java.lang.IllegalStateException inside KeymasterUtils.addUserAuthArgs

[Vojtas87]

Hello,

I received this crash report in my app (Android 7.0, MIX_2):

`java.lang.IllegalStateException
android.security.keystore.KeymasterUtils.addUserAuthArgs

java.lang.RuntimeException: Unable to resume activity {CustomPinActivity}: java.lang.RuntimeException: java.security.InvalidAlgorithmParameterException: java.lang.IllegalStateException: At least one fingerprint must be enrolled to create keys requiring user authentication for every use
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3514)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3554)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2795)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1527)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:203)
at android.app.ActivityThread.main(ActivityThread.java:6255)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1063)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:924)
Caused by: java.lang.RuntimeException: java.security.InvalidAlgorithmParameterException: java.lang.IllegalStateException: At least one fingerprint must be enrolled to create keys requiring user authentication for every use
at com.github.omadahealth.lollipin.lib.managers.FingerprintUiHelper.createKey(FingerprintUiHelper.java:277)
at com.github.omadahealth.lollipin.lib.managers.FingerprintUiHelper.initCipher(FingerprintUiHelper.java:241)
at com.github.omadahealth.lollipin.lib.managers.FingerprintUiHelper.startListening(FingerprintUiHelper.java:140)
at com.github.omadahealth.lollipin.lib.managers.AppLockActivity.initLayoutForFingerprint(AppLockActivity.java:151)
at com.github.omadahealth.lollipin.lib.managers.AppLockActivity.onResume(AppLockActivity.java:84)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1269)
at android.app.Activity.performResume(Activity.java:6791)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3485)
... 10 more
Caused by: java.security.InvalidAlgorithmParameterException: java.lang.IllegalStateException: At least one fingerprint must be enrolled to create keys requiring user authentication for every use
at android.security.keystore.AndroidKeyStoreKeyGeneratorSpi.engineInit(AndroidKeyStoreKeyGeneratorSpi.java:240)
at android.security.keystore.AndroidKeyStoreKeyGeneratorSpi$AES.engineInit(AndroidKeyStoreKeyGeneratorSpi.java:53)
at javax.crypto.KeyGenerator.init(KeyGenerator.java:487)
at javax.crypto.KeyGenerator.init(KeyGenerator.java:470)
at com.github.omadahealth.lollipin.lib.managers.FingerprintUiHelper.createKey(FingerprintUiHelper.java:266)
... 17 more
Caused by: java.lang.IllegalStateException: At least one fingerprint must be enrolled to create keys requiring user authentication for every use
at android.security.keystore.KeymasterUtils.addUserAuthArgs(KeymasterUtils.java:117)
at android.security.keystore.AndroidKeyStoreKeyGeneratorSpi.engineInit(AndroidKeyStoreKeyGeneratorSpi.java:234)
... 21 more`

Could you take a look at this, please?

Thank you in advance.