Smart home is an emerging form of the Internet of Things (IoT), enabling people to enjoy a convenient and intelligent life. The data generated by smart home devices are transmitted through the public channel, which is not secure enough, so the secret data in smart home are easily intercepted by malicious adversaries. In order to solve this problem, this paper proposes a smart home privacy protection method combining DES encryption and the improved Least Significant Bit (LSB) information hiding algorithm, changing the practice of directly exposing smart home secret information to the Internet, first, using Data Encryption Standard (DES) encryption to encrypt the smart home information and second, the improved LSB information hiding algorithm is used to hide the ciphertext, so that the adversary cannot detect the smart home secret information. The goal of the scheme is to provide a double protection for the secure transmission of the smart home secret information. If an attacker wants to carry out an attack, it has to break through at least two defense lines, which seems impossible to do. Experiment results show that the improved LSB algorithm is more robust than the existing algorithms, and it is very safe. Therefore, the scheme proposed in this paper is very practical for protecting the smart home secret information.

中文翻译：

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基于改进的LSB信息隐藏的智能家居隐私保护

智能家居是物联网（IoT）的新兴形态，让人们享受便捷、智能的生活。智能家居设备产生的数据通过公共渠道传输，不够安全，因此智能家居中的秘密数据很容易被恶意对手截获。为了解决这个问题，本文提出了一种结合DES加密和改进的最低有效位（LSB）信息隐藏算法的智能家居隐私保护方法，改变了将智能家居秘密信息直接暴露在互联网上的做法，首先，使用数据加密标准（DES）加密对智能家居信息进行加密，二是采用改进的LSB信息隐藏算法隐藏密文，使攻击者无法检测到智能家居的秘密信息。该方案的目标是为智能家居秘密信息的安全传输提供双重保护。如果攻击者想要进行攻击，它必须至少突破两道防线，这似乎是不可能做到的。实验结果表明，改进后的LSB算法比现有算法具有更强的鲁棒性，并且非常安全。因此，本文提出的方案对于保护智能家居秘密信息非常实用。