Anonymous transaction amount verification system based on zero knowledge range proof

Area of Science:

• Computer Science
• Cryptography
• Blockchain Technology

Background:

• Blockchain data security and privacy are critical challenges.
• Existing solutions often face high computational complexity and verification latency.
• There is a need for efficient and privacy-preserving blockchain verification systems.

Purpose of the Study:

• To present a secure and privacy-preserving system for blockchain data transaction verification.
• To enhance confidentiality of transaction amounts and participant identities.
• To achieve strong anonymity with conditional traceability.

Main Methods:

• Integration of the Paillier cryptosystem.
• Utilization of a zero-knowledge range proof protocol.
• Implementation of fully functional accounting nodes for ciphertext-domain balance updates.

Main Results:

• Ensured confidentiality of transaction amounts and participant identities.
• Achieved strong anonymity and conditional traceability.
• Demonstrated efficient ciphertext-domain balance updates without decryption.
• Experimental evaluation confirmed practicality and high performance.

Conclusions:

• The proposed system effectively addresses blockchain data security and privacy concerns.
• It offers a practical and high-performance solution compared to existing methods.
• The integration of advanced cryptographic techniques enhances user privacy and system efficiency.