.NET中的对称加密/解密 [英] Symmetric encrypt/decrypt in .NET

问题描述

我在C＃之后进行了一个对称的加密/解密程序。我知道以前有关于这个主题的几个问题，但大多数答案似乎都是关于加密的理念，而不是给出实际的代码。

更新：我真的很想看到一些代码，而不仅仅是链接。非常感谢！

解决方案

查看此页面。

粘贴在这里：

  int Rfc2898KeygenIterations = 100; 
 int AesKeySizeInBits = 128; 
 String Password =VerySecret！; 
 byte [] Salt = new byte [16]; 
 System.Random rnd = new System.Random（）; 
 rnd.NextBytes（Salt）; 
 byte [] rawPlaintext = System.Text.Encoding.Unicode.GetBytes（This are all clear now！）; 
 byte [] cipherText = null; 
 byte [] plainText = null; 
使用（Aes aes = new AesManaged（））
 {
 aes.Padding = PaddingMode.PKCS7; 
 aes.KeySize = AesKeySizeInBits; 
 int KeyStrengthInBytes = aes.KeySize / 8; 
 System.Security.Cryptography.Rfc2898DeriveBytes rfc2898 = 
 new System.Security.Cryptography.Rfc2898DeriveBytes（Password，Salt，Rfc2898KeygenIterations）; 
 aes.Key = rfc2898.GetBytes（KeyStrengthInBytes）; 
 aes.IV = rfc2898.GetBytes（KeyStrengthInBytes）; 
使用（MemoryStream ms = new MemoryStream（））
 {
 using（CryptoStream cs = new CryptoStream（ms，aes.CreateEncryptor（），CryptoStreamMode.Write））
 {
 cs.Write（rawPlaintext，0，rawPlaintext.Length）; 
} 
 cipherText = ms.ToArray（）; 
} 
 
使用（MemoryStream ms = new MemoryStream（））
 {
 using（CryptoStream cs = new CryptoStream（ms，aes.CreateDecryptor（），CryptoStreamMode。写））
 {
 cs.Write（cipherText，0，cipherText.Length）; 
} 
 plainText = ms.ToArray（）; 
} 
} 
 string s = System.Text.Encoding.Unicode.GetString（plainText）; 
 Console.WriteLine（s）; 
  

I am after a symmetric encryption/decryption routine in C#. I know there have been a few questions on this topic before, but most of the answers seem to be about the philosophy of encryption rather than giving actual code.

Update: I'd really like to see some code, rather than just links. Many thanks!

解决方案

Look at the example code at the bottom of this page.

Copy-pasting it here:

int Rfc2898KeygenIterations= 100;
int AesKeySizeInBits = 128;
String Password = "VerySecret!";
byte[] Salt = new byte[16];
System.Random rnd = new System.Random(); 
rnd.NextBytes(Salt);
byte[] rawPlaintext = System.Text.Encoding.Unicode.GetBytes("This is all clear now!");
byte[] cipherText= null;
byte[] plainText= null;
using (Aes aes = new AesManaged())
{
    aes.Padding = PaddingMode.PKCS7;
    aes.KeySize = AesKeySizeInBits;
    int KeyStrengthInBytes= aes.KeySize/8;
    System.Security.Cryptography.Rfc2898DeriveBytes rfc2898 =
        new System.Security.Cryptography.Rfc2898DeriveBytes(Password, Salt, Rfc2898KeygenIterations);
    aes.Key = rfc2898.GetBytes(KeyStrengthInBytes);
    aes.IV = rfc2898.GetBytes(KeyStrengthInBytes);
    using (MemoryStream ms = new MemoryStream())
    {
        using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write))
        {
            cs.Write(rawPlaintext, 0, rawPlaintext.Length);
        }
        cipherText= ms.ToArray();
    }

    using (MemoryStream ms = new MemoryStream())
    {
        using (CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Write))
        {
            cs.Write(cipherText, 0, cipherText.Length);
        }
        plainText = ms.ToArray();
    }
}
string s = System.Text.Encoding.Unicode.GetString(plainText);
Console.WriteLine(s);

这篇关于.NET中的对称加密/解密的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！