A quantum circuit design of AES [article]

ZeGuo Wang, ShiJie Wei, GuiLu Long
2021 arXiv   pre-print
Advanced Encryption Standard(AES) is one of the most widely used block ciphers nowadays, and has been established as an encryption standard in 2001. Here we design AES-128 and the sample-AES(S-AES) quantum circuits for deciphering. In the quantum circuit of AES-128, we perform an affine transformation for the SubBytes part to solve the problem that the initial state of the output qubits in SubBytes is not the |0⟩^⊗ 8 state. After that, we are able to encode the new round sub-key on the qubits
more » ... coding the previous round sub-key, and this improvement reduces the number of qubits used by 224 compared with Langenberg et al.'s implementation. For S-AES, a complete quantum circuit is presented with only 48 qubits, which is already within the reach of existing noisy intermediate-scale quantum computers.
arXiv:2109.12354v1 fatcat:2moy4ip2nbay7cbrrrkhfeh62y