为了减少论文重复请用英语重新描述下面句子：In this paper we propose a Bit-level image privacy protection using a Zigzag and chain-diffusion scheme The experimental results show that the algorithm is excellent in encryption

In this research paper, we present a Zigzag and chain-diffusion scheme for Bit-level image privacy protection. Our experimental findings demonstrate the algorithm's outstanding performance in encryption, with good efficiency and the ability to withstand various unauthorized attacks on image encryption.