A new (k,n) verifiable secret image sharing scheme (VSISS)

• Main Authors: Amitava Nag, Sushanta Biswas, Debasree Sarkar, Partha Pratim Sarkar
• Format: Article
• Language: English
• Published: Elsevier 2014-11-01
• Series: Egyptian Informatics Journal
• Subjects: VSISS; LFSR-based public key cryptosystem; Cheating prevention; Encrypted share
• Online Access: http://www.sciencedirect.com/science/article/pii/S1110866514000334

In this paper, a new (k,n) verifiable secret image sharing scheme (VSISS) is proposed in which third order LFSR (linear-feedback shift register)-based public key cryptosystem is applied for the cheating prevention and preview before decryption. In the proposed scheme the secret image is first partitioned into several non-overlapping blocks of k pixels. Every k pixel is then used to form m=⌈k/4⌉+1 pixels of one encrypted share. The original secret image can be reconstructed by gathering any k or more encrypted shared images. The experimental results show that the proposed VSISS is an efficient and safe method.