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A novel chaos-based approach for constructing lightweight S-Boxes.

Sohila H Tolpa1, Mohamed A Abdelhamed1, El-Sayed Soliman A Said2

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This study introduces novel 4x4 Substitution-Boxes (S-Boxes) using chaotic maps for lightweight cryptography (LWC). These S-Boxes offer superior security and efficiency for resource-constrained Internet of Things (IoT) devices.

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Area of Science:

  • Cryptography
  • Information Security
  • Applied Mathematics

Background:

  • Conventional cryptography struggles on resource-limited Internet of Things (IoT) devices.
  • Light-Weight Cryptography (LWC) is essential for securing IoT applications.
  • Substitution-Boxes (S-Boxes) are critical for cryptographic nonlinearity.

Purpose of the Study:

  • To develop novel 4x4 S-Boxes specifically designed for LWC.
  • To enhance cryptographic properties for improved security on IoT devices.
  • To evaluate the performance and efficiency of the proposed S-Boxes.

Main Methods:

  • Utilized chaotic maps, including enhanced sine, logistic, and tent maps, for S-Box construction.
  • Optimized multiple parameters based on a defined security threshold.
  • Evaluated S-Boxes against Strict Avalanche Criterion (SAC) and Bit Independence Criterion (BIC).

Main Results:

  • Generated 4x4 S-Boxes demonstrated optimal performance in SAC and BIC.
  • Achieved enhanced resistance to Side Channel Attacks (SCA).
  • Showcased effectiveness in image encryption and assessed hardware efficiency (Gate Equivalent).

Conclusions:

  • The proposed chaotic map-based S-Boxes are highly secure and efficient for LWC.
  • These S-Boxes can replace existing ones or form the basis for new lightweight block ciphers.
  • The study contributes to securing the growing landscape of IoT devices.