-1-1 M 关于数据加密

时间:2024-03-06 13:51:33
数据加密算法(Data Encryption Algorithm,DEA)是一种对称加密算法,很可能是使用最广泛的密钥系统,特别是在保护金融数据的安全中,最初开发的DEA是嵌入硬件中的。通常,自动取款机(Automated Teller Machine,ATM)都使用DEA。它出自IBM的研究工作,IBM也曾对它拥有几年的专利权,但是在1983年已到期后,处于公有范围中,允许在特定条件下可以免除专利使用费而使用。1977年被美国*正式采纳。 DES的原始思想可以参照二战德国的恩格玛机,其基本思想大致相同。传统的密码加密都是由古代的循环移位思想而来,恩格玛机在这个基础之上进行了扩散模糊。但是本质原理都是一样的。现代DES在二进制级别做着同样的事:替代模糊,增加分析的难度。 DES的加密原理,是使用一个 56 位的密钥以及附加的 8 位奇偶校验位,产生最大 64 位的分组大小。这是一个迭代的分组密码,使用称为 Feistel 的技术,其中将加密的文本块分成两半。使用子密钥对其中一半应用循环功能,然后将输出与另一半进行“异或”运算;接着交换这两半,这一过程会继续下去,但最后一个循环不交换。DES 使用 16 个循环,使用异或,置换,代换,移位操作四种基本运算。 类似于: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当然,这些都是base64编码。那么,什么是base64呢? Base64是网络上最常见的用于传输8Bit字节代码的编码方式之一,大家可以查看RFC2045~RFC2049,上面有MIME的详细规范。Base64编码可用于在HTTP环境下传递较长的标识信息。例如,在Java Persistence系统Hibernate中,就采用了Base64来将一个较长的唯一标识符(一般为128-bit的UUID)编码为一个字符串,用作HTTP表单和HTTP GET URL中的参数。在其他应用程序中,也常常需要把二进制数据编码为适合放在URL(包括隐藏表单域)中的形式。此时,采用Base64编码不仅比较简短,同时也具有不可读性,即所编码的数据不会被人用肉眼所直接看到。 比如,编写一个“123”,得出的结果就是“MTIz”。