Reversible Data Hiding in Encrypted Text using Paillier cryptosystem

Asad Malik, Aeyan Ashraf, Hanzhou Wu, Minoru Kuribayashi

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch


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.

Original languageEnglish
Title of host publicationProceedings of 2022 APSIPA - Annual Summit and Conference Chiang Mai, Thailand November 7-10, 2022
EditorsUkrit Mankong
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages5
ISBN (Electronic)9786165904773
ISBN (Print)9781665486620
Publication statusPublished - 2022
Externally publishedYes
EventAnnual Summit and Conference of the Asia-Pacific-Signal-and-Information-Processing-Association (APSIPA) 2022 - Chiang Mai, Thailand
Duration: 7 Nov 202210 Nov 2022 (Proceedings) (Website)


ConferenceAnnual Summit and Conference of the Asia-Pacific-Signal-and-Information-Processing-Association (APSIPA) 2022
Abbreviated titleAPSIPA ASC 2022
CityChiang Mai
Internet address


  • Cloud Computing
  • Encrypted Domain
  • Homomorphic Cryptography
  • Reversible Data Hiding

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