ESSVCS: An Enriched Secret Sharing Visual Cryptography

Abstract

Abstract. Visual Cryptography (VC) is a powerful technique that combines the notions of perfect ciphers and secret sharing in cryptography with that of raster graphics. A binary image can be divided into shares that are able to be stacked together so as to approximately recover the original image. VC is a unique technique in the sense that the encrypted message can be decrypted directly by the Human Visual System (HVS). The distinguishing characteristic of VC is the ability of secret restoration without the use of computation. However because of restrictions of the HVS, pixel expansion and alignment problems, a VC scheme perhaps can only be applied to share a small size of secret image. In this paper, we propose a general method to let the VC shares carry more secrets, the technique is to use cypher output of private-key systems as the input random numbers of VC scheme, meanwhile the encryption key could be shared, the shared keys could be associated with the VC shares. After this operation, VC scheme and secret sharing scheme are merged with the private-key system. Under this design, we implement a (k, t, n)-VC scheme. Compared to those existing schemes, our approach could greatly enhance the ability of current VC schemes and could cope with pretty rich secrets.

References

“…273 SKLOIS scientist Liu Feng 刘峰 co-authored a paper with Yan Weiqi on encryption of visual information. 274 Liu was a recipient of a 2013 China-New Zealand Scientist Exchange Programme, where he was based at AUT. 275 Liu Feng is a cryptology specialist.…”

Implementation of TiOISSS with meaningful shadows and with an additional authentication image

“…In [14], an Enriched Secret Sharing Visual Cryptography Scheme (ESSVCS) has been developed to improve security which uses VCS, PISS and private key encryption system to share more data. However, this scheme is not able to provide perfect reconstruction of the secret image.…”

A High‐Quality Authenticatable Visual Secret Sharing Scheme Using SGX

“…Sharing secrets with high-quality recovery is interesting, and consequently, many improved VCSs have been proposed. Some schemes present methods where highquality secret recovery is possible [9]. These schemes, however, rely on complicated computation or archive at the expense of expanding pixels.…”

“…Extracted watermarks 9. Wireless Communications and Mobile Computing increasing, the performance overhead decreases from 11 : 3x (for one image) to 5 : 1x (for 15 images).…”