Pink it Safe

A toolkit to secure your Android applications in a simple and effective way.

---

Installation • Safe Storage • Biometrics

---

Installation

dependencies {
    implementation 'dev.pinkroom:pinkitsafe:<latest_version>'
}

Safe Storage

The safe storage tool uses the EncryptedSharedPreferences under the wood to save your data in an encrypted file using key-value pairs.

To start using it create a SafeStorage instance:

val safeStorage = SafeStorage(context)

If you want the storage to be protected by user authentication, like biometrics, use:

val safeStorage = SafeStorage(context, authenticationRequired = true)

To save something on it:

safeStorage.save("secret-key", "Go away Mitnick!")

To get the value for a given key:

val secret = safeStorage.get<String>("secret-key")

Finally, to clear all the key-values stored so far:

safeStorage.clear()

Biometrics

If you protected your SafeStorage with user authentication, or if you simply want to control a flow in your App using biometrics, you can create an instance of Biometrics:

val biometrics = Biometrics(context)

Note: There are 3 ways to instantiate the Biometrics class. Using a Context, a Fragment or a FragmentActivity. If you pass a context, make sure your activity extends the AppCompatActivity or FragmentActivity.

Then, ask the user to authenticate:

biometrics.authenticate("Authenticate") {
    // User was authenticated with success
}

The Biometrics class is a simple wrapper of the BiometricPrompt provided in androidx. You can validate the other parameters received by the authenticate function in order to customise the prompt or handle errors.

License

Copyright 2023 Pink Room, Lda

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.