我的应用程序在使用 Android 的密钥库在通过指纹验证后加密一些数据。这似乎在大多数设备上都可以正常工作,但是我收到了一些来自 OnePlus2 用户的错误报告,其中包括以下异常
android.security.KeyStoreException: Signature/MAC verification failed
at android.security.KeyStore.getKeyStoreException(KeyStore.java:632)
at android.security.keystore.KeyStoreCryptoOperationChunkedStreamer.update(KeyStoreCryptoOperationChunkedStreamer.java:132)
at android.security.keystore.KeyStoreCryptoOperationChunkedStreamer.doFinal(KeyStoreCryptoOperationChunkedStreamer.java:217)
at android.security.keystore.AndroidKeyStoreCipherSpiBase.engineDoFinal(AndroidKeyStoreCipherSpiBase.java:473)
at javax.crypto.Cipher.doFinal(Cipher.java:1502)
我的代码主要是这样实现的(使用 Mono for Android 编写):
Cipher _cipher = Cipher.GetInstance(KeyProperties.KeyAlgorithmAes + "/"
+ KeyProperties.BlockModeCbc + "/"
+ KeyProperties.EncryptionPaddingPkcs7);
KeyStore _keystore = KeyStore.GetInstance("AndroidKeyStore");
FingerprintManager _fingerprintManager = (FingerprintManager) Context.GetSystemService(Context.FingerprintService);
_keystore.Load(null);
var key = _keystore.GetKey(_keyId, null);
_cipher.Init(CipherMode.EncryptMode, key);
_cryptoObject = new FingerprintManager.CryptoObject(_cipher);
_fingerprintManager.Authenticate(_cryptoObject, _cancellationSignal, 0 /* flags */, this, null);
//OnAuthSucceeded:
var mySecret = _cipher.DoFinal(System.Text.Encoding.UTF8.GetBytes(textToEncrypt));
代码有什么问题吗?异常信息是什么意思?