java.lang.RuntimeException：无法使用FingerPrint初始化密码

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我正在使用指纹sdk,它总是崩溃.

java.lang.RuntimeException: Failed to init Cipher                                                                                               
at com.example.ammar.fingerbyitself.MainActivity.initCipher(MainActivity.java:160)
at com.example.ammar.fingerbyitself.MainActivity.access$000(MainActivity.java:55)
at com.example.ammar.fingerbyitself.MainActivity$1.onClick(MainActivity.java:109)
at android.view.View.performClick(View.java:5697)
at android.widget.TextView.performClick(TextView.java:10814)
at android.view.View$PerformClick.run(View.java:22526)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7229)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: java.security.InvalidKeyException: Only SecretKey is supported
at com.android.org.conscrypt.OpenSSLCipher.checkAndSetEncodedKey(OpenSSLCipher.java:435)
at com.android.org.conscrypt.OpenSSLCipher.engineInit(OpenSSLCipher.java:260)
at javax.crypto.Cipher.tryTransformWithProvider(Cipher.java:612)
at javax.crypto.Cipher.tryCombinations(Cipher.java:532)
at javax.crypto.Cipher.getSpi(Cipher.java:437)
at javax.crypto.Cipher.init(Cipher.java:815)
at javax.crypto.Cipher.init(Cipher.java:774)
at com.example.ammar.fingerbyitself.MainActivity.initCipher(MainActivity.java:153)
at com.example.ammar.fingerbyitself.MainActivity.access$000(MainActivity.java:55)?
at com.example.ammar.fingerbyitself.MainActivity$1.onClick(MainActivity.java:109)?
at android.view.View.performClick(View.java:5697)?
at android.widget.TextView.performClick(TextView.java:10814)?
at android.view.View$PerformClick.run(View.java:22526)?
at android.os.Handler.handleCallback(Handler.java:739)?
at android.os.Handler.dispatchMessage(Handler.java:95)?
at android.os.Looper.loop(Looper.java:158)?
at android.app.ActivityThread.main(ActivityThread.java:7229)?
at java.lang.reflect.Method.invoke(Native Method)?

当我打电话给CIPHERinit()

private boolean initCipher() {
        try {
//            KeyStore mKeyStore = KeyStore.getInstance("AndroidKeyStore");
            mKeyStore.load(null);
            SecretKey key = (SecretKey) mKeyStore.getKey(KEY_NAME, null);
            mCipher.init(Cipher.ENCRYPT_MODE, key);
            return true;
        } catch (KeyPermanentlyInvalidatedException e) {
            return false;
        } catch (KeyStoreException | CertificateException | UnrecoverableKeyException | IOException
                | NoSuchAlgorithmException | InvalidKeyException e) {

            throw new RuntimeException("Failed to init Cipher", e);
        }
    }

它崩溃的原因尚不清楚,即使是从GitHub下载的相同代码也是如此.

解决方法:

在FingerPrintDialog示例中,有一个生成密钥的createKey方法.调用createKey后,只能调用initCipher

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