Image steganography, the practice of concealing information within another
image, traditionally faces security challenges when its methods become publicly
known. To counteract this, we introduce a novel private key-based image
steganography technique. This approach ensures the security of hidden
information, requiring a corresponding private key for access, irrespective of
the public knowledge of the steganography method. We present experimental
evidence demonstrating our method's effectiveness, showcasing its real-world
applicability. Additionally, we identified a critical challenge in the
invertible image steganography process: the transfer of non-essential, or
`garbage', information from the secret to the host pipeline. To address this,
we introduced the decay weight to control the information transfer, filtering
out irrelevant data and enhancing the performance of image steganography. Our
code is publicly accessible at this https URL, and a
practical demonstration is available at this http URL

介绍了一种基于密钥的图像隐写术技术，确保隐藏信息的安全，无论隐写方法是否公开。通过引入衰减权重来解决可逆图像隐写术中的关键问题，控制信息传输并提高图像隐写术性能。