sesa 15(3): e4

Research Article

WG-8: A Lightweight Stream Cipher for Resource-Constrained Smart Devices

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  • @ARTICLE{10.4108/sesa.2.3.e4,
        author={Xinxin Fan and Kalikinkar Mandal and Guang Gong},
        title={WG-8: A Lightweight Stream Cipher for Resource-Constrained Smart Devices},
        journal={EAI Endorsed Transactions on Security and Safety},
        keywords={Lightweight stream cipher, resource-constrained smart device, cryptanalysis, efficient implementation.},
  • Xinxin Fan
    Kalikinkar Mandal
    Guang Gong
    Year: 2015
    WG-8: A Lightweight Stream Cipher for Resource-Constrained Smart Devices
    DOI: 10.4108/sesa.2.3.e4
Xinxin Fan1,*, Kalikinkar Mandal1, Guang Gong1
  • 1: Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, CANADA
*Contact email:


Lightweight cryptographic primitives are essential for securing pervasive embedded devices like RFID tags, smart cards, and wireless sensor nodes. In this paper, we present a lightweight stream cipher WG-8, which is tailored from the well-known Welch-Gong (WG) stream cipher family, for resource-constrained devices. WG-8 inherits the good randomness and cryptographic properties of the WG stream cipher family and is resistant to the most common attacks against stream ciphers. The software implementations of the WG-8 stream cipher on two popular low-power microcontrollers as well as the extensive comparison with other lightweight cryptography implementations highlight that in the context of securing lightweight embedded applications WG-8 has favorable performance and low energy consumption.