802.11i CCM (CTR+CBC) AES Core for WiFi WLAN

Overview

Implementation of the new WLAN security standard 802.11i requires the NIST standard AES cipher in CTR and CBC modes (a.k.a. CCM) for encryption and message authentication. The WPA2 AES core is tuned for 802.11i applications and as such requires much smaller gate count than a full implementation. The core contains the base AES core AES1 and is available for immediate licensing.

The design is fully synchronous and available in both source and netlist form.

Key Features

8,900 ASIC gates at 802.11a/g OFDM data speeds
Completely self-contained: does not require external memory
Includes encryption, decryption, key expansion and data interface
Support for Counter Mode Encryption (CTR) operation and CCM extensions (Counter Mode with CBC MAC, AES0CTR per NIST SP800-38C)
Automatic generation of key context from keydata
Flow-through design
Test bench provided
Deliverables include test benches

Benefits

Flow-through design allowed to produce an extremely compact core - full 802.11i support in less than ASIC 9K gates.

Block Diagram

Applications

WiFi 802.11i CCMP (CTR+CBC AES modes)
WPA AES and WPA2

Deliverables

HDL Source Licenses:

Synthesizable Verilog RTL source code
Testbench (self-checking)
Vectors for testbenches
Expected results
Simulation script
Synthesis script
User Documentation

Netlist License also available

Technical Specifications

Foundry, Node

TSMC

Maturity

Released

Availability

Now