Nugrahaeni, Ratna, R. Rumani M., R. Rumani M., AND Nasution, Surya. " IMPLEMENTATION OF CRYPTOGRAPHY AND STEGANOGRAPHY FOR TEXT ON COVER IMAGE USING AES AND F5 ALGORITHM" TEKTRIKA - Jurnal Penelitian dan Pengembangan Telekomunikasi, Kendali, Komputer, Elektrik, dan Elektronika [Online], Volume 1 Number 1 (21 September 2016)