7PtvajzN

1javax.crypto.BadPaddingException
2 at android.security.keystore.AndroidKeyStoreCipherSpiBase.engineDoFinal(AndroidKeyStoreCipherSpiBase.java:482)
3 at javax.crypto.Cipher.doFinal(Cipher.java:1502)
4 at nl.appsint.illuminati.component.authentication.FingerprintEncryption.encryptOrDecrypt(FingerprintEncryption.java:137)
5 at nl.appsint.illuminati.component.authentication.FingerprintDialogFragment.onAuthenticated(FingerprintDialogFragment.java:215)
6 at nl.appsint.illuminati.component.authentication.FingerprintScanner.onAuthenticationSucceeded(FingerprintScanner.java:74)
7 at android.hardware.fingerprint.FingerprintManager$MyHandler.sendAuthenticatedSucceeded(FingerprintManager.java:1108)
8 at android.hardware.fingerprint.FingerprintManager$MyHandler.handleMessage(FingerprintManager.java:1052)
9 at android.os.Handler.dispatchMessage(Handler.java:102)
10 at android.os.Looper.loop(Looper.java:158)
11 at android.app.ActivityThread.main(ActivityThread.java:7229)
12 at java.lang.reflect.Method.invoke(Native Method)
13 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
14 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
15
16Caused by: android.security.KeyStoreException: Invalid argument
17         at android.security.KeyStore.getKeyStoreException(KeyStore.java:940)
18         at android.security.keystore.KeyStoreCryptoOperationChunkedStreamer.doFinal(KeyStoreCryptoOperationChunkedStreamer.java:224)
19         at android.security.keystore.AndroidKeyStoreCipherSpiBase.engineDoFinal(AndroidKeyStoreCipherSpiBase.java:473)
20        ... 12 more
21	
22private void initializeKeystore() {
23
24    try {
25        mKeyStore = KeyStore.getInstance("AndroidKeyStore");
26    } catch (KeyStoreException e) {
27        mKeyStore = null;
28    }
29
30    try {
31        mKeyGenerator = KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_AES, KEY_STORE_NAME);
32    } catch (NoSuchAlgorithmException | NoSuchProviderException e) {
33        mKeyGenerator = null;
34    }
35}
36	
37private void createKey() {
38    if (mKeyGenerator != null) {
39        try {
40            mKeyStore.load(null);
41
42            KeyGenParameterSpec.Builder builder = new KeyGenParameterSpec.Builder(KEY_NAME,
43                    KeyProperties.PURPOSE_ENCRYPT | KeyProperties.PURPOSE_DECRYPT)
44                    .setBlockModes(KeyProperties.BLOCK_MODE_CBC)
45                    .setUserAuthenticationRequired(true)
46                    .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_PKCS7);
47
48            mKeyGenerator.init(builder.build());
49            mKeyGenerator.generateKey();
50        } catch (NoSuchAlgorithmException | InvalidAlgorithmParameterException |
51                CertificateException | IOException e) {
52            mKeyGenerator = null;
53        }
54    }
55}
56	
57private void createCipher() {
58    try {
59        mCipher = Cipher.getInstance(KeyProperties.KEY_ALGORITHM_AES + "/"
60                + KeyProperties.BLOCK_MODE_CBC + "/"
61                + KeyProperties.ENCRYPTION_PADDING_PKCS7);
62    } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
63        mCipher = null;
64    }
65}
66	
67@Nullable Cipher getCipher(@NonNull final FingerprintStore ivStore) {
68    if (mKeyStore != null && mKeyGenerator != null && mCipher != null) {
69        try {
70            mKeyStore.load(null);
71            SecretKey key = (SecretKey)mKeyStore.getKey(KEY_NAME, null);
72
73            switch (mEncryptionMode) {
74                case MODE_ENCRYPT:
75                    mCipher.init(Cipher.ENCRYPT_MODE, key);
76                    ivStore.writeIv(mCipher.getParameters().getParameterSpec(IvParameterSpec.class).getIV());
77                    break;
78                case MODE_DECRYPT:
79                    byte[] iv = ivStore.readIv();
80                    mCipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(iv));
81                    break;
82            }
83            return mCipher;
84        } catch (KeyStoreException | CertificateException | UnrecoverableKeyException | IOException
85                | NoSuchAlgorithmException | InvalidKeyException | InvalidAlgorithmParameterException
86                | InvalidParameterSpecException | NullPointerException e) {
87            return null;
88        }
89    }
90
91    return null;
92}
93	
94@Nullable byte[] encryptOrDecrypt(@NonNull Cipher cipher, @NonNull byte[] subject) {
95    try {
96        return cipher.doFinal(subject);
97    } catch (BadPaddingException | IllegalBlockSizeException e) {
98        e.printStackTrace();
99        return null;
100    }
101}