security - Where to store user credentials when using fingerprint authentication in Android -


as title suggests, i'm making app allows user login using fingerprint authentication. problem i'm having store credentials submit?

the flow -> user logs in first time credentials -> enable fingerprint auth , store these credentials -> validate fingerprint access stored credentials.

i thought of using sharedpreferences if device rooted these accessible.

so safest , secure place store these credentials avoid them being accessed outside of app?

edit:

i'm using wrapper handle fingerprint authentication
https://android-arsenal.com/details/1/4493


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