7 papers
Cryptographic Application of Elliptic Curve with High Rank
Xiaogang Cheng, Ren Guo, Zuxi Chen
Elliptic curve cryptography is better than traditional cryptography based on RSA and discrete logarithm of finite field in terms of efficiency and security. In this paper, we show…
Enhanced Security of Public Key Encryption with Certified Deletion
Xiaogang Cheng, Ren Guo
In classical cryptography, certified deletion is simply impossible. Since classical information can be copied any number of times easily. In quantum cryptography, certified deletio…
Collaboration Encouraging Quantum Secret Sharing Scheme with Seal Property
Xiaogang Cheng, Ren Guo
A new concept of quantum secret sharing is introduced, in which collaboration among participants are encourage. And the dealer can ask the participants to send back their share and…
Research on Data Right Confirmation Mechanism of Federated Learning based on Blockchain
Xiaogang Cheng, Ren Guo
Federated learning can solve the privacy protection problem in distributed data mining and machine learning, and how to protect the ownership, use and income rights of all parties…
Concept and Construction of Group Signature with self-proof capacity for confirming and denying
Xiaogang Cheng, Ren Guo
With privacy-preserving and traceability properties, group signature is a cryptosystem with central role in cryptography. And there are lots of application scenarios. A new extensi…
Better Quantum Seal Schemes based on Trapdoor Claw-Free Functions
Xiaogang Cheng, Ren Guo
Seal in classical information is simply impossible. Since classical information can be easily copied any number of times. Based on quantum information, esp. quantum unclonable theo…
Quantum Advantage of Threshold Changeable Secret Sharing Scheme
Xiaogang Cheng, Ren Guo, Changli Zhou
In TCSS (Threshold Changeable Secret Sharing) scheme, the threshold can be changed to deal with share leakage in the long term. But in classical TCSS, there is no guarantee that ol…