Rijndael算法（如何创建自己的密钥） [英] Rijndael algorithm (How to create our own Key )

问题描述

所有Rijndael算法的样本被定义从Rijndael算法类本身的关键，我们不能提供我们自己的关键。在这个任何暗示将帮助我很多东西。

我们正在创建示例应用程序是为Windows Mobile，它不支持PasswordDeriveBytes

提前
Geetha关于这一主题

更新

感谢：
按下面提供的代码示例中，我们已经尝试它，它似乎是工作，但有一个小嗝于此。当我们解密数据有一个8位的填充了上例中的值的右侧，我们加密了交易的唯一密钥，它看起来是这样的：

加密前：
MI03112009044625000000000000008024754008

解密后：
MI03112009044625000000000000008024754008揞⑁㋬㓠⥳空⠜资

任何人都可以在这个右填充的原始值发生有所帮助。

由于
Geetha

解决方案

您可以尝试这样的事情的基础上的 RijndaelManaged类MSDN文章，我也建议你阅读。

  VAR明文=这将被加密。 
变种aesAlg =新RijndaelManaged的（）; 
 aesAlg.Key =新的字节[32] {118，123，23，17，161，152，35，68，126，213，16，115，68，217，58，108，56，218， 5，78，28，128，113，208，61，56，10，87，187，162，233，38}; 
 aesAlg.IV =新的字节[16] {33，241，14，16，103，18，14，248，4,54，18，5，60，76，16，191}; 
 ICryptoTransform的加密= aesAlg.CreateEncryptor（aesAlg.Key，aesAlg.IV）; 
 
 msEncrypt =新的MemoryStream（）; 
使用（CryptoStream的csEncrypt =新的CryptoStream（msEncrypt，加密，CryptoStreamMode.Write））{使用
（StreamWriter的swEncrypt =新的StreamWriter（csEncrypt））{
 swEncrypt.Write（明文）; 
} 
} 
 
返回msEncrypt.ToArray（）; 
  

All the samples for Rijndael algorithm are defining the key from the Rijndael class itself, can't we provide the Key of our own. Any hint on this will help me a lot.

The sample application we are creating is for windows mobile and it doesn't support PasswordDeriveBytes

Thanks in advance Geetha

Update on this topic: As per the code sample provided below, we have tried it and it seems to be working but there is a small hiccup in this. when we decrypt the data there is a 8 bit padding up on the right side of the value for the example, we are encrypting a Unique key for transaction and it looks like this :

Before encryption: MI03112009044625000000000000008024754008

After Decryption: MI03112009044625000000000000008024754008揞⑁㋬㓠⥳空⠜資

can anyone help on this right padding happening in the original value.

thanks Geetha

解决方案

You can try something like this, based on the RijndaelManaged Class MSDN article that I also recommend you to read.

var plainText = "This will be encrypted.";
var aesAlg = new RijndaelManaged();
aesAlg.Key = new byte[32] { 118, 123, 23, 17, 161, 152, 35, 68, 126, 213, 16, 115, 68, 217, 58, 108, 56, 218, 5, 78, 28, 128, 113, 208, 61, 56, 10, 87, 187, 162, 233, 38 };
aesAlg.IV = new byte[16] { 33, 241, 14, 16, 103, 18, 14, 248, 4, 54, 18, 5, 60, 76, 16, 191};
ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);

msEncrypt = new MemoryStream();
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)) {
    using (StreamWriter swEncrypt = new StreamWriter(csEncrypt)) {
        swEncrypt.Write(plainText);
    }
}

return msEncrypt.ToArray();

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