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CryptionDemoOnKotlin

使用Kotlin实现常见的对称加密、非对称加密、消息摘要、数字签名的demo

对称加密

  • 算法

    • DES
    • AES
  • 特点 可逆、加密速度快,可以加密大文件

非对称加密

  • 算法

    • RSA
  • 特点

    • 可逆、加密速度慢
    • 公钥加密、私钥解密;私钥加密、公钥解密。
    • 公钥互换

消息摘要

  • 算法

    • MD5
    • SHA1
    • SHA256
  • 特点

    • 不可逆,加密后不可破解
    • 加密后秘文长度固定,和原始数据大小无关

数字签名

  • 算法 SHA256withRSA 消息摘要+非对称加密

  • 特点

    • 私钥签名
    • 公钥校验

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