| 数据加密中OFB-DES算法模式的研究 |
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| 引用本文： | 仲丛久,关宗安.数据加密中OFB-DES算法模式的研究[J].沈阳航空工业学院学报,2005,22(2):60-62. |
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| 作者姓名： | 仲丛久 关宗安 |
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| 作者单位： | 沈阳航空工业学院电子工程系,辽宁,沈阳,110034 |
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| 摘 要： | 随着计算机技术和通信技术的发展，对数据传输的要求越来越高，而数据的保密和安全是十分必要的。文中设计的OFB算法操作模式是DES加密标准通用的四种模式之一。其中主要介绍了OFB算法操作模式加密与解密的原理及操作过程。利用LFSR寄存器产生MI，将MI进行DES运算后与明文相异或产生密文，解密为其逆过程。为了加强密码的安全性，本文采用了64位OFB的模型，在没有错误扩散的基础上，更适合数字化音频或视频的加密。
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| 关 键 词： | 操作模式 DES 输出反馈模式 加密 |
| 文章编号： | 1007-1385(2005)02-0060-02 |
| 修稿时间： | 2005年1月13日 |
The research of OFB-DES mode in the encrypt of data |
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| ZHONG Cong-jiu,GUAN Zong-an.The research of OFB-DES mode in the encrypt of data[J].Journal of Shenyang Institute of Aeronautical Engineering,2005,22(2):60-62. |
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| Authors: | ZHONG Cong-jiu GUAN Zong-an |
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| Abstract: | The transmission of data is requested grimly more and more for the progress of the technique of the computer and communicate .The secrecy and safety of data is very necessary . The operator schema of OFB arithmetic is one of four kinds of all-purpose encryption standard of DES. This article introduces the principle of encryption and decipherment and the operation process of this arithmetic. MI is from LFSR register. The cryptograph is from the operation of plaintext and MI after being operated by DES.The decryption is an athwart course.In order to strengthen cryptogrammic security, the article adopts the model of 64-bit OFB. It is more fit for the encryption of digital audio frequency and video frequency based on without error diffusion. |
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| Keywords: | operation mode DES OFB encrypt |
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