An improved LEA block encryption algorithm to prevent side-channel attack in the IoT system

Devices of IoT (Internet of Things) are limited in resources such as CPU, memory etc. The LEA (Lightweight Encryption Algorithm) was standardized as the encryption algorithm suitable for IoT devices in Korea in 2013. However, LEA is vulnerable to the side-channel analysis attack using consumed elect...

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Published in2016 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA) pp. 1 - 4
Main Authors Choi, Jaehak, Kim, Youngseop
Format Conference Proceeding
LanguageEnglish
Published Asia Pacific Signal and Information Processing Association 01.12.2016
Subjects
Arithmetic
Ciphers
Cryptography
Encryption
Hardware
Indexes
Internet of Things
Power demand
Side-channel attacks
Online AccessGet full text
DOI10.1109/APSIPA.2016.7820845

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Abstract Devices of IoT (Internet of Things) are limited in resources such as CPU, memory etc. The LEA (Lightweight Encryption Algorithm) was standardized as the encryption algorithm suitable for IoT devices in Korea in 2013. However, LEA is vulnerable to the side-channel analysis attack using consumed electric power. To supplement this vulnerability, masking technique is mainly used. However, in case of masking process, the implementation time is increased, losing the characteristics of speedup and lightening. This paper proposes a new and faster LEA algorithm as a countermeasure to the side-channel attack. The proposed algorithm is about 17 times faster than existing algorithms with the masking process to prevent differential side-channel attack.
AbstractList Devices of IoT (Internet of Things) are limited in resources such as CPU, memory etc. The LEA (Lightweight Encryption Algorithm) was standardized as the encryption algorithm suitable for IoT devices in Korea in 2013. However, LEA is vulnerable to the side-channel analysis attack using consumed electric power. To supplement this vulnerability, masking technique is mainly used. However, in case of masking process, the implementation time is increased, losing the characteristics of speedup and lightening. This paper proposes a new and faster LEA algorithm as a countermeasure to the side-channel attack. The proposed algorithm is about 17 times faster than existing algorithms with the masking process to prevent differential side-channel attack.
Author Kim, Youngseop
Choi, Jaehak
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  givenname: Youngseop
  surname: Kim
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  email: wangcho@dankook.ac.kr
  organization: Dankook University, Cheonan, Korea
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SubjectTerms Arithmetic
Ciphers
Cryptography
Encryption
Hardware
Indexes
Internet of Things
Power demand
Side-channel attacks
Title An improved LEA block encryption algorithm to prevent side-channel attack in the IoT system
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