无法在Android上创建KeyPair

时间：2018-03-20 02:01:58

标签： java android key-pair

我正在玩android中的键，我正在尝试生成公钥/私钥加密密钥对。不幸的是，我一直收到'KeyStoreException：无效的密钥blob'。

我按照这里的说明操作：

https://developer.android.com/training/articles/keystore.html

特别是标题为“生成新私钥”的部分，我觉得我的代码几乎是逐字复制的：

try {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance(KeyProperties.KEY_ALGORITHM_EC, "AndroidKeyStore");
    keyGen.initialize(
        new KeyGenParameterSpec.Builder(
            keyName,
            KeyProperties.PURPOSE_SIGN | KeyProperties.PURPOSE_VERIFY)
           .setDigests(KeyProperties.DIGEST_SHA256, KeyProperties.DIGEST_SHA512).build()
    );

    KeyPair pair = keyGen.generateKeyPair();

} catch (NoSuchProviderException e) {
    e.printStackTrace();
} catch (InvalidAlgorithmParameterException e) {
    e.printStackTrace();
}

keyName的值来自用户输入，但我也尝试使用值"abc"。

我得到的错误是：

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.calebg.claimcreator, PID: 17389
        java.lang.IllegalStateException: Could not execute method for android:onClick
            at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
            at android.view.View.performClick(View.java:6579)
            at android.view.View.performClickInternal(View.java:6556)
            at android.view.View.access$3100(View.java:777)
            at android.view.View$PerformClick.run(View.java:25660)
            at android.os.Handler.handleCallback(Handler.java:819)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:164)
            at android.app.ActivityThread.main(ActivityThread.java:6656)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
        Caused by: java.lang.reflect.InvocationTargetException
            at java.lang.reflect.Method.invoke(Native Method)
            at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
            at android.view.View.performClick(View.java:6579) 
            at android.view.View.performClickInternal(View.java:6556) 
            at android.view.View.access$3100(View.java:777) 
            at android.view.View$PerformClick.run(View.java:25660) 
            at android.os.Handler.handleCallback(Handler.java:819) 
            at android.os.Handler.dispatchMessage(Handler.java:99) 
            at android.os.Looper.loop(Looper.java:164) 
            at android.app.ActivityThread.main(ActivityThread.java:6656) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823) 
        Caused by: java.security.ProviderException: Failed to load generated key pair from keystore
            at android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.loadKeystoreKeyPair(AndroidKeyStoreKeyPairGeneratorSpi.java:530)
            at android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.generateKeyPair(AndroidKeyStoreKeyPairGeneratorSpi.java:478)
            at java.security.KeyPairGenerator$Delegate.generateKeyPair(KeyPairGenerator.java:727)
            at com.example.calebg.claimcreator.CreateKeyActivity.createKey(CreateKeyActivity.java:76)
            at java.lang.reflect.Method.invoke(Native Method) 
            at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
            at android.view.View.performClick(View.java:6579) 
            at android.view.View.performClickInternal(View.java:6556) 
            at android.view.View.access$3100(View.java:777) 
            at android.view.View$PerformClick.run(View.java:25660) 
            at android.os.Handler.handleCallback(Handler.java:819) 
            at android.os.Handler.dispatchMessage(Handler.java:99) 
            at android.os.Looper.loop(Looper.java:164) 
            at android.app.ActivityThread.main(ActivityThread.java:6656) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823) 
        Caused by: java.security.UnrecoverableKeyException: Failed to obtain X.509 form of public key
            at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStorePublicKeyFromKeystore(AndroidKeyStoreProvider.java:239)
            at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStoreKeyPairFromKeystore(AndroidKeyStoreProvider.java:278)
            at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStoreKeyPairFromKeystore(AndroidKeyStoreProvider.java:289)
            at android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.loadKeystoreKeyPair(AndroidKeyStoreKeyPairGeneratorSpi.java:521)
            at android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.generateKeyPair(AndroidKeyStoreKeyPairGeneratorSpi.java:478) 
            at java.security.KeyPairGenerator$Delegate.generateKeyPair(KeyPairGenerator.java:727) 
            at com.example.calebg.claimcreator.CreateKeyActivity.createKey(CreateKeyActivity.java:76) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
            at android.view.View.performClick(View.java:6579) 
            at android.view.View.performClickInternal(View.java:6556) 
            at android.view.View.access$3100(View.java:777) 
            at android.view.View$PerformClick.run(View.java:25660) 
            at android.os.Handler.handleCallback(Handler.java:819) 
            at android.os.Handler.dispatchMessage(Handler.java:99) 
            at android.os.Looper.loop(Looper.java:164) 
            at android.app.ActivityThread.main(ActivityThread.java:6656) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823) 
        Caused by: android.security.KeyStoreException: Invalid key blob
            at android.security.KeyStore.getKeyStoreException(KeyStore.java:823)
            at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStorePublicKeyFromKeystore(AndroidKeyStoreProvider.java:241)
            at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStoreKeyPairFromKeystore(AndroidKeyStoreProvider.java:278) 
            at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStoreKeyPairFromKeystore(AndroidKeyStoreProvider.java:289) 
            at android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.loadKeystoreKeyPair(AndroidKeyStoreKeyPairGeneratorSpi.java:521) 
            at android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.generateKeyPair(AndroidKeyStoreKeyPairGeneratorSpi.java:478) 
            at java.security.KeyPairGenerator$Delegate.generateKeyPair(KeyPairGenerator.java:727) 
            at com.example.calebg.claimcreator.CreateKeyActivity.createKey(CreateKeyActivity.java:76) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
            at android.view.View.performClick(View.java:6579) 
            at android.view.View.performClickInternal(View.java:6556) 
            at android.view.View.access$3100(View.java:777) 
            at android.view.View$PerformClick.run(View.java:25660) 
            at android.os.Handler.handleCallback(Handler.java:819) 
            at android.os.Handler.dispatchMessage(Handler.java:99) 
            at android.os.Looper.loop(Looper.java:164) 
            at android.app.ActivityThread.main(ActivityThread.java:6656) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823) 

