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| 一种自适应的图像加密算法 |
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陈刚1,2, 赵晓宇1,2, 李均利1
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1.宁波大学,数字技术与应用软件研究所,浙江,宁波,315211;2.浙江大学,图像图形研究所,浙江,杭州,310027
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| 摘要: |
| 给出一种新的自适应图像置乱加密算法,加密后的图像可以有效防止已知明文的攻击.并且,算法具有良好的完整性保护功能,可用于图像验证.实验结果表明,算法在运算速度、抗攻击能力等方面具有良好的效果. |
| 关键词: 遍历 图像置乱 自适应 验证 加密 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant No.60302012 (国家自然科学基金); the Special Science and Technology Foundation of Ningbo of China under the Grant No.2005B 100016 (宁波市科技攻关项目) |
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| A Self-Adaptive Algorithm on Image Encryption |
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CHEN Gang,ZHAO Xiao-Yu,LI Jun-Li
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| Abstract: |
| In this paper, a new self-adaptive image encryption algorithm is presented, which takes on a thorough integrity protect function and can be used in data validation. First, ergodic matrices are used to realize the position permutation algorithms. In particular, several novel methods of scrambling are proposed. By analysis of the weakness of pure position algorithms, a novel improved self-adaptive algorithm is proposed, which is strong under known-plaintext attack on image encryption. Finally the speed and safety of the new algorithm are analyzed and some simulation results are given. |
| Key words: ergodic image scramble self-adaptive validate encryption |
