CODEWITHSUNDEEP
androidsecurityencryption
crysxd
crysxd

Reputation: 3490

Encrypting app's local files

I'm currently writing a banking app. A lot of information is cached on the device in order to access it without a delay. This information include sensible data like information about a bank account (e.g. holder name, bank name, bank account number or the current balance, but no transaction data). These informations are stored in a file generated by Context#openFileOutput(String, int) using Context#MODE_PRIVATE. I would like to further protect this information by encrypting it.

My question is: What would be a appropriate key for the symmetrical encryption? I thought about using the PIN which is needed to access the app, but then I could not implement the fingerprint reader because I do not get the PIN from it.

Thanks in advance!

Upvotes: 0

Views: 75

Answers (1)

Zeyad Gasser
Zeyad Gasser

Reputation: 1546

Check out facebook's conceal lib.

https://facebook.github.io/conceal/

Upvotes: 1

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