Separable Reversible Data Hiding in Encrypted Signals with Public Key Cryptography

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Please use this identifier to cite or link to this item: https://irlib.pccu.edu.tw/handle/987654321/41963

Title:	Separable Reversible Data Hiding in Encrypted Signals with Public Key Cryptography
Authors:	Tai, WL (Tai, Wei-Liang) Chang, YF (Chang, Ya-Fen)
Contributors:	資訊傳播學系暨資訊傳播研究所
Keywords:	IMAGES
Date:	2018-01
Issue Date:	2019-01-23 10:36:14 (UTC+8)
Abstract:	We propose separable reversible data hiding in an encrypted signal with public key cryptography. In our separable framework, the image owner encrypts the original image by using a public key. On receipt of the encrypted signal, the data-hider embeds data in it by using a data-hiding key. The image decryption and data extraction are independent and separable at the receiver side. Even though the receiver, who has only the data-hiding key, does not learn about the decrypted content, he can extract data from the received marked encrypted signal. However, the receiver who has only the private key cannot extract the embedded data, but he can directly decrypt the received marked encrypted signal to obtain the original image without any error. Compared with other schemes using a cipher stream to encrypt the image, the proposed scheme is more appropriate for cloud services without degrading the security level.
Appears in Collections:	[Department of Information Management & Graduate Institute of Information Management] periodical articles

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