Efficient Techniques For Partial Encryption of Wavelet-based Compressed Digital Images

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  Hameed A. Younis   |      TURKI Y. ABDALLAH   |      Abdulkareem Y. Abdalla   |   

The use of image communication has increased in recent years. In this paper, new partial encryption schemes are used 10 encrypt only part of the compressed data. Only 0.0244-20.4357% of the original data is encrypted for four different images, resulting in a significant reduction in encryption and decryption time. In the compression step, the advanced wavelet coding schemes (the Embedded Zerotree Wavelet (EZW) algorithm, the Set Partition in Hierarchical Trees (SPIHT) algorithm) and Joint Photographic Expert Group (JPEG) technique are used. In the encryption step, the Advanced Encryption Standard (AES) cipher is used. The effect of different compression r:~tios is studied. The proposed partial encryption schemes are fast and secure, and do not reduce the compression performance of the underlying selected compression methods.