GIGABIT ETHERNET PASSIVE OPTICAL NETWORK CAPABLE OF STABLY TRANSMITTING DATA AND DATA ENCRYPTION METHOD USING GIGABIT ETHERNET PASSIVE OPTICAL NETWORK EMPLOYING AES SECRET KEY

摘要

PURPOSE: A gigabit ethernet passive optical network capable of stably transmitting data and a data encryption method using the gigabit ethernet passive optical network are provided to increase encryption efficiency by using an AES(Advanced Encryption Standard) secret key. CONSTITUTION: A GE-PON(Gigabit Ethernet Passive Optical Network) is comprised of an OLT(Optical Line Terminal)(100) for setting a channel and transmitting data through the channel and an ONT(Optical Network Terminal)(400). The OLT comprises a GE-PON OLT MAC(Media Access Control) module(120), a GMII(Gigabit Media Independent Interface) module(130), an OLT key managing unit(200), and a data encryption unit(180). The GE-PON OLT MAC module supports a CSMA/CD(Carrier Sense Multiple Access/Collision Detect) operation for data inputted from a second layer out of seven OSI(Open Systems Interconnection communications) layers. The GMII module provides an interface between a physical layer and the second layer. The OLT key managing unit creates an AES secret key and then encrypts the created AES secret key. The data encryption unit encrypts a plain text using the AES secret key. The ONT comprises a GE-PON ONT MAC module(420), a GMII module(430), an ONT key managing unit(500), and a data decoder(480). The GE-PON ONT MAC module and the GMII module(430) perform operations similar to those of the GE-PON OLT MAC module and the GMII module in the OLT.