Abstract
The traffic of digital images has increased rapidly in the wide networks. The protection of this kind of data becomes important for many reasons such as confidentiality, obscurity and security. Nowadays, the most important engine to provide confidentiality is encryption. Therefore, the classical and modern ciphers are not suitable for such huge quantity of data in real-time environment. Selective encryption (SE) is an approach to encode a portion of the data in order to reduce computational requirements and to provide a proportional privacy. This paper presents a new method of partial or selective encryption for JPEG images. It is based on encoding of some Huffman bitstream with AES cipher. The proposed method results in a significant reduction in encrypting and decrypting processing time, provides a constant bit rate and keeps the JPEG bitstream compliance.