Implementation of the new LAN security standard IEEE 802.1ae (MACsec) requires the NIST standard AES cipher in the GCM mode for encryption and message authentication, as well as header parsing and formatting operations on the transmitted and received packets. The MSP1-PON core is tuned for Passive Optics Networks (PON) IEEE 802.1ae applications at the data rates of 10-100 Gbps.