Novel qubit block encryption algorithm with hybrid keys

作者：Zhou, Nanrun^*; Liu, Ye; Zeng, Guihua; Xiong, Jin; Zhu, Fuchen

来源：Physica A: Statistical Mechanics and Its Applications , 2007, 375(2): 693-698.

DOI：10.1016/j.physa.2006.09.022

• block encryption algorithm
• qubit
• hybrid keys
• key management
• quantum cryptography

By combining quantum key with classical one, a novel block cryptographic algorithm that can be applied to encrypt qubits is presented. The security of the algorithm is analyzed from several aspects. It is shown that the qubit block encryption algorithm can prevent quantum attacking strategy as well as classical attacking strategy. The hybrid keys are securely reusable after a checking process, which lessens the task of key management significantly. The proposed algorithm offers an alternative to the standard one-time-pad encryption of a quantum bit string using a quantum key.

• 出版日期2007-3-1
• 单位南昌大学; 上海交通大学