/// <summary>
/// AES解密
/// </summary>
/// <param name="decryptStr">解密字符串</param>
/// <param name="decryptKey">密钥</param>
/// <returns></returns>
public static string AESDecrypt(string decryptStr, string decryptKey)
{
if (string.IsNullOrWhiteSpace(decryptStr))
{
return(string.Empty);
}
decryptKey = StringHelper.SubString(decryptKey, 32);
decryptKey = decryptKey.PadRight(32, ' ');
byte[] cipherText = Convert.FromBase64String(decryptStr);
SymmetricAlgorithm des = Rijndael.Create();
des.Key = Encoding.UTF8.GetBytes(decryptKey);
des.IV = _aeskeys;
byte[] decryptBytes = new byte[cipherText.Length];
using (MemoryStream ms = new MemoryStream(cipherText))
{
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Read))
{
cs.Read(decryptBytes, 0, decryptBytes.Length);
cs.Close();
ms.Close();
}
}
return(Encoding.UTF8.GetString(decryptBytes).Replace("\0", ""));//将字符串后尾的'\0'去掉
}
/// <summary>
/// AES加密
/// </summary>
/// <param name="encryptStr">加密字符串</param>
/// <param name="encryptKey">密钥</param>
/// <returns></returns>
public static string AESEncrypt(string encryptStr, string encryptKey)
{
if (string.IsNullOrWhiteSpace(encryptStr))
{
return(string.Empty);
}
encryptKey = StringHelper.SubString(encryptKey, 32);
encryptKey = encryptKey.PadRight(32, ' ');
//分组加密算法
SymmetricAlgorithm des = Rijndael.Create();
byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptStr);//得到需要加密的字节数组
//设置密钥及密钥向量
des.Key = Encoding.UTF8.GetBytes(encryptKey);
des.IV = _aeskeys;
byte[] cipherBytes = null;
using (MemoryStream ms = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
cipherBytes = ms.ToArray();//得到加密后的字节数组
cs.Close();
ms.Close();
}
}
return(Convert.ToBase64String(cipherBytes));
}