The govt uses red/black switches and KG-n, KIV7hs, KIV19,(boxes) and KOV9 and more PCMIA cards to protect themselves. Semiconductor firms useto make DES chips. Boeing made an MLS server. Isn't Crypto supposed to be incorporated into firmware of Routers? Yes, bribery of network managers ( personnel security and trust ) is a big concern. 576-bit Group Keys / Key Encrypting Keys interest me. Thank you. Best wishes.