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Advanced Partial Image Encryption using Two-Stage Hill Cipher Technique
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 60 - Number 16 |
| Year of Publication: 2012 |
| Authors: Panduranga H T, Naveen Kumar S K |
10.5120/9775-4341
|
Panduranga H T, Naveen Kumar S K . Advanced Partial Image Encryption using Two-Stage Hill Cipher Technique. International Journal of Computer Applications. 60, 16 ( December 2012), 14-19. DOI=10.5120/9775-4341
Abstract
Information security is a fast growing research field which includes numerous problems in it. Partial image encryption is one of the important problems in the field of image information security. This paper describes the partial image encryption in two ways using hill cipher technique. First encryption technique uses two slightly different keys to construct two self-invertible matrices, which are used in two different stages to get partially encrypted image. Second encryption technique useone key to construct one self-invertible matrix and it is used in first stage. In second stage same key matrix along with few modification in diagonal values are used to construct another self-invertible matrix which leads to partial image encryption. Reverse process is employed to reconstruct the original image. Experiment is conducted for different images with different combinations of passwords to obtain partially encrypted image.
References
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