I've noticed that each time the app has reached EncryptedSharedPreferences for the very first time, you get warning logs as such:

AndroidKeysetManager: keyset not found, will generate a new one
java.io.FileNotFoundException: can't read keyset; the pref value __androidx_security_crypto_encrypted_prefs_value_keyset__ does not exist
at com.google.crypto.tink.integration.android.SharedPrefKeysetReader.readPref(SharedPrefKeysetReader.java:71)
at com.google.crypto.tink.integration.android.SharedPrefKeysetReader.readEncrypted(SharedPrefKeysetReader.java:89)
at com.google.crypto.tink.KeysetHandle.read(KeysetHandle.java:105)
at com.google.crypto.tink.integration.android.AndroidKeysetManager$Builder.read(AndroidKeysetManager.java:311)
at com.google.crypto.tink.integration.android.AndroidKeysetManager$Builder.readOrGenerateNewKeyset(AndroidKeysetManager.java:287)
at com.google.crypto.tink.integration.android.AndroidKeysetManager$Builder.build(AndroidKeysetManager.java:238)
at androidx.security.crypto.EncryptedSharedPreferences.create(EncryptedSharedPreferences.java:160)
at androidx.security.crypto.EncryptedSharedPreferences.create(EncryptedSharedPreferences.java:120)

Please avoid this.
It has no way for us to handle it. It isn't something we can do about it.

See attached file to understand how I get the instance. Basically it's:

@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
@WorkerThread
private fun getSecuredSharedPreferences(context: Context, fileName: String): SharedPreferences {
val masterKey = MasterKey.Builder(context, MasterKey.DEFAULT_MASTER_KEY_ALIAS).setKeyScheme(MasterKey.KeyScheme.AES256_GCM).build()
return EncryptedSharedPreferences.create(context, fileName, masterKey,
EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
)
}

Issue 185219606

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