International Journal of Computer Networks and Communications Security (IJCNCS)
Advance in quantum computation is always considered as threat to the classical encryption systems. The most comprehensive summary in the field of quantum computation is given. In this paper, an improvement of quantum encryption algorithm based on superposition state is proposed. The whole process including the encryption algorithm where the superposition state and bit-swapping are introduced, makes the quantum cipher text space to expand broadly and allows the transmission of the necessary information and the decryption that is illustrated here. Finally, a short security analysis is given to show the difference between the proposed algorithm and its classical counterpart.