Error after Fingerprint touched on Samsung phones: android.security.KeyStoreException: Key user not authenticated

Question

My app uses Android 6.0 Fingerprint API to protect AES key in the Android KeyStore. The stored key can be used only when user is authenticated by fingerprint sensor because

Answer 1

I also had this issue when using Samsung Galaxy S8 with android 8. For solve this problem I just remove key from keystore and generate new after that use new key for encrypt and decrypt data

try {
    keyStore.deleteEntry(KEY_ALIAS);
} catch (KeyStoreException e) {
    e.printStackTrace();
}