A5064122473- Blockchain Technology Applications and Security
- Cryptography and Data Security
- Cloud Data Security Solutions
- Advanced Steganography and Watermarking Techniques
- Privacy-Preserving Technologies in Data
- User Authentication and Security Systems
- Security and Verification in Computing
Purdue University West Lafayette
2024
Shanghai Jiao Tong University
2018-2022
The immutability of blockchain is crucial to the security many applications, while it still desired or even legally obliged allow for redacting contents some scenarios. In this work, we revisit conflict between and redaction blockchain, put forward a new fine-grained redactable with semi-trusted regulator, who follows our protocol but has tendency abuse his power. To best knowledge, first that not only supports supervision content, also allows users themselves manage their own data. end,...
In the realm of privacy-preserving blockchain applications such as Zcash, oblivious message retrieval (OMR) enables recipients to privately access messages directed them on nodes (or bulletin board servers). OMR prevents servers from linking a and its corresponding recipient's address, thereby safeguarding recipient privacy. Several schemes have emerged recently meet demands these privacy-centric blockchains; however, we observe that existing solutions exhibit shortcomings in various...
Ring confidential transaction (RingCT) protocol is widely used in cryptocurrency to protect the privacy of both users' identities and amounts. Most recently, a new RingCT (called 2.0) was proposed by leveraging cryptographic accumulators, which can achieve constant-size output theoretically but still far from being practical due heavy zero-knowledge associated with accumulator. In this article, we revisit design ring put forward more efficient privacy-preserving payment protocol, built upon...
We design a protocol based on blockchain, which produces unpredictable, unbiased and publicly verifiable randomness. use the properties of blockchain to enlarge scale participation output public randomness without trusted third party. And we restructure timed commitment make commitments can be verified, ensure that no one control or bias value it verified quickly. Everyone who just need check content recorded in quickly verify produced by our is computationally indistinguishable from uniform...