Generate MACsec Key MACsec Key Agreement (MKA) protocol Generate MACsec connectivity association key (CAK) Generate random key for GCM-AES-128 encryption - 128bit /usr/bin/hexdump -n 16 -e '4/4 "%08x" 1 "\n"' /dev/random Generate random key for GCM-AES-256 encryption - 256bit /usr/bin/hexdump -n 32 -e '8/4 "%08x" 1 "\n"' /dev/random Generate MACsec connectivity association name (CKN) - 256bit /usr/bin/hexdump -n 32 -e '8/4 "%08x" 1 "\n"' /dev/random