| “荡秋千”分组密码算法的设计与分析 |
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| 作者姓名： | 张雅 |
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| 作者单位： | 中国科学院研究生院信息安全国家重点实验室, 北京 100039 |
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| 基金项目： | 国家杰出青年科学基金资助(60025205 );中国科学院研究生院信息安全国家重点实验室开放课题基金资助;973资助项目(G1999035802) |
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| 摘 要： | 提出了一种基于移位寄存器状态变化的分组加密算法(称之为 荡秋千"密码算法),并详细给出了算法的加解密流程和必要的参数设置方法.通过对密钥雪崩效应和明文雪崩效应的基本分析,说明了该算法具有良好的抵抗密钥相关攻击、线性攻击和差分攻击的性能.除了具有安全、快速、易于实现等特点外,该算法最突出的特点是算法逻辑结构简洁、严谨,有效地实施了混合与扩散
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| 关 键 词： | 移位寄存器分组密码 快速加密算法 安全性分析 |
| 收稿时间： | 2001-10-29 |
| 修稿时间： | 2001-12-27 |
Design and Analysis of Block Cipher Algorithm SWING |
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| Authors: | ZHANG Ya |
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| Institution: | State Key Laboratory of Information Security, Institute of Software of the Chinese Academy of Science, Beijing 100039 |
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| Abstract: | The new symmet ric block cipher SWING which we put forward here is wholly performed by the state change of a shift register.We give the detailed encryption and decryption schemes and setting s of some necessary parameters.By the cryptanalysis of key bit avalanche effect and plaintext bit avalanche effect, we show that SWING has remarkable properties on defending of some usual ways of cry ptanaly sis and attacks, such as linear and differential cry ptanalysis, and related keys.Besides security, easy implementation and high speed of encryption and decryption, SWING has as well the feature of precision and simple structure which serves efficient confusion and diffusion. |
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| Keywords: | shift-register-implemented block cipher scheme fast encryption scheme cry ptanaly sis |
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