Multi-party quantum steganography with GHZ private-key

作者：Cao Dong^*; Song Yaoliang

来源：Journal of Information and Computational Science, 2011, 8(13): 2703-2709.

• Entanglement state
• Generation method
• Private-key
• Pseudorandom sequences
• Quantum encryption
• Quantum steganography
• Secret information
• Symmetric cryptography

Quantum steganography is the method of hiding quantum or classical secret information by embedding it in an innocent message. In this paper, we firstly propose a novel quantum encryption scheme which promote quantum symmetric cryptography to multi-party quantum encryption with multi-particle entanglement states, then propose a new subset generation method according to pseudo-random sequence, Randomly selected M qubits constitute a subset from the N covertext qubits, The amount of key consumption is significant reduction in our propose scheme. And then we present a novel multi-party quantum steganography protocol with optimal private-key scheme. Theoretical analysis shows that our protocol has good secrecy and security.

• 出版日期2011
• 单位南京理工大学