Kamil Kamiński

It's easy to reproduce this on AVD emulators. Problem is that `fingerprintManager.hasEnrolledFingerprints()` returns true, but calling `RealWhorlwind#prepareKeyStore()` throws an exception in lines ``` keyGenerator.initialize(new KeyGenParameterSpec.Builder(keyAlias, KeyProperties.PURPOSE_ENCRYPT | KeyProperties.PURPOSE_DECRYPT) // .setBlockModes(KeyProperties.BLOCK_MODE_ECB)...