小编jin*_*aud的帖子

在我们的应用程序中,我们一直遇到Android Keystore中的数据突然变得无法访问的问题.我们看到的具体例外情况如下:

java.security.UnrecoverableKeyException: Failed to obtain information about private key
 at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStorePublicKeyFromKeystore(AndroidKeyStoreProvider.java:223)
 at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStoreKeyPairFromKeystore(AndroidKeyStoreProvider.java:259)
 at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStorePrivateKeyFromKeystore(AndroidKeyStoreProvider.java:269)
 at android.security.keystore.AndroidKeyStoreSpi.engineGetKey(AndroidKeyStoreSpi.java:94)
 at java.security.KeyStoreSpi.engineGetEntry(KeyStoreSpi.java:474)
 at java.security.KeyStore.getEntry(KeyStore.java:1560)
 at <PACKAGE_NAME>.EncryptionInteractor.generateKeys(EncryptionInteractor.java:104)
 at <PACKAGE_NAME>.EncryptionInteractor.generateKeys(EncryptionInteractor.java:100)
 at <PACKAGE_NAME>.EncryptionInteractor.init(EncryptionInteractor.java:93)
 at <PACKAGE_NAME>.EncryptionInteractor.<init>(EncryptionInteractor.java:80)
 at <PACKAGE_NAME>.EncryptionInteractor.init(EncryptionInteractor.java:65)
 at <PACKAGE_NAME>.<APPLICATION_CLASS>.onCreate(APPLICATION_CLASS.java:17)
 at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1118)
 at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5791)
 at android.app.ActivityThread.-wrap1(Unknown Source:0)
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1661)
 at android.os.Handler.dispatchMessage(Handler.java:105)
 at android.os.Looper.loop(Looper.java:164)
 at android.app.ActivityThread.main(ActivityThread.java:6541)
 at java.lang.reflect.Method.invoke(Native Method)
 at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: android.security.KeyStoreException: Invalid key blob
 at android.security.KeyStore.getKeyStoreException(KeyStore.java:695)
 at android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStorePublicKeyFromKeystore(AndroidKeyStoreProvider.java:224)
  ... 21 more

我们无法想出一种可靠的方法来重现这个问题.有几篇文章提到了可能导致密钥库"忘记"密钥或被锁定的状态,例如此处.但是,据我所知,我们没有陷入任何这些边缘情况.在首次设置密钥后让设备静置一段时间后,似乎会发生这种情况.我们已经看到这种情况发生在多个仿真器和设备上,范围从21到26.此外,这些设备使用了滑动解锁或PIN.更改PIN或安全方法似乎不会导致此问题.同样,这个问题似乎是在设备未使用几天之后发生的.

我在这里和这里找到了另外两个SO 以及一个Google 问题.如果我理解正确,两者相关的答案似乎都依赖于调用者 …