关键词: Clifford映射，混沌序列，图像加密，加法模运算

Abstract: Based on Clifford super chaotic map, a novel image secure communication scheme was proposed. In this scheme, the process of confusion permutes a plain-image with Clifford map for the pretreatment, and process of diffusion is based on additive modular arithmetic. In every iteration,the arithmetic adopts the different keys. Once the synchronination of the communication between the sender and recevier is satisfied, the encrypted image can be correctly recovered into the source image. The results of computer numerical stimulation indicate the sheme proposed is feasible. Finally, we analyzed some cryptography properties of the scheme such as the key space and the sensitivity of the encrypted with resped to the secret key.

Key words: Clifford map, Chaotic sequences, Image encryption, Additive modular