spelling doaj.art-34dd0f029c474c189c6c89778ab6f57f2023-11-24T00:04:46ZengMDPI AGEntropy1099-43002022-10-012410148910.3390/e24101489Template Attack of LWE/LWR-Based Schemes with Cyclic Message RotationYajing Chang0Yingjian Yan1Chunsheng Zhu2Pengfei Guo3College of Cryptography Engineering, Information Engineering University, Zhengzhou 450001, ChinaCollege of Cryptography Engineering, Information Engineering University, Zhengzhou 450001, ChinaCollege of Cryptography Engineering, Information Engineering University, Zhengzhou 450001, ChinaCollege of Cryptography Engineering, Information Engineering University, Zhengzhou 450001, ChinaThe side-channel security of lattice-based post-quantum cryptography has gained extensive attention since the standardization of post-quantum cryptography. Based on the leakage mechanism in the decapsulation stage of LWE/LWR-based post-quantum cryptography, a message recovery method, with templates and cyclic message rotation targeting the message decoding operation, was proposed. The templates were constructed for the intermediate state based on the Hamming weight model and cyclic message rotation was used to construct special ciphertexts. Using the power leakage during operation, secret messages in the LWE/LWR-based schemes were recovered. The proposed method was verified on CRYSTAL-Kyber. The experimental results demonstrated that this method could successfully recover the secret messages used in the encapsulation stage, thereby recovering the shared key. Compared with existing methods, the power traces required for templates and attack were both reduced. The success rate was significantly increased under the low SNR, indicating a better performance with lower recovery cost. The message recovery success rate could reach 99.6% with sufficient SNR.https://www.mdpi.com/1099-4300/24/10/1489lattice-based post-quantum cryptographyside-channel attackdecapsulationtemplatecyclic message rotationhamming weight
spellingShingle Yajing Chang
Yingjian Yan
Chunsheng Zhu
Pengfei Guo
Template Attack of LWE/LWR-Based Schemes with Cyclic Message Rotation
Entropy
lattice-based post-quantum cryptography
side-channel attack
decapsulation
template
cyclic message rotation
hamming weight
title Template Attack of LWE/LWR-Based Schemes with Cyclic Message Rotation
title_full Template Attack of LWE/LWR-Based Schemes with Cyclic Message Rotation
title_fullStr Template Attack of LWE/LWR-Based Schemes with Cyclic Message Rotation
title_full_unstemmed Template Attack of LWE/LWR-Based Schemes with Cyclic Message Rotation
title_short Template Attack of LWE/LWR-Based Schemes with Cyclic Message Rotation
title_sort template attack of lwe lwr based schemes with cyclic message rotation
topic lattice-based post-quantum cryptography
side-channel attack
decapsulation
template
cyclic message rotation
hamming weight
url https://www.mdpi.com/1099-4300/24/10/1489
work_keys_str_mv AT yajingchang templateattackoflwelwrbasedschemeswithcyclicmessagerotation
AT yingjianyan templateattackoflwelwrbasedschemeswithcyclicmessagerotation
AT chunshengzhu templateattackoflwelwrbasedschemeswithcyclicmessagerotation
AT pengfeiguo templateattackoflwelwrbasedschemeswithcyclicmessagerotation