High‑efficient Quantum Co-signature Scheme

Negin Fatahi, Mosayeb Naseri, Li-Hua Gong +1 more

Hao Zhang, Xue-Bi An, Chunhui Zhang +2 more

Mengjiao Yang, Dongmei Ke, Fengyin Li

The methods of network attacks are becoming more and more diverse In high-speed networks, and protecting private data is a key issue for users’ security. Proxy blind signature technology combines proxy and blind signature technology to achieve signature transitivity and message confidentiality. However, current signature schemes will not be secure in quantum environments. Meanwhile, the certificate storage of the existing scheme is relatively complicated. Therefore, to avoid the need for certificates and resist quantum attacks, this paper proposes an anti-quantum identity-based proxy blind signature (ID-Proxy-BS) scheme on lattice. This ID-Proxy-BS scheme improves the efficiency of signature through Gaussian distribution and sampling techniques. Security analysis shows that the scheme satisfies correctness, efficiency, blindness, and unforgeability.

Yongfei Huang, Guangxia Xu, Xiaoling Song

Chanyoung Ko, Youngkyung Lee, Kwangsu Lee +1 more

Jinjing Shi, Danping Xu, Guoxiang Xu +1 more

Quantum communication scheme for blind signature is proposed based on two-particle entangled quantum-trits to create a novel systemetrical quantum cryptosystem. All the messages are encrypted by the private key of the sender Alice during the communication and the authenticity verification of signatures and an arbitrator's batch efficient proxy signature is applied. It demonstrates that a large number of blind signatures can be derived with a high efficiency.