CODEWITHSUNDEEP
androiddatabasesqliteencryption
Aritra Roy
Aritra Roy

Reputation: 15615

Encrypt exisiting database in Android

I have an app already published in Play Store. Now, I want to encrypt the database of the app.

I know about SQLCipher for Android which can do this for me. But the problem is that my app is already used by a lot of users and they have lots of unencrypted data inside it.

Now, how can I use SQLCipher with an existing unencrypted database? So that all my previous data gets encrypted without any problem and new data gets going as it should.

Upvotes: 0

Views: 720

Answers (1)

Alex
Alex

Reputation: 21766

You can encrypt a plaintext database using SqlCipher using the following commands or alternatively you can find Java example code on GitHub.

$ ./sqlcipher plaintext.db
sqlite> ATTACH DATABASE 'encrypted.db' AS encrypted KEY 'testkey';
sqlite> SELECT sqlcipher_export('encrypted');
sqlite> DETACH DATABASE encrypted;

You can encrypt the user's database as part of the installation of your new app by overriding the onUpgrade method in your installer.

Upvotes: 0

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