Yes Finance Review

NuLink Network offers a decentralized approach for developers of web3 privacy-preserving applications to integrate top-tier security and privacy measures. The NuLink platform includes endpoint encryption and cryptographic access control. It enables the secure sharing of sensitive user data from any user platform to cloud or decentralized storage, with access automatically granted based on policy through Proxy Re-Encryption or Attribute-Based Encryption. To ensure the authenticity of data sources, users can employ Zero-Knowledge Proofs. Moreover, for sophisticated privacy-preserving scenarios, NuLink leverages Fully Homomorphic Encryption (FHE) to deliver tailored enterprise-level data computation services.

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NuLink is constructing a robust technological foundation by incorporating leading-edge technologies, organizing its offerings into three primary categories:

Data Availability: NuLink employs advanced cryptographic techniques like Zero Knowledge Proof to ensure data availability in ciphertext form.

Privacy-Preserving Data Sharing: The platform facilitates encrypted data sharing, allowing owners to control access. Technologies encompass decentralized encrypted storage, proxy re-encryption, identity-based encryption, and attribute-based encryption.

Privacy-Preserving Data Computing: NuLink integrates privacy computing capabilities into smart contracts, leveraging technologies such as multi-party secure computing and homomorphic encryption.

These three categories of technical solutions empower NuLink to deliver privacy-preserving applications across diverse domains, including Decentralized Finance (DeFi), healthcare, web3 social networks (SocialFi), Digital Rights Management, and more.

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Zero-Knowledge Proof (ZKP) is a concept wherein the prover convinces the verifier of a certain conclusion's correctness without revealing any pertinent information. Initially proposed by S. Goldwasser et al. in 1989, ZKP is characterized by three fundamental properties:

Completeness: When both the prover and verifier act honestly and adhere to every step of the proof process, the verification is successful, and the verifier accepts the prover.

Soundness: It is impossible for anyone to fabricate a new proof and pass it through verification successfully.

Zero Knowledge: Following verification, the verifier confirms the prover possesses the requisite knowledge without gaining any insight into that knowledge. From the prover's perspective, privacy remains uncompromised.

Zero-Knowledge Proof (ZKP) can be classified based on participant interaction: Interactive Zero-Knowledge Proof and Non-Interactive Zero-Knowledge Proof (NIZK). NIZK is particularly suited for decentralized scenarios. Commonly used NIZK schemes include zk-SNARK, zk-STARK, Bulletproofs, PLONK, Supersonic, Malin, among others. Each scheme offers distinct advantages, and selection depends on the specific context.

ZKP enhances security and privacy for NuLink network users by furnishing publicly verifiable proof, ensuring users can easily validate the correctness of their data storage and processing within the network.

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Identity-Based Encryption (IBE) and Attribute-Based Encryption (ABE) are both cryptographic schemes used for controlling access rights, operating within the realm of public key encryption. IBE enables specification of the recipient's identity information, while ABE allows specification of the receiver's attributes. NuLink leverages these technologies to facilitate more versatile data sharing.

However, traditional public key encryption has inherent shortcomings and risks. For instance, the public key typically comprises random numbers, making it challenging to ensure correct encryption and decryption. Misuse of the public key can lead to ciphertext decryption failures or disclosure to unintended recipients, including malicious actors. One common attack involves malicious users deceiving senders by substituting the receiver's public key.

IBE addresses this issue by directly binding the user's identity information to the public key, akin to an ideal email system where knowing someone's identity enables secure communication and authentication of their signature.