Distributed data hiding in a single cloud storage environment

Abstract

Distributed steganography is an approach to concealing the secret in several files, leaving fewer traces than the classical approach. Recent work proposed by Moyou and Ndoumdan have improved this approach by preserving the integrity of these files in a multi-cloud storage environment. However, the approach requires a large size of the stego-key and the management of several cloud storage environments. Our contribution consists is to improve this approach by using a single cloud storage environment and reducing the size of the stego-key. In this work, a single cloud storage environment is used to solve the problems of managing several credentials, monetary costs and data controls associated with multi-cloud storage environments. The comparisons showed interesting results with simpler operations to be performed by the participants during the process.

Secure and Practical High Capacity Coverless Image Steganography Approach : WYSAWIS

“…This method is used in our approach to send location information in a secure way. It was proposed by Mossebo et al in 2021 [17]. The sender and receiver share the credentials of a cloud account and the base used, which represents the key, before the communication.…”

“…For example, in Zheng et al's method, it consists of the order of the image blocks, in Abdulsattar's method it consists of the block numbers of an image, and in our method, it consists of the sequence numbers of an image block. Thus, the hierarchical hiding structure (folder → f ile) of the distributed data hiding approach in a single cloud of Mossebo et al [17] motivated our choice of this approach for sending location information in our method.…”

“…The position of each of these segments is searched in the index structure, generating a pair (block number, sequence number). These pairs represent the location information, which is encrypted using chain and shift encryption algorithms and sent using the distributed data hiding technique to a single cloud of Mossebo et al [17]. To extract the message, the receiver uses its cloud credentials to extract the location information from the cloud and the stego image to compute the corresponding sequences that are concatenated to retrieve the secret message.…”

“…To index a large number of possible hash sequences quickly and easily, our hash algorithm maps different hash sequences, rather than a single hash sequence, to an image block, not to an entire image. We explore the effectiveness of sending location information securely and practically by using a distributed data hiding method in a single cloud developed by Mossebo et al [17].…”