Novel qubit block encryption algorithm with hybrid keys |
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| Authors: | Nanrun Zhou Ye Liu Guihua Zeng Jin Xiong Fuchen Zhu |
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| Institution: | 1. Department of Electronics Information Engineering, Nanchang University, Nanchang 330031, PR China;2. The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems, Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China;3. National Laboratory for Modern Communications, Chengdu 610041, PR China |
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| Abstract: | 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. |
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| Keywords: | Block encryption algorithm Qubit Hybrid keys Key management Quantum cryptography |
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