A chaotic-cipher-based packet body encryption algorithm for JPEG2000 images

• A chaotic-cipher-based encryption algorithm for JPEG2000 images is proposed.
• The algorithm produces a compliant JPEG2000 codestream.
• The algorithm relies on a 2-byte block encryption procedure for packet body data.
• A repeatedly encryption process is adopted to eliminate marker codes.
• The proposed algorithm is of high security and simplicity.

A chaotic-cipher-based packet body encryption algorithm for JPEG2000 images is proposed in this paper. In order to produce a compliant codestream, a 2-byte block encryption procedure including bit-wise exclusive OR and cyclic rotation operations is investigated. Moreover, a repeatedly encryption process is adopted to eliminate the undesirable marker codes during encryption. The repeatedly encryption process only introduces a negligible computational overhead. Both simulations and analysis show that the proposed algorithm is of high security and simplicity. Therefore, these good properties make the algorithm efficient to process and useful for image applications.