C# - AES加密+解密

/// AES加密
/// </summary>
/// <param name="inputdata">输入的数据</param>
/// <param name="iv">向量128位</param>
/// <param name="strKey">加密密钥</param>
/// <returns></returns>
public static byte[] AESEncrypt(byte[] inputdata, byte[] iv, string strKey)
{
//分组加密算法
SymmetricAlgorithm des = Rijndael.Create();
byte[] inputByteArray = inputdata;//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(strKey.Substring(0, 32));
des.IV = iv;
using (MemoryStream ms = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
byte[] cipherBytes = ms.ToArray();//得到加密后的字节数组
cs.Close();
ms.Close();
return cipherBytes;
}
}
}

/// <summary>
/// AES解密
/// </summary>
/// <param name="inputdata">输入的数据</param>
/// <param name="iv">向量128</param>
/// <param name="strKey">key</param>
/// <returns></returns>
public static byte[] AESDecrypt(byte[] inputdata, byte[] iv, string strKey)
{
SymmetricAlgorithm des = Rijndael.Create();
des.Key = Encoding.UTF8.GetBytes(strKey.Substring(0, 32));
des.IV = iv;
byte[] decryptBytes = new byte[inputdata.Length];
using (MemoryStream ms = new MemoryStream(inputdata))
{
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Read))
{
cs.Read(decryptBytes, 0, decryptBytes.Length);
cs.Close();
ms.Close();
}
}
return decryptBytes;
}