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mjwheatley / cordova-plugin-android-fingerprint-auth

A cordova plugin for fingerprint authentication using the hardware fingerprint scanner on devices running Android 6+
Apache License 2.0
168 stars 131 forks source link

New_Fingerprints_Enrolled issue :- Failed to init Cipher : invalidKeyException #9

Closed rakeshpalivela closed 8 years ago

rakeshpalivela commented 8 years ago

Hi,

Issue 1 : When I add new Finger Prints in my device, then I am getting the following exception.

Failed to init Cipher : invalidKeyException

If I changed my ClientID and Key then it was working fine...

So, can I know what it is doing after adding finger prints ....?

Issue 2 :

If I placed wrong finger, it allows up to five attempts after that I waited for 30 seconds and then I placed my finger but it is not doing any thing. It is again reactivating only after relaunch the popup.

Can you please help me in fixing these two issues.

mjwheatley commented 8 years ago

Issue 1: This is working as designed. It is a security feature. When a new fingerprint is added, it permanently invalidates the previous key. That way it cannot be used if someone hacked a new fingerprint on the device. I have publish v0.0.11 to create a new key after authenticating with the backup if their was a failure to initialize the cipher because of an InvalidKeyException. So if a new fingerprint is added, the user must validate using the backup before they can continue to use fingerprint validation.

Issue 2: I am unable to replicate this issue. If I try five times it sends me to the backup validation. I can cancel or validate and continue. Either way I have to wait 30 seconds and I am able to continue to validate with the correct finger or attempt another 5 times with an invalid finger. I was testing using an emulator Nexus 5 API 23 x86. Please check your Logcat to see if there are any messages related to the finger touch not working.

danicholls commented 5 years ago

How would you handle this if you wanted disableBackup to be true, then?