Reversible Data Hiding in Encrypted Text Using Paillier Cryptosystem
Reversible Data Hiding in Encrypted Text Using Paillier Cryptosystem
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DOI：
10.23919/apsipaasc55919.2022.9979998
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发表时间：
2022-09
期刊：
影响因子：
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通讯作者：
Asad Malik;Aeyan Ashraf;Han-Yan Wu;M. Kuribayashi
中科院分区：
文献类型：
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作者：
Asad Malik;Aeyan Ashraf;Han-Yan Wu;M. Kuribayashi
加密域可逆数据隐藏技术（RD-HED）是一种既能保证隐藏信息的秘密性，又能允许隐藏者在其中插入额外信息的新方法，本文提出了一种新的加密文本中的数据隐藏技术--加密文本可逆数据隐藏技术（RDHET）。最初，原始文本被转换为ASCII值。然后，采用Paillier密码体制对原始文本的所有ASCII值进行加密，并将其发送到数据隐藏器进行进一步处理。在数据隐藏阶段，使用不丢失任何信息的技术将秘密数据嵌入到同态加密的文本中，即，Paillier密码系统的同态性质。最后，在接收端将嵌入的秘密数据和原始文本恢复出来，没有任何损失。实验结果表明，该方案是至关重要的，在基于云的服务的加密文本处理的上下文中。此外，该方案工作良好，特别是在嵌入阶段，文本恢复，并在不同的安全密钥大小的性能。
Reversible Data Hiding in Encrypted Domain (RD-HED) is an innovative method that can keep cover information secret and allows the data hider to insert additional information into it. This article presents a novel data hiding technique in an encrypted text called Reversible Data Hiding in Encrypted Text (RDHET). Initially, the original text is converted into their ASCII values. After that, the Paillier cryptosystem is adopted to encrypt all ASCII values of the original text and send it to the data hider for further processing. At the data hiding phase, the secret data are embedded into homomorphically encrypted text using a technique that does not lose any information, i.e., the homomorphic properties of the Paillier cryptosystem. Finally, the embedded secret data and the original text are recovered at the receiving end without any loss. Experimental results show that the proposed scheme is vital in the context of encrypted text processing at cloud-based services. Moreover, the scheme works well, especially for the embedding phase, text recovery, and performance on different security key sizes.