找到一个net的连接加密工具，但不会用，分享下

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mssql连接串加解密.rar (14.85 KB)

2011-2-18 13:54, 下载次数: 2

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代码:

加密的函数(其中KEY为 WABJTAM):
public string Encrypt(string pToEncrypt, string sKey)
{
    DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
    byte[] bytes = Encoding.Default.GetBytes(pToEncrypt);
    provider.Key = Encoding.ASCII.GetBytes(sKey);
    provider.IV = Encoding.ASCII.GetBytes(sKey);
    MemoryStream stream = new MemoryStream();
    CryptoStream stream2 = new CryptoStream(stream, provider.CreateEncryptor(), CryptoStreamMode.Write);
    stream2.Write(bytes, 0, bytes.Length);
    stream2.FlushFinalBlock();
    StringBuilder builder = new StringBuilder();
    foreach (byte num in stream.ToArray())
    {
        builder.AppendFormat("{0:X2}", num);
    }
    builder.ToString();
    return builder.ToString();
}
  
解密的函数(其中KEY为 WABJTAM):
public string Decrypt(string pToDecrypt, string sKey)
{
    DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
    byte[] buffer = new byte[pToDecrypt.Length / 2];
    for (int i = 0; i < (pToDecrypt.Length / 2); i++)
    {
        int num2 = Convert.ToInt32(pToDecrypt.Substring(i * 2, 2), 0x10);
        buffer[i] = (byte) num2;
    }
    provider.Key = Encoding.ASCII.GetBytes(sKey);
    provider.IV = Encoding.ASCII.GetBytes(sKey);
    MemoryStream stream = new MemoryStream();
    CryptoStream stream2 = new CryptoStream(stream, provider.CreateDecryptor(), CryptoStreamMode.Write);
    stream2.Write(buffer, 0, buffer.Length);
    stream2.FlushFinalBlock();
    StringBuilder builder = new StringBuilder();
    return Encoding.Default.GetString(stream.ToArray());
}