Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5007924 | Optics and Lasers in Engineering | 2017 | 21 Pages |
Abstract
A joint lossless image encryption and compression scheme based on integer wavelet transform (IWT) and set partitioning in hierarchical trees (SPIHT) is proposed to achieve lossless image encryption and compression simultaneously. Making use of the properties of IWT and SPIHT, encryption and compression are combined. Moreover, the proposed secure set partitioning in hierarchical trees (SSPIHT) via the addition of encryption in the SPIHT coding process has no effect on compression performance. A hyper-chaotic system, nonlinear inverse operation, Secure Hash Algorithm-256(SHA-256), and plaintext-based keystream are all used to enhance the security. The test results indicate that the proposed methods have high security and good lossless compression performance.
Keywords
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Engineering
Electrical and Electronic Engineering
Authors
Miao Zhang, Xiaojun Tong,