Abstract
Recently, cyber-physical system is widely used for smart system control in various fields. Various functions of the cyber-physical system must overcome the limited hardware resources constraint of an embedded system. In addition, the data required from the industrial cyber-physical system are critical; therefore, a highly secure encryption technique is required. However, security and computational throughput are incompatible with each other in the cryptographic technique; therefore, the industrial cyber-physical system needs to adopt a highly efficient and secure encryption technique considering the limited available resources. This study applies the m-folding method to the highly secure elliptic curve algorithm to improve efficiency and proposes the cryptosystem optimized for the resource-constrained industrial cyber-physical system. The proposed m-folding method–based elliptic curve encryption showed 50% faster encryption than the existing methods.
Highlights
Cyber-physical system[1,2,3,4,5,6,7] that has a wide range of application in industries such as factory, farm, veterinary, transportation, aviation, health care, and chemistry plays an important role in constructing an interaction system between cyber and physical elements
This study proposes the m-folding method–based elliptic curve cryptosystem for the industrial cyberphysical system
Elliptic curve cryptography is gaining popularity in the field of cyber-physical system security due to its public key scheme and smaller key size compared to existing asymmetric key-based cryptosystem
Summary
Cyber-physical system[1,2,3,4,5,6,7] that has a wide range of application in industries such as factory, farm, veterinary, transportation, aviation, health care, and chemistry plays an important role in constructing an interaction system between cyber and physical elements. It is not applicable for the cyber-physical system because a large number of devices need to communicate in order to share the same encryption/decryption key Public key systems such as RSA and elliptic curve cryptosystem were designed to overcome the aforementioned limitations. When the key length of the public key system increases, the number of computations and memory usage increases with the increased size of the encryption data Existing cryptosystems such as RSA11 and homomorphic encryption[12] are difficult to deploy in the cyber-physical system environment. Elliptic curve cryptography is gaining popularity in the field of cyber-physical system security due to its public key scheme and smaller key size compared to existing asymmetric key-based cryptosystem. None of these applications considered improving the encryption and decryption scheme for elliptic curve cryptography deployed in the cyber-physical system environment
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