Reversible Data Hiding in Encrypted Domain (RDHED) 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.
翻译:在加密域( RDHED) 中, 翻译数据隐藏是一种创新方法, 可以隐藏信息秘密, 让数据隐藏者在其中插入更多信息。 文章在加密文本( RDHET) 的加密文本中展示了一种新的数据隐藏技术。 最初, 原始文本被转换为 ASCII 值 。 在此之后, Paillier 加密系统将加密原始文本的所有 ASCII 值, 并将其发送到数据隐藏者进一步处理 。 在数据隐藏阶段, 秘密数据被嵌入同质加密文本中, 使用不会丢失任何信息的技术, 即 Paillier 加密文本系统的同态特性 。 最后, 嵌入的秘密数据和原始文本将在接收端恢复, 没有任何损失 。 实验结果显示, 在基于云的服务加密文本处理过程中, 拟议的方案至关重要 。 此外, 计划运作良好, 特别是对于嵌入阶段、 文本恢复和不同安全键大小的性能 。