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PHP：对称加密及url加密应用

彭世瑜发布时间：2019-06-19 00:09:41 ，浏览量：1

加密解决的问题

1、防止通信内容被窃听 2、防止通信内容被篡改在这里插入图片描述

对称加密 DES

Data Encryption Standard 可以被暴力破解

加密：明文 + 秘钥 -> DES加密 -> 密文
解密：密文 + 秘钥 -> DES解密 -> 明文

对称加密 Triple-DES

3次DES,性能较差

对称加密 AES

Advance Encryption Standard 安全的

加密：字节替换 -> 列移动 -> 混合列 -> 与秘钥进行XOR
解密：字节替换


    
        



        
        
            
                
                
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