Quantum public key encryption scheme with four states key

Asymmetric encryption has some important applications in the field of communication. In classical computers, most public key encryption schemes are designed based on computational assumption. In other words, they can ensure computational security. When the computing power is large enough, it will pose a threat to these encryption schemes. We propose a quantum public key encryption scheme which based on properties of quantum physics. Our scheme realizes encryption and decryption with few resources and does not rely on any computational assumption. The key in our scheme consists of classical bits and qubits. Where the private key are classical bit and public key are qubits. The public key are generated through private key. We analyze the performance and security of the scheme. Our scheme ensures the information-theoretic secure and can be implemented easily.

Automated summary

Asymmetric encryption has important applications in communication, but traditional public key encryption schemes on classical computers are vulnerable to threats when computational power is large enough. Therefore, we propose a quantum public key encryption scheme based on quantum physics properties, which does not rely on computational assumptions and can achieve encryption and decryption with fewer resources. Our scheme ensures information-theoretic security and is easily implementable.