package com.reactlibrary.securekeystore; // Helper function for storing keys to internal storage. import android.content.Context; import java.io.ByteArrayOutputStream; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; public final class Storage { public static void writeValues(Context context, String filename, byte[] bytes) throws IOException { FileOutputStream fos = context.openFileOutput(filename, Context.MODE_PRIVATE); fos.write(bytes); fos.close(); } public static byte[] readValues(Context context, String filename) throws IOException { FileInputStream fis = context.openFileInput(filename); ByteArrayOutputStream baos = new ByteArrayOutputStream(1024); byte[] buffer = new byte[1024]; int bytesRead = fis.read(buffer); while(bytesRead != -1) { baos.write(buffer, 0, bytesRead); bytesRead = fis.read(buffer); } return baos.toByteArray(); } public static void resetValues(Context context, String[] filenames) { for(String filename : filenames) { context.deleteFile(filename); } } }