private static bool CheckFileEntry(TamperDetectionFileEntry entry)
{
string[] files = Directory.GetFiles(entry.rootSearchPath, entry.filename, entry.mustBeExact ? SearchOption.TopDirectoryOnly : SearchOption.AllDirectories);
if (files.Length == 0)
{
Debug.LogError(string.Format("File ({0}) not found in folder ({1})", entry.filename, entry.rootSearchPath));
return(false);
}
//Debug.Log(string.Format("File ({0}) found in folder ({1})", entry.filename, entry.rootSearchPath));
byte[] hash = _HashProvider.ComputeHash(File.OpenRead(files[0]));
bool result = MixCastCryptoUtils.BytesEqual(hash, entry.hash);
if (!result)
{
#if UNITY_EDITOR
Debug.LogError(string.Format("hash mismatch: {0}, expected {1} got {2}",
entry.filename, Convert.ToBase64String(entry.hash), Convert.ToBase64String(hash)));
#else
Debug.LogError("file change detected: " + files[0]);
#endif
}
return(result);
}
private static bool IsSameComputer(MixCastData.SecureData data, MachineId machineId)
{
if (machineId == null || data == null || string.IsNullOrEmpty(data.machineId))
{
return(false);
}
return(MixCastCryptoUtils.BytesEqual(
machineId.ComputeHash(),
Convert.FromBase64String(data.machineId)));
}
public static bool KeysAreCompatible(byte[] publicKey, byte[] privateKey)
{
if (publicKey == null || privateKey == null)
{
return(false);
}
MixCastEncrypter encrypter = new MixCastEncrypter(publicKey);
MixCastDecrypter decrypter = new MixCastDecrypter(privateKey);
byte[] testData = { 3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9 };
byte[] encrypted = encrypter.Encrypt(testData);
byte[] decrypted = decrypter.Decrypt(encrypted);
if (!MixCastCryptoUtils.BytesEqual(testData, decrypted))
{
return(false);
}
return(true);
}
public byte[] Decrypt(byte[] data)
{
return(MixCastCryptoUtils.ProcessCipher(data, _Cipher));
}