文件名称:DES
- 所属分类：
- 加密解密
- 资源属性：
- [Windows] [Visual C] [源码]
- 上传时间：
- 2012-11-26
- 文件大小：
- 7kb
- 下载次数：
- 0次
- 提 供 者：
- John****
- 相关连接：
- 无
- 下载说明：
- 别用迅雷下载，失败请重下，重下不扣分！
介绍说明－－下载内容均来自于网络，请自行研究使用
用C语言写的100行DES加密算法.
DES算法具有极高安全性，到目前为止，除了用穷举搜索法对DES算法进行攻击外，还没有发现更有效的办法。而56位长的密钥的穷举空间为256，这意味着如果一台计算机的速度是每一秒种检测一百万个密钥，则它搜索完全部密钥就需要将近2285年的时间，可见，这是难以实现的，当然，随着科学技术的发展，当出现超高速计算机后，我们可考虑把DES密钥的长度再增长一些，以此来达到更高的保密程度。-Using C language to write 100 lines of the DES encryption algorithm. DES algorithm has high security, so far, except by exhaustive search attack on the DES algorithm, but also found no more effective way. And 56 long exhaustive key space for the 256, which means that if a computer s speed is detected every second of one million keys, it searches entirely on the needs of key Department of nearly 2285 time can be seen, it is difficult to realize, of course, with the development of science and technology, when the emergence of ultra-high-speed computer, we can consider the DES key length and then some growth in order to achieve higher levels of security.
DES算法具有极高安全性，到目前为止，除了用穷举搜索法对DES算法进行攻击外，还没有发现更有效的办法。而56位长的密钥的穷举空间为256，这意味着如果一台计算机的速度是每一秒种检测一百万个密钥，则它搜索完全部密钥就需要将近2285年的时间，可见，这是难以实现的，当然，随着科学技术的发展，当出现超高速计算机后，我们可考虑把DES密钥的长度再增长一些，以此来达到更高的保密程度。-Using C language to write 100 lines of the DES encryption algorithm. DES algorithm has high security, so far, except by exhaustive search attack on the DES algorithm, but also found no more effective way. And 56 long exhaustive key space for the 256, which means that if a computer s speed is detected every second of one million keys, it searches entirely on the needs of key Department of nearly 2285 time can be seen, it is difficult to realize, of course, with the development of science and technology, when the emergence of ultra-high-speed computer, we can consider the DES key length and then some growth in order to achieve higher levels of security.
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下载文件列表
DES
...\WjcDes.cpp
...\WjcDes.h
...\WjcDesTest.cpp
...\WjcDesTest.dsp
...\WjcDesTest.dsw
...\WjcDesTest.opt
...\WjcDes.cpp
...\WjcDes.h
...\WjcDesTest.cpp
...\WjcDesTest.dsp
...\WjcDesTest.dsw
...\WjcDesTest.opt