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A tamper-resistant timed secure data transmission protocol based on smart contract.

Ke Yuan1,2, Haowen Cao1, Suya Zhang1

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|July 17, 2023
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Summary
This summary is machine-generated.

This study introduces a secure data transmission protocol using smart contracts to overcome single-point failures in timed-release encryption (TRE). The new method enhances security and resists various attacks with minimal cost.

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Area of Science:

  • Cryptography and Distributed Systems
  • Blockchain Technology Applications

Background:

  • Timed-release encryption (TRE) is crucial for time-sensitive data decryption.
  • Existing single-time server TRE models suffer from a single point of failure.

Purpose of the Study:

  • To propose a tamper-resistant timed secure data transmission protocol using smart contracts.
  • To address the limitations of existing TRE models by enhancing security and reliability.

Main Methods:

  • Decomposing ciphertext into fragments to reduce middleman deposit requirements.
  • Utilizing blockchain for hash value submission to ensure data authenticity.
  • Implementing a smart contract-based protocol for secure data transmission.

Main Results:

  • The protocol demonstrates resistance to interruption, release-ahead, and replacement attacks.
  • Security redundancy is achieved through ciphertext decomposition modes.
  • Monetary cost analysis on Ethereum's Rinkeby testnet shows a low and negligible cost.

Conclusions:

  • The proposed smart contract-based protocol offers a robust and secure solution for timed-release encryption.
  • The system provides enhanced security and overcomes single-point failure issues effectively.
  • The protocol is practical for real-world applications due to its low operational cost.