C# winfrom中创建,读,写、加密ini文件【DES】

// 初始化DES加密的密钥和一个随机的、8比特的初始化向量(IV)
private byte[] key_8 = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef };
private byte[] IV_8 = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef };
/// <summary>
/// DES加密字符串
/// </summary>
/// <param name="encryptString">待加密的字符串</param>
/// <param name="rgbKey">加密密钥,要求为8位</param>
/// <param name="rgbIV">密钥向量</param>
/// <returns>加密成功返回加密后的字符串，失败返回源字符串</returns>
private string DES_Encrypt(string encryptString, byte[] rgbKey, byte[] rgbIV)
{
try
{
byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
}
catch
{
return encryptString;
}
}
/// <summary>
/// DES解密字符串
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <param name="rgbKey">解密密钥,要求为8位,和加密密钥相同</param>
/// <param name="rgbIV">密钥向量</param>
/// <returns>解密成功返回解密后的字符串，失败返源字符串</returns>
private string DES_Decrypt(string decryptString, byte[] rgbKey, byte[] rgbIV)
{
try
{
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Encoding.UTF8.GetString(mStream.ToArray());
}
catch
{
return decryptString;
}
}