public string AESEncrypt(string plainStr, bool returnNull)
{
string encrypt = AESEncrypt(plainStr);
return returnNull ? encrypt : (encrypt == null ? String.Empty : encrypt);
}
/// <summary>
/// AES加密
/// </summary>
/// <param name="plainStr">明文字符串</param>
/// <returns>密文</returns>
public string AESEncrypt(string plainStr)
{
byte[] bKey = Encoding.UTF8.GetBytes(Key);
byte[] bIV = Encoding.UTF8.GetBytes(IV);
byte[] byteArray = Encoding.UTF8.GetBytes(plainStr);
string encrypt = null;
Rijndael aes = Rijndael.Create();
try
{
using (MemoryStream mStream = new MemoryStream())
{
using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateEncryptor(bKey, bIV), CryptoStreamMode.Write))
{
cStream.Write(byteArray, 0, byteArray.Length);
cStream.FlushFinalBlock();
encrypt = Convert.ToBase64String(mStream.ToArray());
}
}
}
catch { }
aes.Clear();
return encrypt;
}
/// <summary>
/// AES解密
/// </summary>
/// <param name="encryptStr">密文字符串</param>
/// <param name="returnNull">解密失败时是否返回 null，false 返回 String.Empty</param>
/// <returns>明文</returns>
public string AESDecrypt(string encryptStr, bool returnNull)
{
string decrypt = AESDecrypt(encryptStr);
return returnNull ? decrypt : (decrypt == null ? String.Empty : decrypt);
}
/// <summary>
/// AES解密
/// </summary>
/// <param name="encryptStr">密文字符串</param>
/// <returns>明文</returns>
public string AESDecrypt(string encryptStr)
{
byte[] bKey = Encoding.UTF8.GetBytes(Key);
byte[] bIV = Encoding.UTF8.GetBytes(IV);
byte[] byteArray = Convert.FromBase64String(encryptStr);
string decrypt = null;
Rijndael aes = Rijndael.Create();
try
{
using (MemoryStream mStream = new MemoryStream())
{
using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateDecryptor(bKey, bIV), CryptoStreamMode.Write))
{
cStream.Write(byteArray, 0, byteArray.Length);
cStream.FlushFinalBlock();
decrypt = Encoding.UTF8.GetString(mStream.ToArray());
}
}
}
catch { }
aes.Clear();
return decrypt;
}
#endregion
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