2020/11/30-M-关于DES浅谈
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。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”。
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