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1. #Gett shared preferences from preference manager android
2. #Gett shared preferences from preference manager code

Keysets contain cryptographic keys that are used to encrypt and decrypt the shared preference data. There is one keyset for shared preference keys and another for values. We can see that our key-value data has been encrypted and that two keysets were stored, as well. Using the normal SharedPreferences, this is what we have: Īs we can see, both the key and value are stored unencrypted. If you’d like to view the contents of your own shared preferences file, StackOverflow has you covered. How do we know that our data is being encrypted? Let’s take a look at the contents of our shared preferences file. SharedPreferences.getString("some_key", "some_default_value") // -> "some_data" Double-checking our work Val sharedPreferences = EncryptedSharedPreferences.create( Altogether, we have the following: val keyGenParameterSpec = MasterKeys.AES256_GCM_SPEC Once we’ve created our EncryptedSharedPreferences instance, we can use it just like SharedPreferences to store and read values. They are the only options provided by the library. The final two arguments are the schemes with which keys and values are encrypted. We provide the name for the shared preferences file, the masterKeyAlias we created earlier, and a Context. val sharedPreferences = EncryptedSharedPreferences.create(Į256_SIV,Į256_GCM Unlike SharedPreferences, which we can get from Context#getSharedPreferences or Activity#getPreferences, we’ll need to create our own instance of EncryptedSharedPreferences. While it’s recommended to use this specification, you can also provide your own KeyGenParameterSpec if you need more control over how the key is generated.įinally, we just need an instance of EncryptedSharedPreferences, which is a wrapper around SharedPreferences and handles all of the encryption for us. We’re given a default key generation specification, AES256_GCM_SPEC, to use for creating the master key. Val masterKeyAlias = MasterKeys.getOrCreate(keyGenParameterSpec) val keyGenParameterSpec = MasterKeys.AES256_GCM_SPEC

#Gett shared preferences from preference manager code

The following code can be placed where you plan to create your EncryptedSharedPreferences instance.

The security library provides us with an easy way to do this.

#Gett shared preferences from preference manager android

With the dependency added, the next step is to create an encryption master key and store it in the Android KeyStore. This means that while the functionality is stable, parts of the API may be changed or removed in future versions. It’s important to note that this library is currently in the alpha phase. Be sure to check the library’s releases page to see if a newer version is available. This is the latest version as of this writing. implementation "curity:security-crypto:1.0.0-alpha02" To get started with the AndroidX Security library, add the following dependency to your module-level adle file.

Thankfully, the AndroidX Security library was recently added and makes storing encrypted shared preferences data simple and easy for apps with a min-sdk of 23+. Another option is to use a third-party library, which means that we need to spend time finding and vetting one. Unfortunately, that can be pretty complicated and involve a lot of setup. One option is to write our own encryption wrapper around SharedPreferences using the Android KeyStore. We should encrypt sensitive data to keep it from prying eyes. When working with sensitive data, however, it’s important to consider that SharedPreferences stores data as plain text. The Android framework provides us with SharedPreferences, which is a great way to store a small amount of key-value data. Encrypting Shared Preferences with the AndroidX Security Library