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Revocable and Traceable Decentralized ABE for P2P Networks.

Dan Gao1, Huanhuan Xu2, Shuqu Qian3

  • 1Department of Information Engineering, Anshun Technical College, Anshun 561000, China.

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Summary
This summary is machine-generated.

This study introduces a new decentralized Ciphertext-Policy Attribute-Based Encryption (CP-ABE) scheme for P2P networks. It addresses efficiency, security, and revocation challenges, enhancing access control.

Keywords:
P2P networksattribute-based encryptionrevocationtraceability

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Area of Science:

  • Computer Science
  • Cybersecurity
  • Cryptography

Background:

  • Ciphertext-Policy Attribute-Based Encryption (CP-ABE) offers fine-grained access control in P2P networks.
  • Existing CP-ABE schemes face challenges in efficiency, functional completeness, decentralized trust, attribute revocation, and traceability.

Purpose of the Study:

  • To propose a decentralized CP-ABE scheme addressing the limitations of current systems.
  • To achieve efficient attribute revocation and user accountability in P2P networks.

Main Methods:

  • Developed a decentralized CP-ABE scheme named R-T-D-ABE.
  • Implemented threshold distributed key generation.
  • Incorporated versioned attribute revocation and identity-key binding verification.

Main Results:

  • The R-T-D-ABE scheme demonstrates efficient decentralized encryption and decryption.
  • Achieved effective attribute revocation and accountability.
  • Ensured resistance against collusion attacks and provided forward/backward security.
  • Satisfied IND-CPA security in the Generic Group Model (GGM).

Conclusions:

  • The proposed R-T-D-ABE scheme offers a functionally complete and efficient access control solution for P2P networks.
  • Successfully balances computational efficiency with functional completeness while enhancing security.