我正在使用Android Studio 3.0.1，minSdkVersion 23，targetSdkVersion 26，我正在“Nexus 6 API P”虚拟设备上进行测试。

我发现的唯一其他相关的stackoverflow问题（也是唯一的google结果）看起来很有帮助：

android.security.KeyStoreException: Invalid key blob

但是我不清楚如何将答案应用到我的情况中并且我不相信它是我的情况下的正确解决方案（当我刚刚初始化它时，如何锁定/取消初始化密钥库？如何捕获？一个例外并再次尝试解决这个问题？）。

任何人都可以确定我做错了吗？

3 个答案:

答案 0 :(得分：1)

尝试在Android-P上运行我的应用时出现同样的问题，我认为他们在密钥库See the preview上做了一些更改，我想知道你的物理设备是否在运行Android P？

答案 1 :(得分：0)

我在真实的设备上试过这个并且它有效。不知道为什么，但由于某种原因，Android模拟器无法根据Android文档创建密钥。

答案 2 :(得分：-1)

您可以尝试以下代码，它基于AES-128加密算法。

public void RandomKey(View view)
{

    int[] Keys = new int[16];
    String keyString ="";


    //reset the secret key into null
    Secret_Key="";
    SecretKey.setText(Secret_Key);

    try
    {
        KeyGenerator keyGen = KeyGenerator.getInstance("AES");
        keyGen.init(128); // 128 bit
        javax.crypto.SecretKey secretKey = keyGen.generateKey(); //generate secret key
        SKey= secretKey.getEncoded();
        // to display
        for (int i = 0; i < 16; i++)
        {

            Keys[i] = SKey[i] & 0x000000FF;//convert byte to integer
            keyString = Integer.toHexString(Keys[i]);

            if (keyString.length() < 2)
            {
                keyString="0"+keyString;
            }
            //Log.d("keys are"," "+i+keyString);
            Secret_Key = Secret_Key + " " + keyString;
        }

        SecretKey.setAllCaps(true);
        SecretKey.setText(Secret_Key);
    }

更完整的程序，您可以参考： https://github.com/aliakbarpa/AES-128_for_Android

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