New approach to image encryption

Trees Juen Chuang, Chih_Ching Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


A new cryptographic method for encrypting still images is proposed. This method is designed on the basis of the base-switching lossless image compression algorithm. The method therefore simultaneously possesses both image encryption and lossless compression abilities. A given image is first partitioned into nonoverlapping fixed-size subimages, and each subimage will then have its own base value. These subimages are then encoded and encrypted one by one according to the base values. By choosing the function to encrypt the base value, there are (128!)t [or (128!)3t] possible ways to encrypt a gray-scaled (color) image if t layers are used in the encryption system. The theoretical analysis needed to support the proposed encryption method is provided, and the experimental results are also presented.

Original languageEnglish
Pages (from-to)350-356
Number of pages7
JournalJournal of Electronic Imaging
Issue number2
StatePublished - 1 Jan 1998

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