public byte[] Decrypt(byte[] encryptedBuffer, AESKey aesKey)
{
try
{
using (var decryptedStream = new MemoryStream())
{
using (var aesAlg = new AesCryptoServiceProvider())
{
aesAlg.Key = aesKey.Key;
aesAlg.IV = aesKey.IV;
ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
using (var msDecrypt = new MemoryStream(encryptedBuffer))
using (var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
csDecrypt.CopyTo(decryptedStream);
return(decryptedStream.ToArray());
}
}
}
}
catch (System.Exception e)
{
Debug.WriteLine($"AES decrypt errer: {e.Message}");
return(default(byte[]));
}
}
public byte[] Encrypt(byte[] buffer, AESKey aesKey)
{
try
{
using (var aesAlgoritm = new AesCryptoServiceProvider())
{
aesAlgoritm.Key = aesKey.Key;
aesAlgoritm.IV = aesKey.IV;
ICryptoTransform encryptor = aesAlgoritm.CreateEncryptor(aesAlgoritm.Key, aesAlgoritm.IV);
using (var encryptedMemoryStream = new MemoryStream())
using (var sourceStream = new MemoryStream(buffer))
{
using (var cryptoStream = new CryptoStream(encryptedMemoryStream, encryptor, CryptoStreamMode.Write))
sourceStream.CopyTo(cryptoStream);
return(encryptedMemoryStream.ToArray());
}
}
}
catch (System.Exception e)
{
Debug.WriteLine($"AES encrypt error: {e.Message}");
return(default(byte[]));
}
}